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Chen J, Xia Y, Ling Y, Liu X, Li S, Yin X, Zhang L, Liang M, Yan YM, Zheng Q, Chen W, Guo YJ, Yuan EH, Hu G, Zhou X, Wang L. Zn Single-Atom Catalysts Enable the Catalytic Transfer Hydrogenation of α ,β-Unsaturated Aldehydes. Nano Lett 2024; 24:5197-5205. [PMID: 38634879 DOI: 10.1021/acs.nanolett.4c00512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Highly active nonprecious-metal single-atom catalysts (SACs) toward catalytic transfer hydrogenation (CTH) of α,β-unsaturated aldehydes are of great significance but still are deficient. Herein, we report that Zn-N-C SACs containing Zn-N3 moieties can catalyze the conversion of cinnamaldehyde to cinnamyl alcohol with a conversion of 95.5% and selectivity of 95.4% under a mild temperature and atmospheric pressure, which is the first case of Zn-species-based heterogeneous catalysts for the CTH reaction. Isotopic labeling, in situ FT-IR spectroscopy, and DFT calculations indicate that reactants, coabsorbed at the Zn sites, proceed CTH via a "Meerwein-Ponndorf-Verley" mechanism. DFT calculations also reveal that the high activity over Zn-N3 moieties stems from the suitable adsorption energy and favorable reaction energy of the rate-determining step at the Zn active sites. Our findings demonstrate that Zn-N-C SACs hold extraordinary activity toward CTH reactions and thus provide a promising approach to explore the advanced SACs for high-value-added chemicals.
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Affiliation(s)
- Jiawen Chen
- State Key Laboratory of Chemical Resource Engineering, Innovation Centre for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Yongming Xia
- State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Yuxuan Ling
- State Key Laboratory of Chemical Resource Engineering, Innovation Centre for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Xuehui Liu
- State Key Laboratory of Chemical Resource Engineering, Innovation Centre for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Shuyuan Li
- State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Xiong Yin
- State Key Laboratory of Chemical Resource Engineering, Innovation Centre for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Lipeng Zhang
- State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Minghui Liang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190, People's Republic of China
| | - Yi-Ming Yan
- State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Qiang Zheng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190, People's Republic of China
| | - Wenxing Chen
- Energy and Catalysis Center, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Yan-Jun Guo
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190, People's Republic of China
| | - En-Hui Yuan
- School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an 710119, People's Republic of China
| | - Gaofei Hu
- State Key Laboratory of Chemical Resource Engineering, Innovation Centre for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Xiaole Zhou
- State Key Laboratory of Chemical Resource Engineering, Innovation Centre for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Leyu Wang
- State Key Laboratory of Chemical Resource Engineering, Innovation Centre for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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Zhang S, Zhao X, Qiu Y, Xiong Y, Meng G, Chen W, Liu Z, Zhang J. Electron Deficient Ir-O Bonds Promote Heterogeneous Ir-Catalyzed Anti-Markovnikov Hydroboration of Alkenes under Mild Neat Conditions. Nano Lett 2024; 24:5165-5173. [PMID: 38630980 DOI: 10.1021/acs.nanolett.4c00163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Tuning electronic characteristics of metal-ligand bonds based on reaction pathways to achieve efficient catalytic processes has been widely studied and proven to be feasible in homogeneous catalysis, but it is scarcely investigated in heterogeneous catalysis. Herein, we demonstrate the regulation of the electronic configuration of Ir-O bonds in an Ir single-atom catalyst according to the borane activation mechanism. Ir-O bonds in Ir1/Ni(OH)x are found to be more electron-poor than those in Ir1/NiOx. Despite the mild solvent-free conditions and ambient temperature, Ir1/Ni(OH)x exhibits outstanding performance for the hydroboration of alkenes, furnishing the desired alkylboronic esters with a turnover frequency value of ≤3060 h-1 and 99% anti-Markovnikov selectivity, which is significantly better than that of Ir1/NiOx (42 h-1). It is further proven that the more electron-poor Ir-O bonds as active centers are more oxidative and so benefit the activation of the H-B bond in the reductive pinacolborane.
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Affiliation(s)
- Shasha Zhang
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China
| | - Xudong Zhao
- College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001, China
| | - Yajun Qiu
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, China
| | - Yu Xiong
- Department of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Ge Meng
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China
| | - Wei Chen
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China
| | - Zhiliang Liu
- College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001, China
| | - Jian Zhang
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, China
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Li Z, Wu Y, Wang H, Wu Z, Wu X. High-Efficiency Electrocatalytic Reduction of N 2O with Single-Atom Cu Supported on Nitrogen-Doped Carbon. Environ Sci Technol 2024. [PMID: 38653761 DOI: 10.1021/acs.est.4c00765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Nitrous oxide (N2O) is a potent greenhouse gas with a high global warming potential, emphasizing the critical need to develop efficient elimination methods. Electrocatalytic N2O reduction reaction (N2ORR) stands out as a promising approach, offering room temperature conversion of N2O to N2 without the production of NOx byproducts. In this study, we present the synthesis of a copper-based single-atom catalyst featuring atomic Cu on nitrogen-doped carbon black (Cu1-NCB). Attributed to the highly dispersed single-atom Cu sites and the effective suppression of the hydrogen evolution reaction, Cu1-NCB demonstrated an optimal N2 faradaic efficiency (82.1%) and yield rate (3.53 mmol h-1 mgmetal-1) at -0.2 and -0.5 V vs RHE, respectively, outperforming previously reported N2ORR electrocatalysts. Further, a gas diffusion electrode cell was employed to improve mass transfer and achieved a 28.6% conversion rate of 30% N2O with only a 14 s residence time, demonstrating the potential for practical application. Density functional theory calculations identified Cu-N4 as the crucial active site for N2ORR, highlighting the significance of the unsaturated coordination and metal-support electronic structure. O-terminal adsorption of N2O was favored, and the dissociative adsorption (*ON2 → *O + N2) was the rate-determining step. These findings reveal the broad prospects of N2O decomposition via electrocatalysis.
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Affiliation(s)
- Zhe Li
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China
| | - Yunshuo Wu
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China
| | - Haiqiang Wang
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China
| | - Zhongbiao Wu
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China
| | - Xuanhao Wu
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China
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4
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Guan W, Cheng W, Pei S, Chen X, Yuan Z, Lu C. Probing Coordination Number of Single-Atom Catalysts by d-Band Center-Regulated Luminescence. Angew Chem Int Ed Engl 2024; 63:e202401214. [PMID: 38393606 DOI: 10.1002/anie.202401214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 02/21/2024] [Accepted: 02/23/2024] [Indexed: 02/25/2024]
Abstract
It is essential to probe the coordination number (CN) because it is a crucial factor to ensure the catalytic capability of single-atom catalysts (SACs). Currently, synchrotron X-ray absorption spectroscopy (XAS) is widely used to measure the CN. However, the scarcity of synchrotron X-ray source and complicated data analysis restrict its wide applications in determining the CN of SACs. In this contribution, we have developed a d-band center-regulated acetone cataluminescence (CTL) probe for a rapid screening of the CN of Pt-SACs. It is disclosed that the CN-triggered CTL is attributed to the fact that the increased CN could induce the downward shift of d-band center position, which assists the acetone adsorption and promotes the subsequent catalytic reaction. In addition, the universality of the proposed acetone-CTL probe is verified by determining the CN of Fe-SACs. This work has opened a new avenue for exploring an alternative to synchrotron XAS for the determination of CN of SACs and even conventional metal catalysts through d-band center-regulated CTL.
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Affiliation(s)
- Weijiang Guan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Weiwei Cheng
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Shuxin Pei
- Key Laboratory of Theoretical and Computational Photochemistry of Ministry of Education, Beijing Normal University, Beijing, 100875, China
| | - Xuebo Chen
- Key Laboratory of Theoretical and Computational Photochemistry of Ministry of Education, Beijing Normal University, Beijing, 100875, China
| | - Zhiqin Yuan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Chao Lu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
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5
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Wu L, Yang F, Niu K, Zhao J, Zhang X, Lu X, Li X, Huang Y, Chen J. Single-Mg-Atom Catalyst with a Dual Active Center as an Emerging Promising Sensing Platform. ACS Appl Mater Interfaces 2024. [PMID: 38607228 DOI: 10.1021/acsami.4c03081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
Bisphenol compounds [bisphenol A (BPA), etc.] are one class of the most important and widespread pollutants in food and environment, which pose severe endocrine disrupting effect, reproductive toxicity, immunotoxicity, and metabolic toxicity on humans and animals. Simultaneous rapid determination of BPA and its analogues (bisphenol S, bisphenol AF, etc.) with extraordinary potential resolution and sensitivity is of great significance but still extremely challenging. Herein, a series of single-atom catalysts (SACs) were synthesized by anchoring different metal atoms (Mg, Co, Ni, and Cu) on N-doped carbon materials and used as sensing materials for simultaneous detection of bisphenols with similar chemical structures. The Mg-based SAC enables the potential discrimination and simultaneous rapid detection of multiple bisphenols, showing outstanding analytical performances, outperforming all other SACs and traditional electrode materials. Our experiments and density functional theory calculations show that pyrrolic N serves as the adsorption site for the adsorption of bisphenols and the Mg atom serves as the active site for the electrocatalytic oxidation of bisphenols, which play a synergistic role as dual active centers in improving the sensing performance. The results of this work may pave the way for the rational design of SACs as advanced sensing and catalytic materials.
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Affiliation(s)
- Lingxia Wu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
- School of Environmental & Municipal Engineering, Qingdao University of Technology, Qingdao 266033, China
| | - Feifei Yang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
| | - Kai Niu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian Zhao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
| | - Xiong Zhang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
| | - Xianbo Lu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
| | - Xuning Li
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
| | - Yanqiang Huang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
| | - Jiping Chen
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
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Yang Y, Wang G, Zhang S, Jiao C, Wu X, Pan C, Mao J, Liu Y. Boron in the Second Coordination Sphere of Fe Single Atom Boosts the Oxygen Reduction Reaction. ACS Appl Mater Interfaces 2024; 16:16224-16231. [PMID: 38513153 DOI: 10.1021/acsami.4c00148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
Metal single atoms coordinated with four nitrogen atoms (M1N4) are regarded as tremendously promising catalysts for the electrocatalytic oxygen reduction reaction (ORR). Nevertheless, the strong bond intensity between the metal center and the O atom in oxygen-containing intermediates significantly limits the ORR activity of M1N4. Herein, the catalytically active B atom is successfully introduced into the second coordination sphere of the Fe single atom (Fe1N4-B-C) to realize the alternative binding of B and O atoms and thus facilitate the ORR activity. Compared with the pristine Fe1N4 catalyst, the synthesized Fe1N4-B-C catalyst exhibits improved ORR catalytic capability with a half-wave potential (E1/2) of 0.80 V and a kinetic current density (JK) of 5.32 mA cm-2 in acid electrolyte. Moreover, in an alkaline electrolyte, the Fe1N4-B-C catalyst displays remarkable ORR activity with E1/2 of 0.87 V and JK of 8.94 mA cm-2 at 0.85 V, outperforming commercial Pt/C. Notably, the mechanistic study has revealed that the active center is the B atom in the second coordination shell of the Fe1N4-B-C catalyst, which avoids the direct bonding of Fe-O. The B center has a moderate binding force to the ORR intermediate, which flattens the ORR energy diagram and thereby improves the ORR performance. Therefore, this study offers a novel strategy for tailoring catalytic performance by tuning the active center of single-atom catalyst.
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Affiliation(s)
- Yan Yang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Gang Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Shuangshuang Zhang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Chi Jiao
- Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Xiaoyan Wu
- Anhui RuiHy Power Technology Co., Ltd., Wuhu 241002, China
| | - Chenbing Pan
- Anhui RuiHy Power Technology Co., Ltd., Wuhu 241002, China
| | - Junjie Mao
- Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Yan Liu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
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Chen J, Liu X, Zhang P, Zhang S, Zhou H, Li L, Luo H, Wang H, Sun Y. Aerobic Oxidative Carboxylation of Styrene Over Cobalt Catalysts: Integrated CO 2 Capture and Conversion. ChemSusChem 2024:e202301567. [PMID: 38517635 DOI: 10.1002/cssc.202301567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 03/17/2024] [Accepted: 03/19/2024] [Indexed: 03/24/2024]
Abstract
The direct synthesis of cyclic carbonates through oxidative carboxylation of alkenes using CO2 and O2 offers a sustainable and carbon-neutral method for CO2 utilization, which is, however, still a largely unexplored field. Here we develop a single-atom catalyst (SAC) Co-N/O-C as the earth-abundant metal catalyst for the oxidative carboxylation of styrene with CO2 and O2. Remarkably, even using the flue gas as an impure CO2 and O2 source, desired cyclic carbonate could be obtained with moderate productivity, which shows the potential for integrated CO2 capture and conversion, leveraging the high CO2 adsorption capacity of Co-N/O-C. In addition, the catalyst can be reused five times without an obvious decline in activity. Detailed characterizations and theoretical calculations elucidate the crucial role of single Co atoms in activating O2 and CO2, as well as controlling selectivity.
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Affiliation(s)
- Junjun Chen
- CAS Key Laboratory of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, P. R. China
- University of Chinese Academy of Science, Beijing, 100049, P. R. China
| | - Xiaofang Liu
- CAS Key Laboratory of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, P. R. China
| | - Peipei Zhang
- CNOOC Institute of Chemical & Advanced Materials (Beijing) Co. Ltd., Beijing, 102209, P. R. China
| | - Shunan Zhang
- Institute of Carbon Neutrality, Shanghai Tech University, Shanghai, 201203, P. R. China
| | - Haozhi Zhou
- Institute of Carbon Neutrality, Shanghai Tech University, Shanghai, 201203, P. R. China
| | - Lin Li
- CAS Key Laboratory of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, P. R. China
- University of Chinese Academy of Science, Beijing, 100049, P. R. China
| | - Hu Luo
- CAS Key Laboratory of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, P. R. China
| | - Hui Wang
- CAS Key Laboratory of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, P. R. China
- Institute of Carbon Neutrality, Shanghai Tech University, Shanghai, 201203, P. R. China
| | - Yuhan Sun
- CAS Key Laboratory of Low-carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, P. R. China
- Institute of Carbon Neutrality, Shanghai Tech University, Shanghai, 201203, P. R. China
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8
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Qu W, Tang Z, Wen H, Tang S, Lian Q, Zhao H, Tian S, Shu D, He C. Optimization of Carbon-Defect Engineering to Boost Catalytic Ozonation Efficiency of Single Fe─N 4 Coordination Motif. Small 2024:e2311879. [PMID: 38461527 DOI: 10.1002/smll.202311879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 02/27/2024] [Indexed: 03/12/2024]
Abstract
Carbon-defect engineering in single-atom metal-nitrogen-carbon (M─N─C) catalysts by straightforward and robust strategy, enhancing their catalytic activity for volatile organic compounds, and uncovering the carbon vacancy-catalytic activity relationship are meaningful but challenging. In this study, an iron-nitrogen-carbon (Fe─N─C) catalyst is intentionally designed through a carbon-thermal-diffusion strategy, exposing extensively the carbon-defective Fe─N4 sites within a micro-mesoporous carbon matrix. The optimization of Fe─N4 sites results in exceptional catalytic ozonation efficiency, surpassing that of intact Fe─N4 sites and commercial MnO2 by 10 and 312 times, respectively. Theoretical calculations and experimental data demonstrated that carbon-defect engineering induces selective cleavage of C─N bond neighboring the Fe─N4 motif. This induces an increase in non-uniform charges and Fermi density, leading to elevated energy levels at the center of Fe d-band. Compared to the intact atomic configuration, carbon-defective Fe─N4 site is more activated to strengthen the interaction with O3 and weaken the O─O bond, thereby reducing the barriers for highly active surface atomic oxygen (*O/*OO), ultimately achieving efficient oxidation of CH3 SH and its intermediates. This research not only offers a viable approach to enhance the catalytic ozonation activity of M─N─C but also advances the fundamental comprehension of how periphery carbon environment influences the characteristics and efficacy of M─N4 sites.
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Affiliation(s)
- Wei Qu
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China
| | - Zhuoyun Tang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China
| | - Hailin Wen
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China
| | - Su Tang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China
| | - Qiyu Lian
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China
| | - Huinan Zhao
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China
| | - Shuanghong Tian
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China
| | - Dong Shu
- School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Chun He
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China
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Liu Y, Jiang YN, Zhang M, Zhang X, Ma Y. Non-Noble-Metal-Doped Carbon Nitride Photocatalysts for Water Splitting Screened Out by Empty Defect States and the d-Band Center. ACS Appl Mater Interfaces 2024. [PMID: 38419285 DOI: 10.1021/acsami.3c17808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
A rational design of water-splitting photocatalysts from the perspective of the electronic structure is highly desirable for optimizing catalytic activities. However, the structure-activity relationship is still unclear, which impedes the development of efficient catalysts. Herein, by comparing systematically the overall water-splitting capability of 20 kinds of metallic elements anchored at three sites (including cavity, carbon vacancy, and nitrogen vacancy) of graphitic carbon nitride (g-C3N4) through density functional theory calculations, we uncover that availability of in-gap empty defect states and the d-band center position are paramount parameters to determine activities of g-C3N4 on photocatalytic water splitting. In-gap empty states play a role in accommodating electrons from H2O to facilitate its splitting. A lower d-band center weakens the interaction between reaction intermediates and g-C3N4, thereby promoting O2 desorption. Metals embedded at carbon vacancies are found to be superior to those at cavities and nitrogen vacancies because the former not only provides ample in-gap empty states but also has a lower d-band center. We also discover a rule that, for a reaction in which the bond order between the metal and intermediate enlarges (reduces), its reaction difficulty increases (decreases) with the increasing atomic number for elements in the same period. After screening, we find that non-noble metals Co, Ni, and Ga anchored at carbon vacancies possess catalytic performances comparable to Pd- and Pt-doped systems, with the rate-determining barriers less than 0.55 eV. Our findings may provide useful information for designing effective photocatalysts.
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Affiliation(s)
- Yaru Liu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, People's Republic of China
| | - Ya-Nan Jiang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, People's Republic of China
| | - Min Zhang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, People's Republic of China
| | - Xiao Zhang
- Shandong Open University, Jinan, Shandong 250002, People's Republic of China
| | - Yuchen Ma
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, People's Republic of China
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10
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Ma D, Tang Z, Guan X, Liang Z, Liang Q, Jiao Y, Wang L, Ye L, Huang H, He C, Xia D. Unraveling Valence Electron Number Dependent Excitonic Effects over M 1-N 3C 1 Sites in Single-Atom Catalysts. ACS Nano 2024; 18:6579-6590. [PMID: 38353995 DOI: 10.1021/acsnano.3c12701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Excitonic effects significantly influence the selective generation of reactive oxygen species and photothermal conversion efficiency in photocatalytic reactions; however, the intrinsic factors governing excitonic effects remain elusive. Herein, a series of single-atom catalysts with well-defined M1-N3C1 (M = Mn, Fe, Co, and Ni) active sites are designed and synthesized to investigate the structure-activity relationship between photocatalytic materials and excitonic effects. Comprehensive characterization and theoretical calculations unveil that excitonic effects are positively correlated with the number of valence electrons in single metal atoms. The single Mn atom with 5.93 valence electrons exhibits the weakest excitonic effects, which dominate superoxide radical (O2•-) generation through charge transfer and enhance photothermal conversion efficiency. Conversely, the single Ni atom with 9.27 valence electrons exhibits the strongest excitonic effects, dominating singlet oxygen (1O2) generation via energy transfer while suppressing photothermal conversion efficiency. Based on the valence electron number dependent excitonic effects, a reaction environment with hyperthermia and abundant cytotoxic O2•- is designed, achieving efficient and stable water disinfection. This work reveals single metal atom dependent excitonic effects and presents an atomic-level methodology for catalytic application targeted reaction environment tailoring.
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Affiliation(s)
- Dingren Ma
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Zhuoyun Tang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Xinyi Guan
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Zhuocheng Liang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Qiwen Liang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Yimu Jiao
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Li Wang
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, People's Republic of China
| | - Liqun Ye
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, People's Republic of China
| | - Hongwei Huang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, People's Republic of China
| | - Chun He
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Dehua Xia
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
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11
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Pan M, Cui X, Jing Q, Duan H, Ouyang F, Wu R. Single Transition-Metal Atom Anchored on a Rhenium Disulfide Monolayer: An Efficient Bifunctional Electrocatalyst for the Oxygen Evolution and Oxygen Reduction Reactions. Small 2024:e2308416. [PMID: 38361226 DOI: 10.1002/smll.202308416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 01/02/2024] [Indexed: 02/17/2024]
Abstract
Developing efficient oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) bifunctional electrocatalysts is attractive for rechargeable metal-air batteries. Meanwhile, single metal atoms embedded in 2D layered transition metal chalcogenides (TMDs) have become a very promising catalyst. Recently, many attentions have been paid to the 2D ReS2 electrocatalyst due to its unique distorted octahedral 1T' crystal structure and thickness-independent electronic properties. Here, the catalytic activity of different transition metal (TM) atoms embedded in ReS2 using the density functional theory is investigated. The results indicate that TM@ReS2 exhibits outstanding thermal stability, good electrical conductivity, and electron transfer for electrochemical reactions. And the Ir@ReS2 and Pd@ReS2 can be used as OER/ORR bifunctional electrocatalysts with a lower overpotential for OER (ηOER ) of 0.44 V and overpotentials for ORR (ηORR ) of 0.26 V and 0.27 V, respectively. The excellent catalytic activity is attributed to the optimal adsorption strength for oxygen intermediates coming from the effective modulation of the electronic structure of ReS2 after Ir/Pd doping. The results can help to deeply understand the catalytic activity of TM@ReS2 and develop novel and highly efficient OER/ORR electrocatalysts.
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Affiliation(s)
- Meiling Pan
- Xinjiang Key Laboratory of Solid State Physics and Devices & School of Physical Science and Technology, Xinjiang University, 777 Huarui Street, Urumqi, 830017, China
| | - Xiuhua Cui
- Xinjiang Key Laboratory of Solid State Physics and Devices & School of Physical Science and Technology, Xinjiang University, 777 Huarui Street, Urumqi, 830017, China
| | - Qun Jing
- Xinjiang Key Laboratory of Solid State Physics and Devices & School of Physical Science and Technology, Xinjiang University, 777 Huarui Street, Urumqi, 830017, China
- School of Physics, Hunan Key Laboratory for Super-Microstructure and Ultrafast Process, and Hunan Key Laboratory of Nanophotonics and Devices, Central South University, Changsha, 410083, China
| | - Haiming Duan
- Xinjiang Key Laboratory of Solid State Physics and Devices & School of Physical Science and Technology, Xinjiang University, 777 Huarui Street, Urumqi, 830017, China
| | - Fangping Ouyang
- Xinjiang Key Laboratory of Solid State Physics and Devices & School of Physical Science and Technology, Xinjiang University, 777 Huarui Street, Urumqi, 830017, China
- School of Physics, Hunan Key Laboratory for Super-Microstructure and Ultrafast Process, and Hunan Key Laboratory of Nanophotonics and Devices, Central South University, Changsha, 410083, China
| | - Rong Wu
- Xinjiang Key Laboratory of Solid State Physics and Devices & School of Physical Science and Technology, Xinjiang University, 777 Huarui Street, Urumqi, 830017, China
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12
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Guo J, Wang Y, Shang Y, Yin K, Li Q, Gao B, Li Y, Duan X, Xu X. Fenton-like activity and pathway modulation via single-atom sites and pollutants comediates the electron transfer process. Proc Natl Acad Sci U S A 2024; 121:e2313387121. [PMID: 38190529 PMCID: PMC10801885 DOI: 10.1073/pnas.2313387121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 11/29/2023] [Indexed: 01/10/2024] Open
Abstract
The studies on the origin of versatile oxidation pathways toward targeted pollutants in the single-atom catalysts (SACs)/peroxymonosulfate (PMS) systems were always associated with the coordination structures rather than the perspective of pollutant characteristics, and the analysis of mechanism commonality is lacking. In this work, a variety of single-atom catalysts (M-SACs, M: Fe, Co, and Cu) were fabricated via a pyrolysis process using lignin as the complexation agent and substrate precursor. Sixteen kinds of commonly detected pollutants in various references were selected, and their lnkobs values in M-SACs/PMS systems correlated well (R2 = 0.832 to 0.883) with their electrophilic indexes (reflecting the electron accepting/donating ability of the pollutants) as well as the energy gap (R2 = 0.801 to 0.840) between the pollutants and M-SACs/PMS complexes. Both the electron transfer process (ETP) and radical pathways can be significantly enhanced in the M-SACs/PMS systems, while radical oxidation was overwhelmed by the ETP oxidation toward the pollutants with lower electrophilic indexes. In contrast, pollutants with higher electrophilic indexes represented the weaker electron-donating capacity to the M-SACs/PMS complexes, which resulted in the weaker ETP oxidation accompanied with noticeable radical oxidation. In addition, the ETP oxidation in different M-SACs/PMS systems can be regulated via the energy gaps between the M-SACs/PMS complexes and pollutants. As a result, the Fenton-like activities in the M-SACs/PMS systems could be well modulated by the reaction pathways, which were determined by both electrophilic indexes of pollutants and single-atom sites. This work provided a strategy to establish PMS-based AOP systems with tunable oxidation capacities and pathways for high-efficiency organic decontamination.
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Affiliation(s)
- Jirui Guo
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao266237, People’s Republic of China
| | - Yujie Wang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao266237, People’s Republic of China
| | - Yanan Shang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao266590, People’s Republic of China
| | - Kexin Yin
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao266237, People’s Republic of China
| | - Qian Li
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao266237, People’s Republic of China
| | - Baoyu Gao
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao266237, People’s Republic of China
| | - Yanwei Li
- Environment Research Institute, Shandong University, Qingdao266237, People’s Republic of China
| | - Xiaoguang Duan
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA5005, Australia
| | - Xing Xu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao266237, People’s Republic of China
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13
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Zhang SL, Zhang J, Li Y, Pan Z, Zhang J, Wang W, Xing Z, Cheng W, Cheng H, Tham NN, Wang J, Liu Z. Engineering FeCo Dual Sites on Tube-on-Plate Hollow Structure for Efficient Oxygen Electroreduction. ACS Appl Mater Interfaces 2023; 15:59454-59462. [PMID: 38102993 DOI: 10.1021/acsami.3c13941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2023]
Abstract
Atomically dispersed single-atom catalysts are intriguing catalysts in the field of electrocatalysis for nearly 100% exploitation of metal atoms. However, they are still far from practical usage due to the scaling relationship limit and metal loading limit. Generation of a diatomic complex would offer superior catalytic performance through the cooperation of two neighboring atoms as active sites. Herein, Fe/Co dual atomic sites embedded in a tube-on-plate hollow structure are designed and fabricated for an efficient electrochemical oxygen reduction reaction (ORR). The unique structure composed of ultrathin nanotube building blocks dramatically maximizes the surface area for copious active site exposure. Thanks to the synergetic interaction between Fe/Co pairs, the obtained FeCo/NC exhibits outstanding ORR activity and stability in alkaline media. Furthermore, density functional theory calculations have revealed that the remarkable activity is attributed to the electron-deficient Fe sites in FeCoN6. This work may pave the way for the innovative design of highly dispersed dual-site catalysts for broader applications in the realm of electrochemical catalysis.
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Affiliation(s)
- Song Lin Zhang
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03138634 ,Republic of Singapore
| | - Jintao Zhang
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03138634 ,Republic of Singapore
| | - Yuke Li
- Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), 1 Fusionopolis Way #16-16 Connexis, Singapore 138632, Republic of Singapore
| | - Zhenghui Pan
- School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
| | - Jia Zhang
- Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), 1 Fusionopolis Way #16-16 Connexis, Singapore 138632, Republic of Singapore
| | - Wanwan Wang
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03138634 ,Republic of Singapore
| | - Zhenxiang Xing
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03138634 ,Republic of Singapore
| | - Weiren Cheng
- Institute for Catalysis Hokkaido University, Sapporo 001-0021, Japan
| | - Hongfei Cheng
- School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
| | - Nguk Neng Tham
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03138634 ,Republic of Singapore
| | - John Wang
- Department of Materials Science and Engineering, National University of Singapore117574 ,Singapore
| | - Zhaolin Liu
- Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03138634 ,Republic of Singapore
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14
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Zhao Y, Chen HC, Ma X, Li J, Yuan Q, Zhang P, Wang M, Li J, Li M, Wang S, Guo H, Hu R, Tu KH, Zhu W, Li X, Yang X, Pan Y. Vacancy Defects Inductive Effect of Asymmetrically Coordinated Single-Atom Fe─N 3 S 1 Active Sites for Robust Electrocatalytic Oxygen Reduction with High Turnover Frequency and Mass Activity. Adv Mater 2023:e2308243. [PMID: 38102967 DOI: 10.1002/adma.202308243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 12/03/2023] [Indexed: 12/17/2023]
Abstract
The development of facile, efficient synthesis method to construct low-cost and high-performance single-atom catalysts (SACs) for oxygen reduction reaction (ORR) is extremely important, yet still challenging. Herein, an atomically dispersed N, S co-doped carbon with abundant vacancy defects (NSC-vd) anchored Fe single atoms (SAs) is reported and a vacancy defects inductive effect is proposed for promoting electrocatalytic ORR. The optimized catalyst featured of stable Fe─N3 S1 active sites exhibits excellent ORR activity with high turnover frequency and mass activity. In situ Raman, attenuated total reflectance surface enhanced infrared absorption spectroscopy reveal the Fe─N3 S1 active sites exhibit different kinetic mechanisms in acidic and alkaline solutions. Operando X-ray absorption spectra reveal the ORR activity of Fe SAs/NSC-vd catalyst in different electrolyte is closely related to the coordination structure. Theoretical calculation reveals the upshifted d band center of Fe─N3 S1 active sites facilitates the adsorption of O2 and accelerates the kinetics process of *OH reduction. The abundant vacancy defects around the Fe─N3 S1 active sites balance the OOH* formation and *OH reduction, thus synergetically promoting the electrocatalytic ORR process.
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Affiliation(s)
- Yilin Zhao
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Hsiao-Chien Chen
- Center for Reliability Science and Technologies, Center for Sustainability and Energy Tecnhologies, Chang Gung University, Taoyuan, 33302, Taiwan
- Kidney Research Center, Department of Nephrology, Chang Gung Memorial Hospital, Linkou, Taoyuan, 33305, Taiwan
| | - Xuelu Ma
- School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, P. R. China
| | - Jiaye Li
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Qing Yuan
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Peng Zhang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Minmin Wang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Junxi Li
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Min Li
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Shifu Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Han Guo
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Ruanbo Hu
- State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Kun-Hua Tu
- Kidney Research Center, Department of Nephrology, Chang Gung Memorial Hospital, Linkou, Taoyuan, 33305, Taiwan
| | - Wei Zhu
- State Key Lab of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Xuning Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Xuan Yang
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Yuan Pan
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, P. R. China
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15
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Liu G, Wang P, Zhang H, Li Y, Zhan S. Enhancement of Pt-O Synergistic Sites through Titanium Vacancies for Low-Temperature Nitrogen Oxide Reduction. Environ Sci Technol 2023; 57:20064-20073. [PMID: 37936375 DOI: 10.1021/acs.est.3c06372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Improving the reaction rate of each step is significant for accelerating the multistep reaction of NO reduction by H2. However, simultaneously enhancing the activation of different gaseous reactants using single-atom catalysts remains a challenge to maximize the activity. Herein, we propose a strategy that utilizes titanium-vacancy-regulated electronic properties of single atoms and defective support (Pt1/d-TiO2) to facilitate electron transfer from edge-share O atoms (OTi) to adjacent Pt single atoms. This leads to the formation of low-valence Pt and unsaturated-charge OTi sites, which causes the catalytic reaction to follow a synergistic mechanism. Specifically, experimental and theoretical analyses demonstrate that low-valence Pt sites finely tune the adsorption of H2 molecules, consequently lowering the dissociation energy from 0.15 to as low as 0.01 eV. Moreover, using quasi-in situ spectroscopy, we clearly observe NO molecules being adsorbed on interfacial oxygen sites of a defective support. Then, the bond energy of the N-O bond is weakened through an electron acceptance-donation mechanism between unsaturated-charge OTi sites and NO, thereby facilitating NO activation. The designed single-atom catalysts with synergistic sites exhibit unmatched activity at low temperatures (above 90% NOx conversion at 100 °C), along with higher turnover frequency value (0.74 s-1) and superior stability, making them potentially suitable for industrial applications.
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Affiliation(s)
- Guoquan Liu
- MOE Key Laboratory of Pollution Processes and Environmental Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, P. R. China
| | - Pengfei Wang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, P. R. China
| | - He Zhang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, P. R. China
| | - Yi Li
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Sihui Zhan
- MOE Key Laboratory of Pollution Processes and Environmental Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, P. R. China
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16
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Xue X, Xue N, Ouyang D, Yang L, Wang Y, Zhu H, Aihemaiti A, Yin J. Biochar-Based Single-Atom Catalyst with Fe-N 3O-C Configuration for Efficient Degradation of Organic Dyes by Peroxymonosulfate Activation. ACS Appl Mater Interfaces 2023. [PMID: 38035388 DOI: 10.1021/acsami.3c12518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Iron single-atom catalysts (Fe SACs) hold great promise for peroxymonosulfate (PMS) activation and degradation of organic pollutants in wastewater. However, insights into crucial catalytic sites and activation mechanisms of biochar-based Fe SACs for PMS remain a challenge. Herein, cotton stalk-derived biochar-based Fe SACs (Fe SACs-BC) with an asymmetric Fe-N/O-C configuration were prepared, and their PMS activation and acid orange 7 (AO7) degradation mechanisms were investigated. The results showed that the removal efficiency of the Fe SACs-BC catalyst with Fe-N3O-C configuration for AO7 and other five investigated organic dyes reached 95-99% within 15 min. The EPR spectrums, quenching experiments, electrochemical analysis, masking experiments, XPS, and theoretical calculations indicated that degradations of organic dyes were dominated by singlet oxygen, which was generated by direct PMS conversion at the electron-deficient carbon and iron sites in the Fe-N3O-C configuration. The Fe SACs-BC/PMS exhibited high removal efficiency and strong tolerance in different water matrices with a wide pH range, various coexisting anions and interfering substances, showing great potential and applicability for efficient treatment of actual textile wastewaters.
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Affiliation(s)
- Xueyan Xue
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, and Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Nan Xue
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, and Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dandan Ouyang
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, and Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China
| | - Liuqian Yang
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, and Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yanan Wang
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, and Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hui Zhu
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, and Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China
| | - Aikelaimu Aihemaiti
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, and Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China
| | - Jiao Yin
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, and Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China
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17
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Jeskey J, Ding Y, Chen Y, Hood ZD, Sterbinsky GE, Jaroniec M, Xia Y. Single-Atom Catalysts for Selective Oxygen Reduction: Transition Metals in Uniform Carbon Nanospheres with High Loadings. JACS Au 2023; 3:3227-3236. [PMID: 38034958 PMCID: PMC10685421 DOI: 10.1021/jacsau.3c00557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/03/2023] [Accepted: 10/05/2023] [Indexed: 12/02/2023]
Abstract
Transition metal single-atom catalysts (SACs) in uniform carbon nanospheres have gained tremendous interest as electrocatalysts owing to their low cost, high activity, and excellent selectivity. However, their preparation typically involves complicated multistep processes that are not practical for industrial use. Herein, we report a facile one-pot method to produce atomically isolated metal atoms with high loadings in uniform carbon nanospheres without any templates or postsynthesis modifications. Specifically, we use a chemical confinement strategy to suppress the formation of metal nanoparticles by introducing ethylenediaminetetraacetic acid (EDTA) as a molecular barrier to spatially isolate the metal atoms and thus generate SACs. To demonstrate the versatility of this synthetic method, we produced SACs from multiple transition metals, including Fe, Co, Cu, and Ni, with loadings as high as 3.87 wt %. Among these catalytic materials, the Fe-based SACs showed remarkable catalytic activity toward the oxygen reduction reaction (ORR), achieving an onset and half-wave potential of 1.00 and 0.831 VRHE, respectively, comparable to that of commercial 20 wt % Pt/C. Significantly, we were able to steer the ORR selectivity toward either energy generation or hydrogen peroxide production by simply changing the transition metal in the EDTA-based precursor.
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Affiliation(s)
- Jacob Jeskey
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
| | - Yong Ding
- School
of Materials Science and Engineering, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
| | - Yidan Chen
- School
of Materials Science and Engineering, Georgia
Institute of Technology, Atlanta, Georgia 30332, United States
| | - Zachary D. Hood
- Applied
Materials Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - George E. Sterbinsky
- Advanced
Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Mietek Jaroniec
- Department
of Chemistry and Biochemistry, Kent State
University, Kent, Ohio 44242, United States
| | - Younan Xia
- School
of Chemistry and Biochemistry, Georgia Institute
of Technology, Atlanta, Georgia 30332, United States
- The Wallace
H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
- School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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18
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Jia J, Tian D. Computational Design of Ni 6@Pt 1M 31 Clusters for Multifunctional Electrocatalysts. Molecules 2023; 28:7563. [PMID: 38005285 PMCID: PMC10675175 DOI: 10.3390/molecules28227563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 06/29/2023] [Accepted: 07/10/2023] [Indexed: 11/26/2023] Open
Abstract
High-efficiency and low-cost multifunctional electrocatalysts for hydrogen evolution reaction (HERs), oxygen evolution reaction (OERs) and oxygen reduction reaction (ORRs) are important for the practical applications of regenerative fuel cells. The activity trends of core-shell Ni6@M32 and Ni6@Pt1M31 (M = Pt, Pd, Cu, Ag, Au) were investigated using the density functional theory (DFT). Rate constant calculations indicated that Ni6@Pt1Ag31 was an efficient HER catalyst. The Volmer-Tafel process was the kinetically favorable reaction pathway for Ni6@Pt1M31. The Volmer-Heyrovsky reaction mechanism was preferred for Ni6@M32. The Pt active site reduced the energy barrier and changed the reaction mechanism. The ORR and OER overpotentials of Ni6@Pt1Ag31 were calculated to be 0.12 and 0.33 V, indicating that Ni6@Pt1Ag31 could be a promising multifunctional electrocatalyst. Ni6@Pt1M31 core-shell clusters present abundant active sites with a moderate adsorption strength for *H, *O, *OH and *OOH. The present study shows that embedding a single Pt atom onto a Ni@M core-shell cluster is a rational strategy for designing an effective multifunctional electrocatalyst.
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Affiliation(s)
| | - Dongxu Tian
- School of Chemistry, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China;
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19
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Liu JH, Jiang H, Liao B, Cao X, Yu L, Chen X. Construction of Single-Atom Catalysts for N, O Synergistic Coordination and Application to Electrocatalytic O 2 Reduction. Molecules 2023; 28:7264. [PMID: 37959686 PMCID: PMC10650445 DOI: 10.3390/molecules28217264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 10/23/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
Replacing expensive platinum oxygen reduction reaction (ORR) catalysts with atomically dispersed single-atom catalysts is an effective way to improve the energy conversion efficiency of fuel cells. Herein, a series of single-atom catalysts, TM-N2O2Cx (TM=Sc-Zn) with TM-N2O2 active units, were designed, and their catalytic performance for electrocatalytic O2 reduction was investigated based on density functional theory. The results show that TM-N2O2Cx exhibits excellent catalytic activity and stability in acidic media. The eight catalysts (TM=Sc, Ti, V, Cr, Mn, Fe, Co, and Ni) are all 4e- reaction paths, among which Sc-N2O2Cx, Ti-N2O2Cx, and V-N2O2Cx follow dissociative mechanisms and the rest are consistent with associative mechanisms. In particular, Co-N2O2Cx and Ni-N2O2Cx enable a smooth reduction in O2 at small overpotentials (0.44 V and 0.49 V, respectively). Furthermore, a linear relationship between the adsorption free energies of the ORR oxygen-containing intermediates was evident, leading to the development of a volcano plot for the purpose of screening exceptional catalysts for ORR. This research will offer a novel strategy for the design and fabrication of exceptionally efficient non-precious metal catalysts on an atomic scale.
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Affiliation(s)
- Jin-Hang Liu
- Jiangxi Province Engineering Research Center of Ecological Chemical Industry, School of Chemistry and Chemical Engineering, Jiujiang University, Jiujiang 332005, China; (J.-H.L.); (H.J.); (X.C.); (L.Y.)
| | - Huixiong Jiang
- Jiangxi Province Engineering Research Center of Ecological Chemical Industry, School of Chemistry and Chemical Engineering, Jiujiang University, Jiujiang 332005, China; (J.-H.L.); (H.J.); (X.C.); (L.Y.)
| | - Bokai Liao
- Guangzhou Key Laboratory for Clean Energy and Materials, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China;
| | - Xiaohua Cao
- Jiangxi Province Engineering Research Center of Ecological Chemical Industry, School of Chemistry and Chemical Engineering, Jiujiang University, Jiujiang 332005, China; (J.-H.L.); (H.J.); (X.C.); (L.Y.)
| | - Langhua Yu
- Jiangxi Province Engineering Research Center of Ecological Chemical Industry, School of Chemistry and Chemical Engineering, Jiujiang University, Jiujiang 332005, China; (J.-H.L.); (H.J.); (X.C.); (L.Y.)
| | - Xiudong Chen
- Jiangxi Province Engineering Research Center of Ecological Chemical Industry, School of Chemistry and Chemical Engineering, Jiujiang University, Jiujiang 332005, China; (J.-H.L.); (H.J.); (X.C.); (L.Y.)
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20
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Zhu Y, Gao Y, Lu Y, Cheng Y. Enhancing Oxygen Reduction on Fe Single-Atom Catalysts by Tuning Noncovalent Interactions in Electrode/Electrolyte Interfaces. ACS Appl Mater Interfaces 2023; 15:48179-48184. [PMID: 37796027 DOI: 10.1021/acsami.3c10055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
Highly efficient electrochemical interfaces are significant for the oxygen reduction reaction (ORR). However, previous efforts have been mainly paid to design catalytic sites with high intrinsic activity and neglect the electrode/electrolyte interfaces, especially the noncovalent interactions in the outer Helmholtz plane (OHP). Herein, an Fe-N-C single-atom catalyst is synthesized and acts as the model catalyst to demonstrate the effect of noncovalent interactions on the ORR performance. Two specific molecules of THA+ and TEA+ with different structures and functional groups have been selected to tune the OHP through noncovalent interactions. TEA+ can adjust the OHP, improve the oxygen diffusion coefficient, and increase the double-layer capacitance. Therefore, TEA+ enhances the activity, selectivity, and stability of Fe-N-C single-atom catalysts toward the ORR. This provides a new approach to finding new directions in designing electrochemical interfaces beyond the intrinsic catalytic sites in acidic electrolytes.
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Affiliation(s)
- Ying Zhu
- State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Yifan Gao
- State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Yiqing Lu
- State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Yuanhui Cheng
- State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
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21
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Jiang W, Zhu H, Yang J, Low BQL, Wu W, Chen M, Ma J, Long R, Low J, Zhu H, Heng JZX, Tang KY, Chai CHT, Lin M, Zhu Q, Zhang Y, Chi D, Li Z, Loh XJ, Xiong Y, Ye E. Integration of Single-Atom Catalyst with Z-Scheme Heterojunction for Cascade Charge Transfer Enabling Highly Efficient Piezo-Photocatalysis. Adv Sci (Weinh) 2023; 10:e2303448. [PMID: 37544890 PMCID: PMC10558689 DOI: 10.1002/advs.202303448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 07/06/2023] [Indexed: 08/08/2023]
Abstract
Piezo-assisted photocatalysis (namely, piezo-photocatalysis), which utilizes mechanical energy to modulate spatial and energy distribution of photogenerated charge carriers, presents a promising strategy for molecule activation and reactive oxygen species (ROS) generation toward applications such as environmental remediation. However, similarly to photocatalysis, piezo-photocatalysis also suffers from inferior charge separation and utilization efficiency. Herein, a Z-scheme heterojunction composed of single Ag atoms-anchored polymeric carbon nitride (Ag-PCN) and SnO2- x is developed for efficient charge carrier transfer/separation both within the catalyst and between the catalyst and surface oxygen molecules (O2 ). As revealed by charge dynamics analysis and theoretical simulations, the synergy between the single Ag atoms and the Z-scheme heterojunction initiates a cascade electron transfer from SnO2- x to Ag-PCN and then to O2 adsorbed on Ag. With ultrasound irradiation, the polarization field generated within the piezoelectric hybrid further accelerates charge transfer and regulates the O2 activation pathway. As a result, the Ag-PCN/SnO2- x catalyst efficiently activates O2 into ·O2 - , ·OH, and H2 O2 under co-excitation of visible light and ultrasound, which are consequently utilized to trigger aerobic degradation of refractory antibiotic pollutants. This work provides a promising strategy to maneuver charge transfer dynamics for efficient piezo-photocatalysis by integrating single-atom catalysts (SACs) with Z-scheme heterojunction.
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Affiliation(s)
- Wenbin Jiang
- Institute of Materials Research and Engineering (IMRE)Agency for Science, Technology and Research (A*STAR)2 Fusionopolis Way, Innovis #08‐03Singapore138634Republic of Singapore
| | - Hui Zhu
- School of Electrical and Electronic EngineeringNanyang Technological University50 Nanyang AvenueSingapore639798Republic of Singapore
| | - Jing Yang
- Institute of High Performance Computing (IHPC)Agency for Science, Technology and Research (A*STAR)1 Fusionopolis Way, #16‐16 ConnexisSingapore138632Republic of Singapore
| | - Beverly Qian Ling Low
- Institute of Materials Research and Engineering (IMRE)Agency for Science, Technology and Research (A*STAR)2 Fusionopolis Way, Innovis #08‐03Singapore138634Republic of Singapore
| | - Wen‐Ya Wu
- Institute of Materials Research and Engineering (IMRE)Agency for Science, Technology and Research (A*STAR)2 Fusionopolis Way, Innovis #08‐03Singapore138634Republic of Singapore
| | - Mingxi Chen
- Institute of Materials Research and Engineering (IMRE)Agency for Science, Technology and Research (A*STAR)2 Fusionopolis Way, Innovis #08‐03Singapore138634Republic of Singapore
| | - Jun Ma
- School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui230026P. R. China
| | - Ran Long
- School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui230026P. R. China
| | - Jingxiang Low
- School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui230026P. R. China
| | - Houjuan Zhu
- Institute of Materials Research and Engineering (IMRE)Agency for Science, Technology and Research (A*STAR)2 Fusionopolis Way, Innovis #08‐03Singapore138634Republic of Singapore
| | - Jerry Zhi Xiong Heng
- Institute of Materials Research and Engineering (IMRE)Agency for Science, Technology and Research (A*STAR)2 Fusionopolis Way, Innovis #08‐03Singapore138634Republic of Singapore
| | - Karen Yuanting Tang
- Institute of Materials Research and Engineering (IMRE)Agency for Science, Technology and Research (A*STAR)2 Fusionopolis Way, Innovis #08‐03Singapore138634Republic of Singapore
| | - Casandra Hui Teng Chai
- Institute of Materials Research and Engineering (IMRE)Agency for Science, Technology and Research (A*STAR)2 Fusionopolis Way, Innovis #08‐03Singapore138634Republic of Singapore
| | - Ming Lin
- Institute of Materials Research and Engineering (IMRE)Agency for Science, Technology and Research (A*STAR)2 Fusionopolis Way, Innovis #08‐03Singapore138634Republic of Singapore
| | - Qiang Zhu
- Institute of Materials Research and Engineering (IMRE)Agency for Science, Technology and Research (A*STAR)2 Fusionopolis Way, Innovis #08‐03Singapore138634Republic of Singapore
| | - Yong‐Wei Zhang
- Institute of High Performance Computing (IHPC)Agency for Science, Technology and Research (A*STAR)1 Fusionopolis Way, #16‐16 ConnexisSingapore138632Republic of Singapore
| | - Dongzhi Chi
- Institute of Materials Research and Engineering (IMRE)Agency for Science, Technology and Research (A*STAR)2 Fusionopolis Way, Innovis #08‐03Singapore138634Republic of Singapore
| | - Zibiao Li
- Institute of Materials Research and Engineering (IMRE)Agency for Science, Technology and Research (A*STAR)2 Fusionopolis Way, Innovis #08‐03Singapore138634Republic of Singapore
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2)Agency for Science, Technology and Research (A*STAR)1 Pesek Road, Jurong IslandSingapore627833Republic of Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering (IMRE)Agency for Science, Technology and Research (A*STAR)2 Fusionopolis Way, Innovis #08‐03Singapore138634Republic of Singapore
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2)Agency for Science, Technology and Research (A*STAR)1 Pesek Road, Jurong IslandSingapore627833Republic of Singapore
| | - Yujie Xiong
- School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui230026P. R. China
| | - Enyi Ye
- Institute of Materials Research and Engineering (IMRE)Agency for Science, Technology and Research (A*STAR)2 Fusionopolis Way, Innovis #08‐03Singapore138634Republic of Singapore
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2)Agency for Science, Technology and Research (A*STAR)1 Pesek Road, Jurong IslandSingapore627833Republic of Singapore
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22
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Ram S, Choi GH, Lee AS, Lee SC, Bhattacharjee S. Combining First-Principles Modeling and Symbolic Regression for Designing Efficient Single-Atom Catalysts in the Oxygen Evolution Reaction on Mo 2CO 2 MXenes. ACS Appl Mater Interfaces 2023; 15:43702-43711. [PMID: 37676924 DOI: 10.1021/acsami.3c08020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
In this study, we address the significant challenge of overcoming limitations in the catalytic efficiency for the oxygen evolution reaction (OER). The current linear scaling relationships hinder the optimization of the electrocatalytic performance. To tackle this issue, we investigate the potential of designing single-atom catalysts (SACs) on Mo2CO2 MXenes for electrochemical OER using first-principles modeling simulations. By employing the Electrochemical Step Symmetry Index (ESSI) method, we assess OER intermediates to fine-tune the activity and identify the optimal SAC for Mo2CO2 MXenes. Our findings reveal that both Ag and Cu exhibit effectiveness as single atoms for enhancing OER activity on Mo2CO2 MXenes. However, among the 21 chosen transition metals (TMs) in this study, Cu stands out as the best catalyst for tweaking the overpotential (ηOER). This is due to Cu's lowest overpotential compared to other TMs, which makes it more favorable for the OER performance. On the other hand, Ag is closely aligned with ESSI = ηOER, making the tuning of its overpotential more challenging. Furthermore, we employ symbolic regression analysis to identify the significant factors that exhibit a correlation with the OER overpotential. By utilizing this approach, we derive mathematical formulas for the overpotential and identify key descriptors that affect the catalytic efficiency in the electrochemical OER on Mo2CO2 MXenes. This comprehensive investigation not only sheds light on the potential of MXenes in advanced electrocatalytic processes but also highlights the prospect of improved activity and selectivity in OER applications.
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Affiliation(s)
- Swetarekha Ram
- Indo-Korea Science and Technology Center (IKST), Bangalore 560064, India
| | - Gwan Hyun Choi
- Materials Architecturing Research Center, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Albert S Lee
- Materials Architecturing Research Center, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea
- Convergence Research Center for Solutions to Electromagnetic Interference in Future-mobility, Korea Institute of Science and Technology, Hwarang-ro 14-gil5, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Seung-Cheol Lee
- Indo-Korea Science and Technology Center (IKST), Bangalore 560064, India
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23
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Rigby K, Huang D, Leshchev D, Lim HJ, Choi H, Meese AF, Weon S, Stavitski E, Kim JH. Palladium Single-Atom (In)Stability Under Aqueous Reductive Conditions. Environ Sci Technol 2023; 57:13681-13690. [PMID: 37650677 PMCID: PMC10501378 DOI: 10.1021/acs.est.3c03346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 07/21/2023] [Accepted: 08/18/2023] [Indexed: 09/01/2023]
Abstract
Here, we investigate the stability and performance of single-atom Pd on TiO2 for the selective dechlorination of 4-chlorophenol. A challenge inherent to single atoms is their high surface free energy, which results in a tendency for the surface migration and aggregation of metal atoms. This work evaluates various factors affecting the stability of Pd single-atoms, including atomic dispersion, coordination environment, and substrate properties, under reductive aqueous conditions. The transition from single atoms to clusters vastly enhanced dechlorination kinetics without diminishing carbon-chlorine bond selectivity. X-ray absorption spectroscopy analysis using both in situ and ex situ conditions followed the dynamic transformation of single atoms into amorphous clusters, which consist of a unique unsaturated coordination environment and few nanometer diameter. The intricate relationship between stability and performance underscores the vital role of detailed characterization to properly determine the true active species for dehalogenation reactions.
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Affiliation(s)
- Kali Rigby
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States
- NSF
Nanosystems Engineering Research Center for Nanotechnology Enabled
Water Treatment (NEWT), Houston, Texas 77005, United States
| | - Dahong Huang
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States
| | - Denis Leshchev
- National
Synchrotron Light Source-II, Brookhaven
National Laboratory, Upton, New York 11973, United States
| | - Hyun Jeong Lim
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States
| | - Hyeyeon Choi
- School
of Health and Environmental Science, Korea
University, Seoul 02841, Republic
of Korea
- Department
of Health and Safety Convergence Science, Korea University, Seoul 02841, Republic
of Korea
| | - Aidan Francis Meese
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States
| | - Seunghyun Weon
- School
of Health and Environmental Science, Korea
University, Seoul 02841, Republic
of Korea
- Department
of Health and Safety Convergence Science, Korea University, Seoul 02841, Republic
of Korea
| | - Eli Stavitski
- National
Synchrotron Light Source-II, Brookhaven
National Laboratory, Upton, New York 11973, United States
| | - Jae-Hong Kim
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States
- NSF
Nanosystems Engineering Research Center for Nanotechnology Enabled
Water Treatment (NEWT), Houston, Texas 77005, United States
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24
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Chen Z, An F, Zhang Y, Liang Z, Liu W, Xing M. Single-atom Mo-Co catalyst with low biotoxicity for sustainable degradation of high-ionization-potential organic pollutants. Proc Natl Acad Sci U S A 2023; 120:e2305933120. [PMID: 37428912 PMCID: PMC10629517 DOI: 10.1073/pnas.2305933120] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 05/23/2023] [Indexed: 07/12/2023] Open
Abstract
Single-atom catalysts (SACs) are a promising area in environmental catalysis. We report on a bimetallic Co-Mo SAC that shows excellent performance in activating peroxymonosulfate (PMS) for sustainable degradation of organic pollutants with high ionization potential (IP > 8.5 eV). Density Functional Theory (DFT) calculations and experimental tests demonstrate that the Mo sites in Mo-Co SACs play a critical role in conducting electrons from organic pollutants to Co sites, leading to a 19.4-fold increase in the degradation rate of phenol compared to the CoCl2-PMS group. The bimetallic SACs exhibit excellent catalytic performance even under extreme conditions and show long-term activation in 10-d experiments, efficiently degrading 600 mg/L of phenol. Moreover, the catalyst has negligible toxicity toward MDA-MB-231, Hela, and MCF-7 cells, making it an environmentally friendly option for sustainable water treatment. Our findings have important implications for the design of efficient SACs for environmental remediation and other applications in biology and medicine.
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Affiliation(s)
- Zhuan Chen
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai200237, China
| | - Faliang An
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai200237, China
| | - Yayun Zhang
- Shanghai Engineering Research Center for Multimedia Environmental Catalysis and Resource Utilization, East China University of Science and Technology, Shanghai200237, China
| | - Zhiyan Liang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai200237, China
| | - Wenyuan Liu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai200237, China
| | - Mingyang Xing
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai200237, China
- Shanghai Engineering Research Center for Multimedia Environmental Catalysis and Resource Utilization, East China University of Science and Technology, Shanghai200237, China
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25
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Xu C, Zhang YP, Zheng TL, Wang ZQ, Zhao YM, Guo PP, Lu C, Yang KZ, Wei PJ, He QG, Gong XQ, Liu JG. Contracted Fe-N 5-C 11 Sites in Single-Atom Catalysts Boosting Catalytic Performance for Oxygen Reduction Reaction. ACS Appl Mater Interfaces 2023. [PMID: 37379231 DOI: 10.1021/acsami.3c03982] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/30/2023]
Abstract
Promoting the catalyst performance for oxygen reduction reaction (ORR) in energy conversion devices through controlled manipulation of the structure of catalytic active sites has been a major challenge. In this work, we prepared Fe-N-C single-atom catalysts (SACs) with Fe-N5 active sites and found that the catalytic activity of the catalyst with shrinkable Fe-N5-C11 sites for ORR was significantly improved compared with the catalyst bearing normal Fe-N5-C12 sites. The catalyst C@PVI-(TPC)Fe-800, prepared by pyrolyzing an axial-imidazole-coordinated iron corrole precursor, exhibited positive shifted half-wave potential (E1/2 = 0.89 V vs RHE) and higher peak power density (Pmax = 129 mW/cm2) than the iron porphyrin-derived counterpart C@PVI-(TPP)Fe-800 (E1/2 = 0.81 V, Pmax = 110 mW/cm2) in 0.1 M KOH electrolyte and Zn-air batteries, respectively. X-ray absorption spectroscopy (XAS) analysis of C@PVI-(TPC)Fe-800 revealed a contracted Fe-N5-C11 structure with iron in a higher oxidation state than the porphyrin-derived Fe-N5-C12 counterpart. Density functional theory (DFT) calculations demonstrated that C@PVI-(TPC)Fe-800 possesses a higher HOMO energy level than C@PVI-(TPP)Fe-800, which can increase its electron-donating ability and thus help achieve enhanced O2 adsorption as well as O-O bond activation. This work provides a new approach to tune the active site structure of SACs with unique contracted Fe-N5-C11 sites that remarkably promote the catalyst performance, suggesting significant implications for catalyst design in energy conversion devices.
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Affiliation(s)
- Chao Xu
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Yan-Ping Zhang
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Tian-Long Zheng
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China
| | - Zhi-Qiang Wang
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Ye-Min Zhao
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Peng-Peng Guo
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Chen Lu
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Kun-Zu Yang
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Ping-Jie Wei
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Qing-Gang He
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China
| | - Xue-Qing Gong
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Jin-Gang Liu
- Key Laboratory for Advanced Materials, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
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26
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Jin L, Duan X, Sun M, Vecitis CD, Yu H, Liu Y. A General Strategy to Synthesize Fluidic Single Atom Electrodes for Selective Reactive Oxygen Species Production. ACS Nano 2023. [PMID: 37358416 DOI: 10.1021/acsnano.3c04521] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
Abstract
Fine-tuning the geometric and electronic structure of catalytic metal centers via N-coordination engineering offers an effective design for the electrocatalytic transformation of O2 to singlet oxygen (1O2). Herein, we develop a general coordination modulation strategy to synthesize fluidic single-atom electrodes for selective electrocatalytic activation of O2 to 1O2. Using a single Cr atom system as an example, >98% 1O2 selectivity can be achieved from electrocatalytic O2 activation due to the subtle engineering of Cr-N4 sites. Both theoretical simulations and experimental results determined that "end-on" adsorption of O2 onto the Cr-N4 sites lowers the overall activation energy barrier of O2 and promotes the breakage of Cr-OOH bonds to form •OOH intermediates. In addition, the flow-through configuration (k = 0.097 min-1) endowed convection-enhanced mass transport and improved charge transfer imparted by spatial confinement within the lamellar electrode structure compared to that of batch reactor (k = 0.019 min-1). In a practical demonstration, the Cr-N4/MXene electrocatalytic system exhibits a high selectivity toward electron-rich micropollutants (e.g., sulfamethoxazole, bisphenol A, and sulfadimidine). The flow-through design of the fluidic electrode achieves a synergy with the molecular microenvironment that enables selective electrocatalytic 1O2 generation, which could be used in numerous ways, including the treatment of environmental pollution.
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Affiliation(s)
- Limin Jin
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Xiaoguang Duan
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Meng Sun
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Chad D Vecitis
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Hanqing Yu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Technology, University of Science and Technology of China, Hefei 230026, China
| | - Yanbiao Liu
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
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27
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Wang N, Mei R, Lin X, Chen L, Yang T, Liu Q, Chen Z. Cascade Anchoring Strategy for Fabricating High-Loading Pt Single Atoms as Bifunctional Catalysts for Electrocatalytic Hydrogen Evolution and Oxygen Reduction Reactions. ACS Appl Mater Interfaces 2023. [PMID: 37300489 DOI: 10.1021/acsami.3c04602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Carbon supports containing single-atomically dispersed metal-Nx (denoted as MSAC-NxCy, x, y: coordination number) have attracted increasing attention due to their superb performance in heterogeneous catalysis. However, large-scale controllable preparation of single-atom catalysts (SACs) with high concentration of supported metal-Nx is still a big challenge because of the metal atom agglomeration during synthesis at high density and temperatures. Herein, we report a stepwise anchoring strategy from a 1,10-o-phenanthroline Pt chelate to an Nx-doped carbon (NxCy) with isolated Pt single-atom catalysts (PtSAC-NxCy) containing Pt loadings up to 5.31 wt % measured via energy-dispersive X-ray spectroscopy (EDS). The results show that 1,10-o-phenanthroline Pt chelate predominantly contributes to the formation of chelate single metal sites that bind tightly to platinum ions to prevent metal atoms from aggregating, resulting in high metal loading. The high-loading PtSAC-NxCy exhibits a low hydrogen evolution (HER) overpotential of 24 mV at 0.010 A cm-2 current density with a relatively small Tafel gradient of 60.25 mV dec-1 and excellent stable performance. In addition, the PtSAC-NxCy catalyst shows excellent oxygen reduction reaction (ORR) catalytic activity with good stability, represented by the fast ORR kinetics under high-potential conditions. Theoretical calculations show that PtSAC-NC3 (x = 1, y = 3) offers a lower H2O activation energy barrier than Pt nanoparticles. The adsorption free energy of a H atom on a Pt single-atom site is lower than that on a Pt cluster, which is easier for H2 desorption. This study provides a potentially powerful cascade anchoring strategy in the design of other stable MSAC-NxCy catalysts with high-density metal-Nx sites for the HER and ORR.
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Affiliation(s)
- Nan Wang
- Julong College, Shenzhen Technology University, Shenzhen 518118, P. R. China
| | - Riguo Mei
- Julong College, Shenzhen Technology University, Shenzhen 518118, P. R. China
| | - Xidong Lin
- Julong College, Shenzhen Technology University, Shenzhen 518118, P. R. China
| | - Liqiong Chen
- Julong College, Shenzhen Technology University, Shenzhen 518118, P. R. China
| | - Tao Yang
- Julong College, Shenzhen Technology University, Shenzhen 518118, P. R. China
| | - Qingxia Liu
- Julong College, Shenzhen Technology University, Shenzhen 518118, P. R. China
| | - Zhongwei Chen
- Julong College, Shenzhen Technology University, Shenzhen 518118, P. R. China
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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Wang S, Qian C, Zhou S. Theory-Guided Construction of the Unsaturated V-N 2 Site with Carbon Defects for Highly Selective Electrocatalytic Nitrogen Reduction. ACS Appl Mater Interfaces 2023. [PMID: 37290063 DOI: 10.1021/acsami.3c06739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Renewable energy-driven, electrocatalytic nitrogen reduction reaction (NRR) is a promising strategy for ammonia synthesis. However, improving catalyst activity and selectivity under ambient conditions has long been challenging. In this work, we obtained the potential active V-N center through theoretical prediction and successfully constructed the associated V-N2/N3 structure on N-doped carbon materials. Surprisingly, such a catalyst exhibits excellent electrocatalytic NRR performance. The V-N2 catalyst affords a remarkably high faradaic efficiency of 76.53% and an NH3 yield rate of 31.41 μgNH3 h-1 mgCat.-1 at -0.3 V vs RHE. The structural characterization and density functional theory (DFT) calculations verified that the high performance of the catalyst originates from the tuned d-band upon coordination with nitrogen, in line with the original design intention as derived theoretically. Indeed, the V-N2 center with carbon defects enhances dinitrogen adsorption and charge transfer, thereby lowering the energy barriers to form the *NNH intermediates. Such a strategy as a rational design─controllable synthesis─theoretical verification may prove effective as well for other chemical processes.
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Affiliation(s)
- Shuyue Wang
- College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, 310027 Hangzhou, P. R. China
- Institute of Zhejiang University Quzhou, Zheda Road #99, 324000 Quzhou, P. R. China
| | - Chao Qian
- College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, 310027 Hangzhou, P. R. China
- Institute of Zhejiang University Quzhou, Zheda Road #99, 324000 Quzhou, P. R. China
| | - Shaodong Zhou
- College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, 310027 Hangzhou, P. R. China
- Institute of Zhejiang University Quzhou, Zheda Road #99, 324000 Quzhou, P. R. China
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Sun H, Li X, Chen T, Xia S, Yuan T, Yang J, Pang Y, Zheng S. In Situ Trapping Strategy Enables a High-Loading Ni Single-Atom Catalyst as a Separator Modifier for a High-Performance Li-S Battery. ACS Appl Mater Interfaces 2023; 15:19043-19054. [PMID: 37027815 DOI: 10.1021/acsami.3c02153] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
The poor electrochemical reaction kinetics of Li polysulfides is a key barrier that prevents the Li-S batteries from widespread applications. Ni single atoms dispersed on carbon matrixes derived from ZIF-8 are a promising type of catalyst for accelerating the conversion of active sulfur species. However, Ni favors a square-planar coordination that can only be doped on the external surface of ZIF-8, leading to a low loading amount of Ni single atoms after pyrolysis. Herein, we demonstrate an in situ trapping strategy to synthesize Ni and melamine-codoped ZIF-8 precursor (Ni-ZIF-8-MA) by simultaneously introducing melamine and Ni during the synthesis of ZIF-8, which can remarkably decrease the particle size of ZIF-8 and further anchor Ni via Ni-N6 coordination. Consequently, a novel high-loading Ni single-atom (3.3 wt %) catalyst implanted in an N-doped nanocarbon matrix (Ni@NNC) is obtained after high-temperature pyrolysis. This catalyst as a separator modifier shows a superior catalytic effect on the electrochemical transitions of Li polysulfides, which endows the corresponding Li-S batteries with a high specific capacity of 1232.4 mA h g-1 at 0.3 C and an excellent rate capability of 814.9 mA h g-1 at 3 C. Furthermore, a superior areal capacity of 4.6 mA h cm-2 with stable cycling over 160 cycles can be achieved under a critical condition with a low electrolyte/sulfur ratio (8.4 μL mg-1) and high sulfur loading (4.85 mg cm-2). The outstanding electrochemical performances can be attributed to the strong adsorption and fast conversion of Li polysulfides on the highly dense active sites of Ni@NNC. This intriguing work provides new inspirations for designing high-loading single-atom catalysts applied in Li-S batteries.
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Affiliation(s)
- Hao Sun
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Xin Li
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Taiqiang Chen
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Shuixin Xia
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Tao Yuan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Junhe Yang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yuepeng Pang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Shiyou Zheng
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
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Li H, Fan Y, Sun Z, Zhang H, Zhu Y, Ni SQ, Wang W, Tung CH, Wang Y. Abrading-Induced Breakdown of Ag Nanoparticles into Atomically Dispersed Ag for Enhancing Antimicrobial Performance. Environ Sci Technol 2023; 57:6150-6158. [PMID: 37010425 DOI: 10.1021/acs.est.3c01200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Silver is among the most essential antimicrobial agents. Increasing the efficacy of silver-based antimicrobial materials will reduce operating costs. Herein, we show that mechanical abrading causes atomization of Ag nanoparticles (AgNPs) into atomically dispersed Ag (AgSAs) on the surfaces of an oxide-mineral support, which eventually boosts the antibacterial efficacy considerably. This approach is straightforward, scalable, and applicable to a wide range of oxide-mineral supports; additionally, it does not require any chemical additives and operates under ambient conditions. The obtained AgSAs-loaded γ-Al2O3 inactivated Escherichia coli (E. coli) five times as fast as the original AgNPs-loaded γ-Al2O3. It can be utilized over 10 runs with minimal efficiency loss. The structural characterizations indicate that AgSAs exhibit a nominal charge of 0 and are anchored at the doubly bridging OH on the γ-Al2O3 surfaces. Mechanism studies demonstrate that AgSAs, like AgNPs, damage bacterial cell wall integrity, but they release Ag+ and superoxide substantially faster. This work not only provides a simple method for manufacturing AgSAs-based materials but also shows that AgSAs have better antibacterial properties than the AgNPs counterpart.
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Affiliation(s)
- Haibin Li
- Key Lab for Colloid and Interface Science of Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Yafei Fan
- Key Lab for Colloid and Interface Science of Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Zhaoli Sun
- Key Lab for Colloid and Interface Science of Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Hongqian Zhang
- Key Lab for Colloid and Interface Science of Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Yuxin Zhu
- Key Lab for Colloid and Interface Science of Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Shou-Qing Ni
- Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Wanjun Wang
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Chen-Ho Tung
- Key Lab for Colloid and Interface Science of Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Yifeng Wang
- Key Lab for Colloid and Interface Science of Ministry of Education, School of Chemistry and Chemical Engineering, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
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Hao J, Zhu H, Zhuang Z, Zhao Q, Yu R, Hao J, Kang Q, Lu S, Wang X, Wu J, Wang D, Du M. Competitive Trapping of Single Atoms onto a Metal Carbide Surface. ACS Nano 2023; 17:6955-6965. [PMID: 36967524 DOI: 10.1021/acsnano.3c00866] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Controlling atomic adjustment of single-atom catalysts (SACs) can directly change its local configuration, regulate the energy barrier of intermediates, and further optimize reaction pathways. Herein, we report an atom manipulating process to synthesize Ni atoms stabilized on vanadium carbide (NiSA-VC) through a nanofiber-medium thermodynamically driven atomic migration strategy. Experimental and theoretical results systematically reveal the tunable migration pathway of Ni atom from Ni nanoparticles to neighboring N-doped carbon (NC) and finally to metal carbide that was obtained by regulating the competitive adsorption energies between VC and NC for capturing Ni atoms. For CO2-to-CO electroreduction, NiSA-VC exhibits an industrial current density of -180 mA cm-2 at -1.0 V vs reversible hydrogen electrode and the highest Faradaic efficiency for CO production (FECO) of 96.8% at -0.4 V vs RHE in a flow cell. Significant electron transfers occurring in NiSA-VC structures contribute to the activation of CO2, facilitate the reaction free energy, regulate *CO desorption as the rate-determining step, and promote the activity and selectivity. This study provides an understanding on how to design powerful SACs for electrocatalysis.
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Affiliation(s)
- Jican Hao
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Han Zhu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Zechao Zhuang
- Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Qi Zhao
- Department of Chemistry, Queen Mary University of London, Mile End Road, London E1 4NS, U.K
| | - Ruohan Yu
- Nanostructure Research Centre, Wuhan University of Technology, Wuhan, 430070 P. R. China
| | - Jiace Hao
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Qi Kang
- Department of Polymer Science and Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Shuanglong Lu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Xiaofan Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
| | - Jinsong Wu
- Nanostructure Research Centre, Wuhan University of Technology, Wuhan, 430070 P. R. China
| | - Dingsheng Wang
- Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Mingliang Du
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
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Yin L, Zhang S, Sun M, Wang S, Huang B, Du Y. Heteroatom-Driven Coordination Fields Altering Single Cerium Atom Sites for Efficient Oxygen Reduction Reaction. Adv Mater 2023:e2302485. [PMID: 37015027 DOI: 10.1002/adma.202302485] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Indexed: 05/26/2023]
Abstract
For current single-atom catalysts (SACs), modulating the coordination environments of rare-earth (RE) single atoms with complex electronic orbital and flexible chemical states is still limited. Herein, cerium (Ce) SAs supported on a P, S, and N co-doped hollow carbon substrate (Ce SAs/PSNC) for the oxygen reduction reaction (ORR) are reported. The as-prepared Ce SAs/PSNC possesses a half-wave potential of 0.90 V, a turnover frequency value of 52.2 s-1 at 0.85 V, and excellent stability for the ORR, which exceeds the commercial Pt/C and most recent SACs. Ce SAs/PSNC-based liquid zinc-air batteries (ZABs) exhibit a high and stable open-circuit voltage of 1.49 V and a maximum power density of 212 mW cm-2 . As the catalyst of the air cathode, it also displays remarkable performance in flexible electronic devices. Theoretical calculations reveal that the introduction of S and P sites induces significant electronic modulations to the Ce SA active sites. The P and S dopings promote the electroactivity of Ce SAs and improve the overall site-to-site electron transfer within the Ce SAs/PSNC. This work offers a unique perspective for modulating RE-based SACs in a complex coordination environment toward superior electrocatalysis and broad applications in energy conversion and storage devices.
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Affiliation(s)
- Leilei Yin
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, Haihe Laboratory of Sustainable Chemical Transformations, Smart Sensing Interdisciplinary Science Center, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China
| | - Shuai Zhang
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, Haihe Laboratory of Sustainable Chemical Transformations, Smart Sensing Interdisciplinary Science Center, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China
| | - Mingzi Sun
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, 999077, China
| | - Siyuan Wang
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, Haihe Laboratory of Sustainable Chemical Transformations, Smart Sensing Interdisciplinary Science Center, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China
| | - Bolong Huang
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, 999077, China
- Research Centre for Carbon-Strategic Catalysis, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, 999077, China
| | - Yaping Du
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, Haihe Laboratory of Sustainable Chemical Transformations, Smart Sensing Interdisciplinary Science Center, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China
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Abstract
Macrocycles with well-defined cavities and the ability to undergo supramolecular interactions are classical materials that have played an essential role in materials science. However, one of the most substantial barriers limiting the utilization of macrocycles is their aggregation, which blocks the active regions. Among many attempted strategies to prevent such aggregation, installing macrocycles into covalent organic frameworks (COFs), which are porous and stable reticular networks, has emerged as an ideal solution. The resulting macrocycle-based COFs (M-COFs) preserve the macrocycles' unique activities, enabling applications in various fields such as single-atom catalysis, adsorption/separation, optoelectronics, phototherapy, and structural design of forming single-layered or mechanically interlocked COFs. The resulting properties are unmatchable by any combination of macrocycles with other substrates, opening a new chapter in advanced materials. This review focuses on the latest progress in the concepts, synthesis, properties, and applications of M-COFs, and presents an in-depth outlook on the challenges and opportunities in this emerging field.
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Affiliation(s)
- Yufei Yuan
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, China
| | - Ki-Taek Bang
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, China
| | - Rui Wang
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, China
| | - Yoonseob Kim
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong SAR, China
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Wang X, Wu X, Ma W, Zhou X, Zhang S, Huang D, Winter LR, Kim JH, Elimelech M. Free-standing membrane incorporating single-atom catalysts for ultrafast electroreduction of low-concentration nitrate. Proc Natl Acad Sci U S A 2023; 120:e2217703120. [PMID: 36877847 DOI: 10.1073/pnas.2217703120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023] Open
Abstract
The release of wastewaters containing relatively low levels of nitrate (NO3-) results in sufficient contamination to induce harmful algal blooms and to elevate drinking water NO3- concentrations to potentially hazardous levels. In particular, the facile triggering of algal blooms by ultra-low concentrations of NO3- necessitates the development of efficient methods for NO3- destruction. However, promising electrochemical methods suffer from weak mass transport under low reactant concentrations, resulting in long treatment times (on the order of hours) for complete NO3- destruction. In this study, we present flow-through electrofiltration via an electrified membrane incorporating nonprecious metal single-atom catalysts for NO3- reduction activity enhancement and selectivity modification, achieving near-complete removal of ultra-low concentration NO3- (10 mg-N L-1) with a residence time of only a few seconds (10 s). By anchoring Cu single atoms supported on N-doped carbon in a carbon nanotube interwoven framework, we fabricate a free-standing carbonaceous membrane featuring high conductivity, permeability, and flexibility. The membrane achieves over 97% NO3- removal with high N2 selectivity of 86% in a single-pass electrofiltration, which is a significant improvement over flow-by operation (30% NO3- removal with 7% N2 selectivity). This high NO3- reduction performance is attributed to the greater adsorption and transport of nitric oxide under high molecular collision frequency coupled with a balanced supply of atomic hydrogen through H2 dissociation during electrofiltration. Overall, our findings provide a paradigm of applying a flow-through electrified membrane incorporating single-atom catalysts to improve the rate and selectivity of NO3- reduction for efficient water purification.
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Huang D, Rigby K, Chen W, Wu X, Niu J, Stavitski E, Kim JH. Enhancing the activity of Pd ensembles on graphene by manipulating coordination environment. Proc Natl Acad Sci U S A 2023; 120:e2216879120. [PMID: 36802414 PMCID: PMC9992819 DOI: 10.1073/pnas.2216879120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 12/28/2022] [Indexed: 02/23/2023] Open
Abstract
Atomic dispersion of metal catalysts on a substrate accounts for the increased atomic efficiency of single-atom catalysts (SACs) in various catalytic schemes compared to the nanoparticle counterparts. However, lacking neighboring metal sites has been shown to deteriorate the catalytic performance of SACs in a few industrially important reactions, such as dehalogenation, CO oxidation, and hydrogenation. Metal ensemble catalysts (Mn), an extended concept to SACs, have emerged as a promising alternative to overcome such limitation. Inspired by the fact that the performance of fully isolated SACs can be enhanced by tailoring their coordination environment (CE), we here evaluate whether the CE of Mn can also be manipulated in order to enhance their catalytic activity. We synthesized a set of Pd ensembles (Pdn) on doped graphene supports (Pdn/X-graphene where X = O, S, B, and N). We found that introducing S and N onto oxidized graphene modifies the first shell of Pdn converting Pd-O to Pd-S and Pd-N, respectively. We further found that the B dopant significantly affected the electronic structure of Pdn by serving as an electron donor in the second shell. We examined the performance of Pdn/X-graphene toward selective reductive catalysis, such as bromate reduction, brominated organic hydrogenation, and aqueous-phase CO2 reduction. We observed that Pdn/N-graphene exhibited superior performance by lowering the activation energy of the rate-limiting step, i.e., H2 dissociation into atomic hydrogen. The results collectively suggest controlling the CE of SACs in an ensemble configuration is a viable strategy to optimize and enhance their catalytic performance.
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Affiliation(s)
- Dahong Huang
- College of Environmental Science and Engineering, North China Electric Power University, Beijing102206, China
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT06520
| | - Kali Rigby
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT06520
| | - Weirui Chen
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou510006, China
| | - Xuanhao Wu
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT06520
| | - Junfeng Niu
- College of Environmental Science and Engineering, North China Electric Power University, Beijing102206, China
| | - Eli Stavitski
- National Synchrotron Light Source-II, Brookhaven National Laboratory, Upton, NY11973
| | - Jae-Hong Kim
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT06520
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Jiang Y, Mao K, Li J, Duan D, Li J, Wang X, Zhong Y, Zhang C, Liu H, Gong W, Long R, Xiong Y. Pushing the Performance Limit of Cu/CeO 2 Catalyst in CO 2 Electroreduction: A Cluster Model Study for Loading Single Atoms. ACS Nano 2023; 17:2620-2628. [PMID: 36715316 DOI: 10.1021/acsnano.2c10534] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Pushing the performance limit of catalysts is a major goal of CO2 electroreduction toward practical application. A single-atom catalyst is recognized as a solution for achieving this goal, which is, however, a double-edged sword considering the limited loading amount and stability of single-atom sites. To overcome the limit, the loading of single atoms on supports should be well addressed, requiring a suitable model system. Herein, we report the model system of an ultrasmall CeO2 cluster (2.4 nm) with an atomic precise structure and a high surface-to-volume ratio for loading Cu single atoms. The combination of multiple characterizations and theoretical calculations reveals the loading location and limit of Cu single atoms on CeO2 clusters, determining an optimal configuration for CO2 electroreduction. The optimal catalyst achieves a maximum Faradaic efficiency (FE) of 67% and a maximum partial current density of -364 mA/cm2 for CH4, and can maintain high CH4 FE values over 50% in a wide range of applied current densities (-50 ∼ -600 mA/cm2), exceeding those of the reported catalysts.
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Affiliation(s)
- Yawen Jiang
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui230026, China
- Institute of Energy, Hefei Comprehensive National Science Center, Hefei, Anhui230031, China
| | - Keke Mao
- School of Energy and Environment Science, Anhui University of Technology, Maanshan, Anhui243032, China
| | - Jiawei Li
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui230026, China
| | - Delong Duan
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui230026, China
| | - Jiayi Li
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui230026, China
| | - Xinyu Wang
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui230026, China
| | - Yuan Zhong
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui230026, China
| | - Chao Zhang
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui230026, China
| | - Hengjie Liu
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui230026, China
| | - Wanbing Gong
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui230026, China
| | - Ran Long
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui230026, China
| | - Yujie Xiong
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui230026, China
- Institute of Energy, Hefei Comprehensive National Science Center, Hefei, Anhui230031, China
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Liu X, He Q, Liu J, Yu R, Zhang Y, Zhao Y, Xu X, Mai L, Zhou L. Dual Single-Atom Moieties Anchored on N-Doped Multilayer Graphene As a Catalytic Host for Lithium-Sulfur Batteries. ACS Appl Mater Interfaces 2023; 15:9439-9446. [PMID: 36757864 DOI: 10.1021/acsami.2c21620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Lithium-sulfur (Li-S) batteries are promising for energy storage, especially in the era of carbon neutrality. Nonetheless, the sluggish kinetics of converting soluble lithium polysulfides into solid lithium sulfide impedes its development. In this work, we design Fe and Co dual single-atom moieties anchored on N-doped multilayer graphene (FeCoNGr) as a catalytic sulfur cathode host for Li-S batteries. With an efficient catalytic role in converting soluble lithium polysulfides into solid Li2S, the FeCoNGr-based Li-S cell demonstrates a capacity of 878.7 mA h g-1 at 0.2 C and retains 77.4% of the initial value after 100 cycles. The first and retained capacities are ∼1.7 and ∼1.8 times those of the NGr (without single atoms)-based cell, respectively. Theoretical calculations reveal that the Fe-N4 moiety has a higher binding energy toward low-order lithium polysulfides, while the Co-N4 moiety has a higher binding energy toward high-order lithium polysulfides. The efficient catalytic conversion of soluble lithium polysulfides into solid lithium sulfides of FeCoNGr plays important roles in outperforming NGr. This work enhances our knowledge on the tandem role of dual single-atom moieties and confirmed the high catalytic efficiency of single-atom catalysts in Li-S batteries.
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Affiliation(s)
- Xue Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Qiu He
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Jinshuai Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Ruohan Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Yuanyuan Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Yan Zhao
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Xu Xu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Liqiang Mai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China
- Hubei Longzhong Laboratory, Wuhan University of Technology (Xiangyang Demonstration Zone), Xiangyang, Hubei 441000, China
| | - Liang Zhou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China
- Hubei Longzhong Laboratory, Wuhan University of Technology (Xiangyang Demonstration Zone), Xiangyang, Hubei 441000, China
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38
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Zhou L, He S, Xu X, Li G, Jia C. Potassium Titanate Supported Atomically Dispersed Palladium for Catalytic Oxidation. Adv Sci (Weinh) 2023; 10:e2204674. [PMID: 36285681 PMCID: PMC9839854 DOI: 10.1002/advs.202204674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 10/04/2022] [Indexed: 06/16/2023]
Abstract
Single-atom catalysts based on noble metals provide efficient atomic utilization along with enhanced reactivity. Herein, a convenient strategy to construct atomically dispersed palladium catalyst on layered potassium titanate (KTO), which has enhanced interaction between the TiO6 layer and the palladium atoms, is presented. Due to the presence of K+ ions in the interlayers of KTO, the TiO6 octahedron layers have negative charge, which increases the interaction between Pd atoms and the substrate, thus preventing their agglomeration. In addition, the provision of charge of K+ ion makes the molecular oxygen in the system easier to be activated and promotes catalytic oxidation activity.
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Affiliation(s)
- Li Zhou
- Center of Single‐Molecule SciencesInstitute of Modern OpticsTianjin Key Laboratory of Micro‐scale Optical Information Science and TechnologyFrontiers Science Center for New Organic MatterCollege of Electronic Information and Optical EngineeringNankai University38 Tongyan Road, Jinnan DistrictTianjin300350P. R. China
| | - Shuren He
- School of Chemistry and Chemical EngineeringShandong University27 Shanda Nan Road, Licheng DistrictJinanShandong250100P. R. China
| | - Xiaohong Xu
- School of Chemistry and Chemical EngineeringShandong University27 Shanda Nan Road, Licheng DistrictJinanShandong250100P. R. China
| | - Guangwu Li
- Center of Single‐Molecule SciencesInstitute of Modern OpticsTianjin Key Laboratory of Micro‐scale Optical Information Science and TechnologyFrontiers Science Center for New Organic MatterCollege of Electronic Information and Optical EngineeringNankai University38 Tongyan Road, Jinnan DistrictTianjin300350P. R. China
| | - Chuancheng Jia
- Center of Single‐Molecule SciencesInstitute of Modern OpticsTianjin Key Laboratory of Micro‐scale Optical Information Science and TechnologyFrontiers Science Center for New Organic MatterCollege of Electronic Information and Optical EngineeringNankai University38 Tongyan Road, Jinnan DistrictTianjin300350P. R. China
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Pu T, Ding J, Tang X, Yang K, Wang K, Huang B, Dai S, He Y, Shi Y, Xie P. Rational Design of Precious-Metal Single-Atom Catalysts for Methane Combustion. ACS Appl Mater Interfaces 2022; 14:43141-43150. [PMID: 36111426 DOI: 10.1021/acsami.2c09347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Supported precious-metal single-atom catalysts (PM SACs) have emerged as a new frontier of high-performance catalytic material with 100% atom utilization efficiency. However, the rational design of such material with guidance from fundamental understandings of the structure-activity relationship remains challenging. Here, we report the synthesis, characterizations, and mechanistic investigation of various PM SACs supported on nanoceria for CH4 combustion. Using density functional theory, two descriptors as the d-band center of PMs and oxygen vacancy formation energy are established, which jointly govern the reactivity for CH4 combustion. These descriptors are thus applied to predict a dual SAC consisting of proximate Pd and Rh sites, demonstrating a remarkable improvement versus Pd or Rh catalyst, respectively. Our results reveal the general strategy of integrating experimental and computational efforts for investigation of various PM SACs in methane combustion, thus paving the way for the next generation of advanced catalytic materials.
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Affiliation(s)
- Tiancheng Pu
- College of Chemical and Biological Engineering, Zhejiang University, 148 Tianmushan Road, Hangzhou 310027, People's Republic of China
| | - Jiaqi Ding
- College of Chemical and Biological Engineering, Zhejiang University, 148 Tianmushan Road, Hangzhou 310027, People's Republic of China
| | - Xuan Tang
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Kewu Yang
- College of Chemical and Biological Engineering, Zhejiang University, 148 Tianmushan Road, Hangzhou 310027, People's Republic of China
| | - Ke Wang
- College of Chemical and Biological Engineering, Zhejiang University, 148 Tianmushan Road, Hangzhou 310027, People's Republic of China
| | - Bei Huang
- College of Chemical and Biological Engineering, Zhejiang University, 148 Tianmushan Road, Hangzhou 310027, People's Republic of China
| | - Sheng Dai
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | - Yi He
- College of Chemical and Biological Engineering, Zhejiang University, 148 Tianmushan Road, Hangzhou 310027, People's Republic of China
- Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Yao Shi
- College of Chemical and Biological Engineering, Zhejiang University, 148 Tianmushan Road, Hangzhou 310027, People's Republic of China
| | - Pengfei Xie
- College of Chemical and Biological Engineering, Zhejiang University, 148 Tianmushan Road, Hangzhou 310027, People's Republic of China
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Zhao S, Tang X, Li J, Zhang J, Yuan D, Ma D, Ju L. Improving the Energetic Stability and Electrocatalytic Performance of Au/WSSe Single-Atom Catalyst with Tensile Strain. Nanomaterials (Basel) 2022; 12:2793. [PMID: 36014659 PMCID: PMC9414615 DOI: 10.3390/nano12162793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
In the areas of catalysis and renewable energy conversion, the development of active and stable electrocatalysts continues to be a highly desirable and crucial aim. Single-atom catalysts (SACs) provide isolated active sites, high selectivity, and ease of separation from reaction systems, becoming a rapidly evolving research field. Unfortunately, the real roles and key factors of the supports that govern the catalytic properties of SACs remain uncertain. Herein, by means of the density functional theory calculations, in the Au/WSSe SAC, built by filling the single Au atom at the S vacancy site in WSSe monolayer, we find that the powerful binding between the single Au atom and the support is induced by the Au d and W d orbital hybridization, which is caused by the electron transfer between them. The extra tensile strain could further stabilize the Au/WSSe by raising the transfer electron and enhancing the orbital hybridization. Moreover, by dint of regulating the antibonding strength between the single Au atom and H atom, the extra tensile strain is capable of changing the electric-catalytic hydrogen evolution reaction (HER) performance of Au/WSSe as well. Remarkably, under the 1% tensile strain, the reaction barrier (0.06 eV) is only one third of that of free state. This theoretical work not only reveals the bonding between atomic sites and supports, but also opens an avenue to improve the electric-catalytic performance of SACs by adjusting the bonding with outer factors.
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Affiliation(s)
- Shutao Zhao
- Key Laboratory of Functional Materials and Devices for Informatics of Anhui Higher Education Institutes, School of Physics and Electronic Science, Fuyang Normal University, Fuyang 236037, China
| | - Xiao Tang
- College of Science, Institute of Materials Physics and Chemistry, Nanjing Forestry University, Nanjing 210037, China
| | - Jingli Li
- School of Physics and Electrical Engineering, Anyang Normal University, Anyang 455000, China
| | - Jing Zhang
- School of Physics and Electrical Engineering, Anyang Normal University, Anyang 455000, China
| | - Di Yuan
- School of Physics and Electrical Engineering, Anyang Normal University, Anyang 455000, China
| | - Dongwei Ma
- Key Laboratory for Special Functional Materials of Ministry of Education, School of Materials Science and Engineering, Henan University, Kaifeng 475004, China
| | - Lin Ju
- School of Physics and Electrical Engineering, Anyang Normal University, Anyang 455000, China
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Zhang Y, Cao X, Cao Z. Unraveling the Catalytic Performance of the Nonprecious Metal Single-Atom-Embedded Graphitic s-Triazine-Based C 3N 4 for CO 2 Hydrogenation. ACS Appl Mater Interfaces 2022; 14:35844-35853. [PMID: 35904900 DOI: 10.1021/acsami.2c09813] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Graphitic carbon nitride (g-C3N4) is regarded as a promising potent photoelectrocatalyst for CO2 reduction. Here, extensive first-principles calculations and ab initio molecular dynamics (AIMD) simulations are performed to systematically explore the structural and electronic properties of nonprecious metal single-atom-embedded graphitic s-triazine-based C3N4 (M@gt-C3N4, M = Mn, Fe, Co, Ni, Cu, and Mo) monolayer materials and their catalytic performances as the single-atom catalysts (SACs) for CO2 hydrogenation to HCOOH, CO, and CH3OH. It is found that the atomically dispersed non-noble metal Mn, Fe, Co, and Mo sites anchored on gt-C3N4 can efficiently activate both H2 and CO2, and their coadsorbed state serves as a precursor to the hydrogenation of CO2 to different C1 products. Among these SACs (M@gt-C3N4, M = Mn, Fe, Co, and Mo), Co@gt-C3N4 was predicted to have the best catalytic performance for CO2 hydrogenation to C1 products, although their mechanistic details are somewhat different. The predicted energy barriers of the rate-determining steps for the conversion of CO2 into HCOOH, CO, and CH3OH on Co@gt-C3N4 are 0.58, 0.67, and 1.19 eV, respectively. The desorption of products is generally energy-demanding, but it can be facilitated remarkably by the subsequent adsorption of H2, which regenerates M@gt-C3N4 for the next catalytic cycle. The present study demonstrates that the catalytic performance of gt-C3N4 can be well regulated by embedding the non-noble metal single atom, and the porous gt-C3N4 is nicely suited for the construction of high-performance single-atom catalysts.
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Affiliation(s)
- Yue Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Xinrui Cao
- Department of Physics and Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Xiamen University, Xiamen 361005, China
| | - Zexing Cao
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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42
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Shi Y, Zhou Y, Lou Y, Chen Z, Xiong H, Zhu Y. Homogeneity of Supported Single-Atom Active Sites Boosting the Selective Catalytic Transformations. Adv Sci (Weinh) 2022; 9:e2201520. [PMID: 35808964 PMCID: PMC9404403 DOI: 10.1002/advs.202201520] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 05/31/2022] [Indexed: 05/09/2023]
Abstract
Selective conversion of specific functional groups to desired products is highly important but still challenging in industrial catalytic processes. The adsorption state of surface species is the key factor in modulating the conversion of functional groups, which is correspondingly determined by the uniformity of active sites. However, the non-identical number of metal atoms, geometric shape, and morphology of conventional nanometer-sized metal particles/clusters normally lead to the non-uniform active sites with diverse geometric configurations and local coordination environments, which causes the distinct adsorption states of surface species. Hence, it is highly desired to modulate the homogeneity of the active sites so that the catalytic transformations can be better confined to the desired direction. In this review, the construction strategies and characterization techniques of the uniform active sites that are atomically dispersed on various supports are examined. In particular, their unique behavior in boosting the catalytic performance in various chemical transformations is discussed, including selective hydrogenation, selective oxidation, Suzuki coupling, and other catalytic reactions. In addition, the dynamic evolution of the active sites under reaction conditions and the industrial utilization of the single-atom catalysts are highlighted. Finally, the current challenges and frontiers are identified, and the perspectives on this flourishing field is provided.
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Affiliation(s)
- Yujie Shi
- Key Laboratory of Synthetic and Biological ColloidsMinistry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxiJiangsu214122P. R. China
- International Joint Research Center for Photoresponsive Molecules and MaterialsJiangnan UniversityWuxiJiangsu214122P. R. China
| | - Yuwei Zhou
- Key Laboratory of Synthetic and Biological ColloidsMinistry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxiJiangsu214122P. R. China
- International Joint Research Center for Photoresponsive Molecules and MaterialsJiangnan UniversityWuxiJiangsu214122P. R. China
| | - Yang Lou
- Key Laboratory of Synthetic and Biological ColloidsMinistry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxiJiangsu214122P. R. China
- International Joint Research Center for Photoresponsive Molecules and MaterialsJiangnan UniversityWuxiJiangsu214122P. R. China
| | - Zupeng Chen
- College of Chemical EngineeringNanjing Forestry UniversityNanjing210037P. R. China
| | - Haifeng Xiong
- College of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005P. R. China
| | - Yongfa Zhu
- Department of ChemistryTsinghua UniversityBeijing100084P. R. China
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43
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Li J, Li M, An N, Zhang S, Song Q, Yang Y, Li J, Liu X. Boosted ammonium production by single cobalt atom catalysts with high Faradic efficiencies. Proc Natl Acad Sci U S A 2022; 119:e2123450119. [PMID: 35858301 DOI: 10.1073/pnas.2123450119] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Efficient n = O bond activation is crucial for the catalytic reduction of nitrogen compounds, which is highly affected by the construction of active centers. In this study, n = O bond activation was achieved by a single-atom catalyst (SAC) with phosphorus anchored on a Co active center to form intermediate N-species for further hydrogenation and reduction. Unique phosphorus-doped discontinuous active sites exhibit better n = O activation performance than conventional N-cooperated single-atom sites, with a high Faradic efficiency of 92.0% and a maximum ammonia yield rate of 433.3 μg NH4·h-1·cm-2. This approach of constructing environmental sites through heteroatom modification significantly improves atom efficiency and will guide the design of future functional SACs with wide-ranging applications.
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Zhang L, Li Y, Zhang L, Wang K, Li Y, Wang L, Zhang X, Yang F, Zheng Z. Direct Visualization of the Evolution of a Single-Atomic Cobalt Catalyst from Melting Nanoparticles with Carbon Dissolution. Adv Sci (Weinh) 2022; 9:e2200592. [PMID: 35508897 PMCID: PMC9284138 DOI: 10.1002/advs.202200592] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 04/14/2022] [Indexed: 05/11/2023]
Abstract
Transition metal single-atom catalysts (SACs) are of immense interest, but how exactly they are evolved upon pyrolysis of the corresponding precursors remains unclear as transition metal ions in the complex precursor undergo a series of morphological changes accompanied with changes in oxidation state as a result of the interactions with the carbon support. Herein, the authors record the complete evolution process of Co SAC during the pyrolysis a Co/Zn-containing zeolitic imidazolate framework. Aberration-corrected environmental TEM coupled with in-situ EELS is used for direct visualization of the evolution process at 200-1000 °C. Dissolution of carbon into the nanoparticles of Co is found to be key to modulating the wetting behavior of nanoparticles on the carbon support; melting of Co nanoparticles and their motion within the zeolitic architecture leads to the etching of the framework structure, yielding porous C/N support onto which Co-single atoms reside. This uniquely structured Co SAC is found to be effective for the oxidation of a series of aromatic alkanes to produce selective ketones among other possible products. The carbon dissolution and melting/sublimation-driven structural dynamics of transition metal revealed here will expand the methodology in synthesizing SACs and other high-temperature processes.
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Affiliation(s)
- Luyao Zhang
- Department of ChemistryGuangdong Provincial Key Laboratory of CatalysisGuangdong Provincial Key Laboratory of Energy Materials for Electric PowerKey Laboratory of Energy Conversion and Storage Technologies (Ministry of Education)Southern University of Science and TechnologyShenzhen518055China
| | - Yanyan Li
- Department of ChemistryGuangdong Provincial Key Laboratory of CatalysisGuangdong Provincial Key Laboratory of Energy Materials for Electric PowerKey Laboratory of Energy Conversion and Storage Technologies (Ministry of Education)Southern University of Science and TechnologyShenzhen518055China
| | - Lei Zhang
- Department of ChemistryGuangdong Provincial Key Laboratory of CatalysisGuangdong Provincial Key Laboratory of Energy Materials for Electric PowerKey Laboratory of Energy Conversion and Storage Technologies (Ministry of Education)Southern University of Science and TechnologyShenzhen518055China
| | - Kun Wang
- Department of ChemistryGuangdong Provincial Key Laboratory of CatalysisGuangdong Provincial Key Laboratory of Energy Materials for Electric PowerKey Laboratory of Energy Conversion and Storage Technologies (Ministry of Education)Southern University of Science and TechnologyShenzhen518055China
| | - Yingbo Li
- Department of ChemistryGuangdong Provincial Key Laboratory of CatalysisGuangdong Provincial Key Laboratory of Energy Materials for Electric PowerKey Laboratory of Energy Conversion and Storage Technologies (Ministry of Education)Southern University of Science and TechnologyShenzhen518055China
| | - Lei Wang
- Department of ChemistryGuangdong Provincial Key Laboratory of CatalysisGuangdong Provincial Key Laboratory of Energy Materials for Electric PowerKey Laboratory of Energy Conversion and Storage Technologies (Ministry of Education)Southern University of Science and TechnologyShenzhen518055China
| | - Xinyu Zhang
- Department of ChemistryGuangdong Provincial Key Laboratory of CatalysisGuangdong Provincial Key Laboratory of Energy Materials for Electric PowerKey Laboratory of Energy Conversion and Storage Technologies (Ministry of Education)Southern University of Science and TechnologyShenzhen518055China
| | - Feng Yang
- Department of ChemistryGuangdong Provincial Key Laboratory of CatalysisGuangdong Provincial Key Laboratory of Energy Materials for Electric PowerKey Laboratory of Energy Conversion and Storage Technologies (Ministry of Education)Southern University of Science and TechnologyShenzhen518055China
| | - Zhiping Zheng
- Department of ChemistryGuangdong Provincial Key Laboratory of CatalysisGuangdong Provincial Key Laboratory of Energy Materials for Electric PowerKey Laboratory of Energy Conversion and Storage Technologies (Ministry of Education)Southern University of Science and TechnologyShenzhen518055China
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Cui P, Liu C, Su X, Yang Q, Ge L, Huang M, Dang F, Wu T, Wang Y. Atomically Dispersed Manganese on Biochar Derived from a Hyperaccumulator for Photocatalysis in Organic Pollution Remediation. Environ Sci Technol 2022; 56:8034-8042. [PMID: 35584092 DOI: 10.1021/acs.est.2c00992] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Phytoremediation is a potentially cost-effective and environmentally friendly remediation method for environmental pollution. However, the safe treatment and resource utilization of harvested biomass has become a limitation in practical applications. To address this, a novel manganese-carbon-based single-atom catalyst (SAC) method has been developed based on the pyrolysis of a manganese hyperaccumulator, Phytolacca americana. In this method, manganese atoms are dispersed atomically in the carbon matrix and coordinate with N atoms to form a Mn-N4 structure. The SAC developed exhibited a high photooxidation efficiency and excellent stability during the degradation of a common organic pollutant, rhodamine B. The Mn-N4 site was the active center in the transformation of photoelectrons via the transfer of photoelectrons between adsorbed O2 and Mn to produce reactive oxygen species, identified by in situ X-ray absorption fine structure spectroscopy and density functional theory calculations. This work demonstrates an approach that increases potential utilization of biomass during phytoremediation and provides a promising design strategy to synthesize cost-effective SACs for environmental applications.
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Affiliation(s)
- Peixin Cui
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
| | - Cun Liu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
| | - Xiaozhi Su
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, PR China
| | - Qiang Yang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
- University of Chinese Academy of Science, Beijing 100049, PR China
| | - Liqiang Ge
- Technical Innovation Center of Ecological Monitoring & Restoration Project on Land (Arable), Ministry of Natural Resources, Geological Survey of Jiangsu Province, Nanjing 210018, PR China
| | - Meiying Huang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
- University of Chinese Academy of Science, Beijing 100049, PR China
| | - Fei Dang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
| | - Tongliang Wu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
| | - Yujun Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
- University of Chinese Academy of Science, Beijing 100049, PR China
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46
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Chen Z, Liu J, Koh MJ, Loh KP. Single-Atom Catalysis: From Simple Reactions to the Synthesis of Complex Molecules. Adv Mater 2022; 34:e2103882. [PMID: 34510576 DOI: 10.1002/adma.202103882] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 06/19/2021] [Indexed: 06/13/2023]
Abstract
To date, the scope of single-atom catalysts (SAC) in liquid-phase transformations is rather limited owing to stability issues and the inability to activate complex substances. This calls for a better design of the catalyst support that can provide a dynamic coordination environment needed for catalytic action, and yet retain robustness against leaching or aggregation. In addition, the chemical orthogonality of SAC is useful for designing tandem or multicomponent reactions, in which side reactions common to metal nanoparticles are suppressed. In this review, the intrinsic mechanism will be highlighted that controls reaction efficiency and selectivity in SAC-catalyzed pathways, as well as the structural dynamism of SAC under complex liquid-phase conditions. These mechanistic insights are helpful for the development of next-generation SAC systems for the synthesis of high-value pharmaceuticals through late-stage functionalization, sequential and multicomponent strategies.
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Affiliation(s)
- Zhongxin Chen
- Department of Chemistry, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Jia Liu
- Department of Chemistry, 3 Science Drive 3, Singapore, 117543, Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China
| | - Ming Joo Koh
- Department of Chemistry, 3 Science Drive 3, Singapore, 117543, Singapore
| | - Kian Ping Loh
- Department of Chemistry, 3 Science Drive 3, Singapore, 117543, Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China
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47
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He Q, Qiao S, Zhou Q, Zhou Y, Shou H, Zhang P, Xu W, Liu D, Chen S, Wu X, Song L. Confining High-Valence Iridium Single Sites onto Nickel Oxyhydroxide for Robust Oxygen Evolution. Nano Lett 2022; 22:3832-3839. [PMID: 35451305 DOI: 10.1021/acs.nanolett.2c01124] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Enhancing activity and stability of iridium- (Ir-) based oxygen evolution reaction (OER) catalysts is of great significance in practice. Here, we report a vacancy-rich nickel hydroxide stabilized Ir single-atom catalyst (Ir1-Ni(OH)2), which achieves long-term OER stability over 260 h and much higher mass activity than commercial IrO2 in alkaline media. In situ X-ray absorption spectroscopy analysis certifies the obvious structure reconstruction of catalyst in OER. As a result, an active structure in which high-valence and peripheral oxygen ligands-rich Ir sites are confined onto the nickel oxyhydroxide surface is formed. In addition, the precise introduction of atomized Ir not only surmounts the large-range dissolution and agglomeration of Ir but also suppresses the dissolution of substrate in OER. Theoretical calculations further account for the activation of Ir single atoms and the promotion of oxygen generation by high-valence Ir, and they reveal that the deprotonation process of adsorbed OH is rate-determining.
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Affiliation(s)
- Qun He
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Sicong Qiao
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Quan Zhou
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Yuzhu Zhou
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Hongwei Shou
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, P. R. China
- School of Chemistry and Materials Sciences, Collaborative Innovation of Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei 230026, P. R. China
| | - Pengjun Zhang
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Wenjie Xu
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Daobin Liu
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Shuangming Chen
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Xiaojun Wu
- School of Chemistry and Materials Sciences, Collaborative Innovation of Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei 230026, P. R. China
| | - Li Song
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, P. R. China
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48
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Liu X, Li C, Xu F, Fan G, Xu H. Density functional theory study of nitrogen-doped black phosphorene doped with monatomic transition metals as high performance electrocatalysts for N 2reduction reaction. Nanotechnology 2022; 33:245401. [PMID: 35226886 DOI: 10.1088/1361-6528/ac5929] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 02/28/2022] [Indexed: 06/14/2023]
Abstract
Ammonia (NH3) is an essential resource in human production and living activities, and its demand has been rising in recent years. The catalytic synthesis of NH3from N2under mild conditions, inspired by biological nitrogen fixation, has piqued the interest of researchers. In this paper, density functional theory (DFT) calculations were used to investigate the catalytic activity, mechanism, and selectivity of the TM embedded nitrogen-doped phosphorene as high-performance nitrogen reduction reaction (NRR) electrocatalysts in depth. The results show that Nb- and Mo-doped catalysts present excellent catalytic performance, with low limiting potentials of -0.41 and -0.18 V, respectively. The Mo-N3-BP catalyst, for example, not only has an extremely low overpotential (-0.02 V), but also presents superior selectivity to effectively inhibit the HER competition reaction. A deeper look into the catalytic mechanism reveals a volcano relationship between the d-band center and the catalytic activity (Mo and Nb are located near the peak of the volcano-type curve). The d-band center and charge of the metal center can be regarded as effective descriptors for NRR activity on TM embedded nitrogen-doped phosphorene electrocatalysts, which hope to serve as a guiding principle for the design of high performance NRR single-atom catalyst in the future.
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Affiliation(s)
- Xin Liu
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, People's Republic of China
| | - Chenyin Li
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, People's Republic of China
| | - Fang Xu
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, People's Republic of China
| | - Guohong Fan
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, People's Republic of China
| | - Hong Xu
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, People's Republic of China
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49
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Li K, Zhang S, Zhang X, Liu S, Jiang H, Jiang T, Shen C, Yu Y, Chen W. Atomic Tuning of Single-Atom Fe-N-C Catalysts with Phosphorus for Robust Electrochemical CO 2 Reduction. Nano Lett 2022; 22:1557-1565. [PMID: 35104146 DOI: 10.1021/acs.nanolett.1c04382] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The electrochemical reduction of CO2 to produce carbon-based fuels and chemicals possesses huge potentials to alleviate current environmental problems. However, it is confronted by great challenges in the design of active electrocatalysts with low overpotentials and high product selectivity. Here we report the atomic tuning of a single-Fe-atom catalyst with phosphorus (Fe-N/P-C) on commercial carbon black as a robust electrocatalyst for CO2 reduction. The Fe-N/P-C catalyst exhibits impressive performance in the electrochemical reduction of CO2 to CO, with a high Faradaic efficiency of 98% and a high mass-normalized turnover frequency of 508.8 h-1 at a low overpotential of 0.34 V. On the basis of ex-situ X-ray absorption spectroscopy measurements and DFT calculations, we reveal that the tuning of P in single-Fe-atom catalysts reduces the oxidation state of the Fe center and decreases the free-energy barrier of *CO intermediate formation, consequently maintaining the electrocatalytic activity and stability of single-Fe-atom catalysts.
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Affiliation(s)
- Ke Li
- Department of Applied Chemistry, School of Chemistry and Materials Science, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shengbo Zhang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Xiuli Zhang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Shuang Liu
- Department of Applied Chemistry, School of Chemistry and Materials Science, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Haosong Jiang
- Department of Applied Chemistry, School of Chemistry and Materials Science, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Taoli Jiang
- Department of Applied Chemistry, School of Chemistry and Materials Science, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Chunyue Shen
- Department of Applied Chemistry, School of Chemistry and Materials Science, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yi Yu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Wei Chen
- Department of Applied Chemistry, School of Chemistry and Materials Science, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
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50
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Wu X, Rigby K, Huang D, Hedtke T, Wang X, Chung MW, Weon S, Stavitski E, Kim JH. Single-Atom Cobalt Incorporated in a 2D Graphene Oxide Membrane for Catalytic Pollutant Degradation. Environ Sci Technol 2022; 56:1341-1351. [PMID: 34964609 DOI: 10.1021/acs.est.1c06371] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We introduce a new graphene oxide (GO)-based membrane architecture that hosts cobalt catalysts within its nanoscale pore walls. Such an architecture would not be possible with catalysts in nanoscale, the current benchmark, since they would block the pores or alter the pore structure. Therefore, we developed a new synthesis procedure to load cobalt in an atomically dispersed fashion, the theoretical limit in material downsizing. The use of vitamin C as a mild reducing agent was critical to load Co as dispersed atoms (Co1), preserving the well-stacked 2D structure of GO layers. With the addition of peroxymonosulfate (PMS), the Co1-GO membrane efficiently degraded 1,4-dioxane, a small, neutral pollutant that passes through nanopores in single-pass treatment. The observed 1,4-dioxane degradation kinetics were much faster (>640 times) than the kinetics in suspension and the highest among reported persulfate-based 1,4-dioxane destruction. The capability of the membrane to reject large organic molecules alleviated their effects on radical scavenging. Furthermore, the advanced oxidation also mitigated membrane fouling. The findings of this study present a critical advance toward developing catalytic membranes with which two distinctive and complementary processes, membrane filtration and advanced oxidation, can be combined into a single-step treatment.
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Affiliation(s)
- Xuanhao Wu
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Kali Rigby
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Dahong Huang
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Tayler Hedtke
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Xiaoxiong Wang
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Myoung Won Chung
- School of Health and Environmental Science, Korea University, Seoul 02841, Republic of Korea
| | - Seunghyun Weon
- School of Health and Environmental Science, Korea University, Seoul 02841, Republic of Korea
| | - Eli Stavitski
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Jae-Hong Kim
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
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