1
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Ma T, Li H, Yu Y, Wang K, Yu W, Shang Y, Bai Y, Zhang R, Yang Y, Nie X. Lattice-Confined Single-Atom Catalyst: Preparation, Application and Electron Regulation Mechanism. SMALL METHODS 2024:e2400530. [PMID: 39007247 DOI: 10.1002/smtd.202400530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 07/01/2024] [Indexed: 07/16/2024]
Abstract
Lattice-confined single-atom catalyst (LC SAC), featuring exceptional activity, intriguing stability and prominent selectivity, has attracted extensive attention in the fields of various reactions (e.g., hydrogen evolution reaction (HER), oxygen evolution reaction (OER), oxygen reduction reaction (ORR), etc.). To design a "smart" LC SAC for catalytic applications, one must systematically comprehend updated advances in the preparation, the application, and especially the peculiar electron regulation mechanism of LC SAC. In this review, the specific preparation methods of LC SAC based on general coordination strategy are updated, and its applications in HER, OER, ORR, N2 reduction reaction (NRR), advanced oxidation processes (AOPs) and so forth are summarized to display outstanding activity, stability and selectivity. Uniquely, the electron regulation mechanisms are first and deeply discussed and can be primarily categorized as electron transfer bridge with monometallic active sites, novel catalytic centers with polymetallic active sites, and positive influence by surrounding environments. In the end, the existing issues and future development directions are put forward with a view to further optimize the performance of LC SAC. This review is expected to contribute to the in-depth understanding and practical application of highly efficient LC SAC.
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Affiliation(s)
- Ting Ma
- School of Resources and Civil Engineering, Northeastern University, Shenyang, 110819, China
| | - Haibo Li
- School of Resources and Civil Engineering, Northeastern University, Shenyang, 110819, China
| | - Yanyan Yu
- Yantai Environmental Sanitation Management Center, Yantai, 264000, China
| | - Kaixuan Wang
- School of Resources and Civil Engineering, Northeastern University, Shenyang, 110819, China
| | - Wei Yu
- School of Resources and Civil Engineering, Northeastern University, Shenyang, 110819, China
| | - Yu Shang
- School of Resources and Civil Engineering, Northeastern University, Shenyang, 110819, China
| | - Yilin Bai
- School of Resources and Civil Engineering, Northeastern University, Shenyang, 110819, China
| | - Rongyu Zhang
- School of Resources and Civil Engineering, Northeastern University, Shenyang, 110819, China
| | - Yue Yang
- School of Resources and Civil Engineering, Northeastern University, Shenyang, 110819, China
| | - Xiangqi Nie
- School of Resources and Civil Engineering, Northeastern University, Shenyang, 110819, China
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2
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Wei Y, Miao J, Cui J, Lang J, Rao Q, Zhou B, Long M, Alvarez PJJ. Heteroatom substitution enhances generation and reactivity of surface-activated peroxydisulfate complexes for catalytic fenton-like reactions. JOURNAL OF HAZARDOUS MATERIALS 2024; 467:133753. [PMID: 38350321 DOI: 10.1016/j.jhazmat.2024.133753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/23/2024] [Accepted: 02/06/2024] [Indexed: 02/15/2024]
Abstract
Peroxydisulfate (PDS)-based Fenton-like reactions are promising advanced oxidation processes (AOPs) to degrade recalcitrant organic water pollutants. Current research predominantly focuses on augmenting the generation of reactive species (e.g., surface-activated PDS complexes (PDS*) to improve treatment efficiency, but overlooks the potential benefits of enhancing the reactivity of these species. Here, we enhanced PDS* generation and reactivity by incorporating Zn into CuO catalyst lattice, which resulted in 99% degradation of 4-chlorophenol within only 10 min. Zn increased PDS* generation by nearly doubling PDS adsorption while maintaining similar PDS to PDS* conversion efficiency, and induced higher PDS* reactivity than the common catalyst CuO, as indicated by a 4.1-fold larger slope between adsorbed PDS and open circuit potential of a catalytic electrode. Cu-O-Zn formation upshifts the d-band center of Cu sites and lowers the energy barrier for PDS adsorption and sulfate desorption, resulting in enhanced PDS* generation and reactivity. Overall, this study informs strategies to enhance PDS* reactivity and design highly active catalysts for efficient AOPs.
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Affiliation(s)
- Yan Wei
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jie Miao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jiahao Cui
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Junyu Lang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Qunli Rao
- Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Baoxue Zhou
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Mingce Long
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Pedro J J Alvarez
- Department of Civil and Environmental Engineering, Rice University, Houston, TX 77005, United States.
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3
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Zhao Z, Hu M, Nie T, Zhou W, Pan B, Xing B, Zhu L. Improved Electronic Structure from Spin-State Reconstruction of a Heteronuclear Fe-Co Diatomic Pair to Boost the Fenton-like Reaction. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:4556-4567. [PMID: 36894515 DOI: 10.1021/acs.est.2c09336] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Dual-atom catalysts (DACs) are promising candidates for various catalytic reactions, including electrocatalysis, chemical synthesis, and environmental remediation. However, the high-activity origin and mechanism underlying intrinsic activity enhancement remain elusive, especially for the Fenton-like reaction. Herein, we systematically compared the catalytic performance of dual-atom FeCo-N/C with its single-atom counterparts by activating peroxymonosulfate (PMS) for pollutant abatement. The unusual spin-state reconstruction on FeCo-N/C is demonstrated to effectively improve the electronic structure of Fe and Co in the d orbital and enhance the PMS activation efficiency. Accordingly, the dual-atom FeCo-N/C with an intermediate-spin state remarkably boosts the Fenton-like reaction by almost 1 order of magnitude compared with low-spin Co-N/C and high-spin Fe-N/C. Moreover, the established dual-atom-activated PMS system also exhibits excellent stability and robust resistance against harsh conditions. Combined theoretical calculations reveal that unlike unitary Co atom or Fe atom transferring electrons to the PMS molecule, the Fe atom of FeCo-N/C provides extra electrons to the neighboring Co atom and positively shifts the d band of the Co center, thereby optimizing the PMS adsorption and decomposition into a unique high-valent FeIV-O-CoIV species via a low-energy barrier pathway. This work advances a conceptually novel mechanistic understanding of the enhanced catalytic activity of DACs in Fenton-like reactions and helps to expand the application of DACs in various catalytic reactions.
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Affiliation(s)
- Zhendong Zhao
- State Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Mingzhu Hu
- State Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Tiantian Nie
- Hangzhou Environmental Group, Hangzhou, Zhejiang 310022, China
| | - Wenjun Zhou
- State Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
- Zhejiang Ecological Civilization Academy, Anji, Zhejiang 313300, China
| | - Bingcai Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Lizhong Zhu
- State Key Laboratory of Organic Pollution Process and Control, Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
- Zhejiang Ecological Civilization Academy, Anji, Zhejiang 313300, China
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4
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Cheng C, Ren W, Miao F, Chen X, Chen X, Zhang H. Generation of Fe IV =O and its Contribution to Fenton-Like Reactions on a Single-Atom Iron-N-C Catalyst. Angew Chem Int Ed Engl 2023; 62:e202218510. [PMID: 36625681 DOI: 10.1002/anie.202218510] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/06/2023] [Accepted: 01/10/2023] [Indexed: 01/11/2023]
Abstract
Generating FeIV =O on single-atom catalysts by Fenton-like reaction has been established for water treatment; however, the FeIV =O generation pathway and oxidation behavior remain obscure. Employing an Fe-N-C catalyst with a typical Fe-N4 moiety to activate peroxymonosulfate (PMS), we demonstrate that generating FeIV =O is mediated by an Fe-N-C-PMS* complex-a well-recognized nonradical species for induction of electron-transfer oxidation-and we determined that adjacent Fe sites with a specific Fe1 -Fe1 distance are required. After the Fe atoms with an Fe1 -Fe1 distance <4 Å are PMS-saturated, Fe-N-C-PMS* formed on Fe sites with an Fe1 -Fe1 distance of 4-5 Å can coordinate with the adjacent FeII -N4 , forming an inter-complex with enhanced charge transfer to produce FeIV =O. FeIV =O enables the Fenton-like system to efficiently oxidize various pollutants in a substrate-specific, pH-tolerant, and sustainable manner, where its prominent contribution manifests for pollutants with higher one-electron oxidation potential.
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Affiliation(s)
- Cheng Cheng
- Department of Environmental Science and Engineering, School of Resource and Environmental Sciences, Wuhan University, Wuhan, 430079, China
| | - Wei Ren
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resource Recycle, Nanchang Hangkong University, Nanchang, 330063, China
| | - Fei Miao
- Department of Environmental Science and Engineering, School of Resource and Environmental Sciences, Wuhan University, Wuhan, 430079, China
| | - Xuantong Chen
- Department of Environmental Science and Engineering, School of Resource and Environmental Sciences, Wuhan University, Wuhan, 430079, China
| | - Xiaoxiao Chen
- Department of Environmental Science and Engineering, School of Resource and Environmental Sciences, Wuhan University, Wuhan, 430079, China
| | - Hui Zhang
- Department of Environmental Science and Engineering, School of Resource and Environmental Sciences, Wuhan University, Wuhan, 430079, China
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5
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Li Y, Xu J, Shi G, Yue D. Different crystallographic Ni(OH) 2 as highly efficient Fenton-like catalysts for sulfate radical activation. Chem Commun (Camb) 2023; 59:1341-1344. [PMID: 36647614 DOI: 10.1039/d2cc05989d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
By a simple hydrothermal method, a phase boundary between α- and β-Ni(OH)2 can be obtained. The Fenton-like performance of α@β-Ni(OH)2 is 1.56 times higher than that of single β-Ni(OH). α@β-Ni(OH)2 displays superior stability compared to α-Ni(OH)2, β-Ni(OH)2, and amorphous Ni(OH)2, which makes significant contributions to developing advanced catalysts in diverse fields.
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Affiliation(s)
- Yunzhang Li
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, NO. 99 Shangda Road, Baoshan District, Shanghai 200444, P. R. China.
| | - Jin Xu
- Ecological Environment Sub-bureau of Liangshan, Jining 272600, P. R. China
| | - Guosheng Shi
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, NO. 99 Shangda Road, Baoshan District, Shanghai 200444, P. R. China. .,Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, P. R. China
| | - Dongting Yue
- Shanghai Applied Radiation Institute, State Key Lab. Advanced Special Steel, Shanghai University, NO. 99 Shangda Road, Baoshan District, Shanghai 200444, P. R. China.
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6
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Shi B, Li H, Fu X, Zhao C, Li M, Liu M, Yan W, Yang H. Fe Single-Atom Catalyst for Cost-Effective yet Highly Efficient Heterogeneous Fenton Catalysis. ACS APPLIED MATERIALS & INTERFACES 2022; 14:53767-53776. [PMID: 36409839 DOI: 10.1021/acsami.2c15232] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
High energy consumption in pyrolyzing precursors for catalyst preparation would limit the application of nitrogen-doped carbon-based single-atom catalysts in actual pollutant remediation. Herein, we report an Fe single atom (7.67 wt %) loaded polyaniline catalyst (Fe-PANI) prepared via a simple impregnation process without pyrolysis. Both experimental characterizations and density functional theory calculations demonstrated that isolated -N═ group sites can fasten Fe atoms through Fe-N coordination in PANI, leading to a high stability of Fe atoms in a heterogeneous Fenton reaction. Highly dispersive yet dense -N═ groups in PANI can be protonated to be adsorption sites, which largely reduce the migration distance between reactive radicals and organics. More significantly, frontier molecular orbitals and spin-density distributions reveal that electrons can transfer from reduction groups of PANI to an Fe(III) site to accelerate its reduction. As a result, a remarkably boosted degradation behavior of organics under near-neutral conditions (pH 6), with low H2O2 concentration, was achieved. This cost-effective Fe-PANI catalyst with high catalytic activity, stability, and adsorption performance has great potential for industrial-level wastewater treatment.
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Affiliation(s)
- Bofang Shi
- State Key Laboratory of Multiphase Flow in Power Engineering, Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an710049, China
| | - Hang Li
- State Key Laboratory of Multiphase Flow in Power Engineering, Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an710049, China
| | - Xiaojie Fu
- Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Department of Applied Chemistry, School of Chemistry, Xi'an Jiaotong University, Xi'an710049, China
| | - Chengcheng Zhao
- State Key Laboratory of Multiphase Flow in Power Engineering, Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an710049, China
| | - Mingtao Li
- State Key Laboratory of Multiphase Flow in Power Engineering, Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an710049, China
| | - Maochang Liu
- State Key Laboratory of Multiphase Flow in Power Engineering, Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an710049, China
| | - Wei Yan
- State Key Laboratory of Multiphase Flow in Power Engineering, Department of Environmental Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an710049, China
| | - Honghui Yang
- Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Department of Applied Chemistry, School of Chemistry, Xi'an Jiaotong University, Xi'an710049, China
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7
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Cai T, Teng Z, Wen Y, Zhang H, Wang S, Fu X, Song L, Li M, Lv J, Zeng Q. Single-atom site catalysts for environmental remediation: Recent advances. JOURNAL OF HAZARDOUS MATERIALS 2022; 440:129772. [PMID: 35988491 DOI: 10.1016/j.jhazmat.2022.129772] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 08/09/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
Single-atom site catalysts (SACs) can maximize the utilization of active metal species and provide an attractive way to regulate the activity and selectivity of catalytic reactions. The adjustable coordination configuration and atomic structure of SACs enable them to be an ideal candidate for revealing reaction mechanisms in various catalytic processes. The minimum use of metals and relatively tight anchoring of the metal atoms significantly reduce leaching and environmental risks. Additionally, the unique physicochemical properties of single atom sites endow SACs with superior activity in various catalytic processes for environmental remediation (ER). Generally, SACs are burgeoning and promising materials in the application of ER. However, a systematic and critical review on the mechanism and broad application of SACs-based ER is lacking. Herein, we review emerging studies applying SACs for different ERs, such as eliminating organic pollutants in water, removing volatile organic compounds, purifying automobile exhaust, and others (hydrodefluorination and disinfection). We have summarized the synthesis, characterization, reaction mechanism and structural-function relationship of SACs in ER. In addition, the perspectives and challenges of SACs for ER are also analyzed. We expect that this review can provide constructive inspiration for discoveries and applications of SACs in environmental catalysis in the future.
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Affiliation(s)
- Tao Cai
- School of Resources & Environment and Safety Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Zhenzhen Teng
- College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Yanjun Wen
- School of Resources & Environment and Safety Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Huayang Zhang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Shaobin Wang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.
| | - Xijun Fu
- School of Resources & Environment and Safety Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Lu Song
- School of Resources & Environment and Safety Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Mi Li
- School of Resources & Environment and Safety Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Junwen Lv
- School of Resources & Environment and Safety Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Qingyi Zeng
- School of Resources & Environment and Safety Engineering, University of South China, Hengyang, Hunan 421001, China.
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8
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Wang B, Cheng C, Jin M, He J, Zhang H, Ren W, Li J, Wang D, Li Y. A Site Distance Effect Induced by Reactant Molecule Matchup in Single-Atom Catalysts for Fenton-Like Reactions. Angew Chem Int Ed Engl 2022; 61:e202207268. [PMID: 35719008 DOI: 10.1002/anie.202207268] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Indexed: 12/13/2022]
Abstract
Understanding the site interaction nature of single-atom catalysts (SACs), especially densely populated SACs, is vital for their application to various catalytic reactions. Herein, we report a site distance effect, which emphasizes how well the distance of the adjacent copper atoms (denoted as dCu1-Cu1 ) matches with the reactant peroxydisulfate (PDS) molecular size to determine the Fenton-like reaction reactivity on the carbon-supported SACs. The optimized dCu1-Cu1 in the range of 5-6 Å, which matches the molecular size of PDS, endows the catalyst with a nearly two times higher turnover frequency than that of dCu1-Cu1 beyond this range, accordingly achieving record-breaking kinetics for the oxidation of emerging organic contaminants. Further studies suggest that this site distance effect originates from the alteration of PDS adsorption to a dual-site structure on Cu1 -Cu1 sites when dCu1-Cu1 falls within 5-6 Å, significantly enhancing the interfacial charge transfer and consequently resulting in the most efficient catalyst for PDS activation so far.
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Affiliation(s)
- Bingqing Wang
- Department of Chemistry, Tsinghua University, Beijing, 100029, China
| | - Cheng Cheng
- Department of Environmental Science and Engineering, School of Resource and Environmental Sciences, Wuhan University, Wuhan, 430079, China
| | - Mengmeng Jin
- School of Materials Science and Engineering, Institute for New Energy Materials and Low-Carbon Technologies, Tianjin University of Technology, Tianjin, 300384, China
| | - Jia He
- School of Materials Science and Engineering, Institute for New Energy Materials and Low-Carbon Technologies, Tianjin University of Technology, Tianjin, 300384, China
| | - Hui Zhang
- Department of Environmental Science and Engineering, School of Resource and Environmental Sciences, Wuhan University, Wuhan, 430079, China
| | - Wei Ren
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resource Recycle, Nanchang Hangkong University, Nanchang, 330063, China
| | - Jiong Li
- Shanghai Synchrotron Radiation Facilities, Shanghai Institute of Applied Physics, Chinese Academy of Science, Shanghai, 201204, China
| | - Dingsheng Wang
- Department of Chemistry, Tsinghua University, Beijing, 100029, China
| | - Yadong Li
- Department of Chemistry, Tsinghua University, Beijing, 100029, China
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9
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Wang B, Cheng C, Jin M, He J, Zhang H, Ren W, Li J, Wang D, Li Y. A Site Distance Effect Induced by Reactant Molecule Matchup in Single‐Atom Catalysts for Fenton‐like Reactions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207268] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bingqing Wang
- Tsinghua University Department of Chemistry Tsinghua University CHINA
| | - Cheng Cheng
- Wuhan University Department of Environmental Science and Engineering CHINA
| | - Mengmeng Jin
- Tianjin University of Technology School of Materials Science and Engineering CHINA
| | - Jia He
- Tianjin University of Technology School of Materials Science and Engineering CHINA
| | - Hui Zhang
- Wuhan University Department of materials science and engineering CHINA
| | - Wei Ren
- Nanchang Hangkong University School of Materials Science and Engineering CHINA
| | - Jiong Li
- SINAP: Shanghai Institute of Applied Physics Chinese Academy of Sciences Physics CHINA
| | - Dingsheng Wang
- Tsinghua University Department of Chemistry Haidian 100084 Beijing CHINA
| | - Yadong Li
- Tsinghua University Department of Chemistry CHINA
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10
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Song C, Zhan Q, Liu F, Wang C, Li H, Wang X, Guo X, Cheng Y, Sun W, Wang L, Qian J, Pan B. Overturned Loading of Inert CeO 2 to Active Co 3 O 4 for Unusually Improved Catalytic Activity in Fenton-Like Reactions. Angew Chem Int Ed Engl 2022; 61:e202200406. [PMID: 35128779 DOI: 10.1002/anie.202200406] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Indexed: 11/09/2022]
Abstract
In the past decades, numerous efforts have been devoted to improving the catalytic activity of nanocomposites by either exposing more active sites or regulating the interaction between the support and nanoparticles while keeping the structure of the active sites unchanged. Here, we report the fabrication of a Co3 O4 -CeO2 nanocomposite via overturning the loading direction, i.e., loading an inert CeO2 support onto active Co3 O4 nanoparticles. The resultant catalyst exhibits unexpectedly higher activity and stability in peroxymonosulfate-based Fenton-like reactions than its analog prepared by the traditional impregnation method. Abundant oxygen vacancies (Ov with a Co⋅⋅⋅Ov ⋅⋅⋅Ce structure instead of Co⋅⋅⋅Ov ) are generated as new active sites to facilitate the cleavage of the peroxide bond to produce SO4 .- and accelerate the rate-limiting step, i.e., the desorption of SO4 .- , affording improved activity. This strategy is a new direction for boosting the catalytic activity of nanocomposite catalysts in various scenarios, including environmental remediation and energy applications.
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Affiliation(s)
- Chunli Song
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing, 210094, China
| | - Qing Zhan
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816, China
| | - Fei Liu
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing, 210094, China
| | - Chuan Wang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing, 210094, China
| | - Hongchao Li
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing, 210094, China
| | - Xuan Wang
- Key Lab of Mesoscopic Chemistry MOE, School of Chemistry & Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Xuefeng Guo
- Key Lab of Mesoscopic Chemistry MOE, School of Chemistry & Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Yingchun Cheng
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816, China
| | - Wei Sun
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, South-Central University for Nationalities, Wuhan, 430074, China
| | - Li Wang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, South-Central University for Nationalities, Wuhan, 430074, China
| | - Jieshu Qian
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing, 210094, China.,Research Center for Environmental Nanotechnology (ReCENT), School of Environment, State Key Laboratory of Environmental Pollution and Resources Reuse, Nanjing University, Nanjing, 210023, China
| | - Bingcai Pan
- Research Center for Environmental Nanotechnology (ReCENT), School of Environment, State Key Laboratory of Environmental Pollution and Resources Reuse, Nanjing University, Nanjing, 210023, China
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11
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Overturned Loading of Inert CeO
2
to Active Co
3
O
4
for Unusually Improved Catalytic Activity in Fenton‐Like Reactions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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