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Zhou H, Chen F, Liu D, Qin X, Jing Y, Zhong C, Shi R, Liu Y, Zhang J, Zhu Y, Wang J. Boosting Reactive Oxygen Species Formation Over Pd and VO δ Co-Modified TiO 2 for Methane Oxidation into Valuable Oxygenates. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2311355. [PMID: 38363051 DOI: 10.1002/smll.202311355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/06/2024] [Indexed: 02/17/2024]
Abstract
Direct photocatalytic methane oxidation into value-added products provides a promising strategy for methane utilization. However, the inefficient generation of reactive oxygen species (ROS) partly limits the activation of CH4. Herein, it is reported that Pd and VOδ co-modified TiO2 enables direct and selective methane oxidation into liquid oxygenates in the presence of O2 and H2. Due to the extra ROS production from the in situ formed H2O2, a highly improved yield rate of 5014 µmol g-1 h-1 for liquid oxygenates with a selectivity of 89.3% is achieved over the optimized Pd0.5V0.2-TiO2 catalyst at ambient temperature, which is much better than those (2682 µmol g-1 h-1, 77.8%) without H2. Detailed investigations also demonstrate the synergistic effect between Pd and VOδ species for enhancing the charge carrier separation and transfer, as well as improving the catalytic activity for O2 reduction and H2O2 production.
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Affiliation(s)
- Huanyu Zhou
- College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Centre for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
| | - Fan Chen
- College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Centre for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
| | - Dandan Liu
- College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Centre for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
| | - Xin Qin
- College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Centre for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
| | - Yangchi Jing
- College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Centre for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
| | - Chenyu Zhong
- College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Centre for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
| | - Rui Shi
- College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Centre for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
| | - Yana Liu
- College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Centre for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
| | - Jiguang Zhang
- College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Centre for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
| | - Yunfeng Zhu
- College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Centre for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
| | - Jun Wang
- College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, China
- Jiangsu Collaborative Innovation Centre for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, 211816, China
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2
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Li Q, Liu QY, Zhao YX, He SG. Conversion of Methane at Room Temperature Mediated by the Ta-Ta σ-Bond. JACS AU 2024; 4:1824-1832. [PMID: 38818048 PMCID: PMC11134373 DOI: 10.1021/jacsau.4c00032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 04/03/2024] [Accepted: 04/04/2024] [Indexed: 06/01/2024]
Abstract
Metal-metal bonds constitute an important type of reactive centers for chemical transformation; however, the availability of active metal-metal bonds being capable of converting methane under mild conditions, the holy grail in catalysis, remains a serious challenge. Herein, benefiting from the systematic investigation of 36 metal clusters of tantalum by using mass spectrometric experiments complemented with quantum chemical calculations, the dehydrogenation of methane at room temperature was successfully achieved by 18 cluster species featuring σ-bonding electrons localized in single naked Ta-Ta centers. In sharp contrast, the other 18 remaining clusters, either without naked Ta-Ta σ-bond or with σ-bonding electrons delocalized over multiple Ta-Ta centers only exhibit molecular CH4-adsorption reactivity or inertness. Mechanistic studies revealed that changing cluster geometric configurations and tuning the number of simple inorganic ligands (e.g., oxygen) could flexibly manipulate the presence or absence of such a reactive Ta-Ta σ-bond. The discovery of Ta-Ta σ-type bond being able to exhibit outstanding activity toward methane conversion not only overturns the traditional recognition that only the metal-metal π- or δ-bonds of early transition metals could participate in bond activation but also opens up a new access to design of promising metal catalysts with dual-atom as reactive sites for chemical transformations.
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Affiliation(s)
- Qian Li
- State
Key Laboratory for Structural Chemistry of Unstable and Stable Species,
Institute of Chemistry, Chinese Academy
of Sciences, Beijing 100190, PR China
- University
of Chinese Academy of Sciences, Beijing 100049, PR China
- Beijing
National Laboratory for Molecular Sciences and CAS Research/Education
Centre of Excellence in Molecular Sciences, Beijing 100190, PR China
| | - Qing-Yu Liu
- State
Key Laboratory for Structural Chemistry of Unstable and Stable Species,
Institute of Chemistry, Chinese Academy
of Sciences, Beijing 100190, PR China
- Beijing
National Laboratory for Molecular Sciences and CAS Research/Education
Centre of Excellence in Molecular Sciences, Beijing 100190, PR China
| | - Yan-Xia Zhao
- State
Key Laboratory for Structural Chemistry of Unstable and Stable Species,
Institute of Chemistry, Chinese Academy
of Sciences, Beijing 100190, PR China
- Beijing
National Laboratory for Molecular Sciences and CAS Research/Education
Centre of Excellence in Molecular Sciences, Beijing 100190, PR China
| | - Sheng-Gui He
- State
Key Laboratory for Structural Chemistry of Unstable and Stable Species,
Institute of Chemistry, Chinese Academy
of Sciences, Beijing 100190, PR China
- University
of Chinese Academy of Sciences, Beijing 100049, PR China
- Beijing
National Laboratory for Molecular Sciences and CAS Research/Education
Centre of Excellence in Molecular Sciences, Beijing 100190, PR China
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3
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Ren J, Wang B, Yin HQ, Zhang P, Wang XH, Quan Y, Yao S, Lu TB, Zhang ZM. Single Dispersion of Fe(H 2O) 2-Based Polyoxometalate on Polymeric Carbon Nitride for Biomimetic CH 4 Photooxidation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2403101. [PMID: 38771974 DOI: 10.1002/adma.202403101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 04/24/2024] [Indexed: 05/23/2024]
Abstract
Direct methane conversion to value-added oxygenates under mild conditions with in-depth mechanism investigation has attracted wide interest. Inspired by methane monooxygenase, the K9Na2Fe(H2O)2{[γ-SiW9O34Fe(H2O)]}2·25H2O polyoxometalate (Fe-POM) with well-defined Fe(H2O)2 sites is synthesized to clarify the key role of Fe species and their microenvironment toward CH4 photooxidation. The Fe-POM can efficiently drive the conversion of CH4 to HCOOH with a yield of 1570.0 µmol gPOM -1 and 95.8% selectivity at ambient conditions, much superior to that of [Fe(H2O)SiW11O39]5- with Fe(H2O) active site, [Fe2SiW10O38(OH)]2 14- and [P8W48O184Fe16(OH)28(H2O)4]20- with multinuclear Fe-OH-Fe active sites. Single-dispersion of Fe-POM on polymeric carbon nitride (PCN) is facilely achieved to provide single-cluster functionalized PCN with well-defined Fe(H2O)2 site, the HCOOH yield can be improved to 5981.3 µmol gPOM -1. Systemic investigations demonstrate that the (WO)4-Fe(H2O)2 can supply Fe═O active center for C-H activation via forming (WO)4-Fea-Ot···CH4 intermediate, similar to that for CH4 oxidation in the monooxygenase. This work highlights a promising and facile strategy for single dispersion of ≈1-2 Å metal center with precise coordination microenvironment by uniformly anchoring nanoscale molecular clusters, which provides a well-defined model for in-depth mechanism research.
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Affiliation(s)
- Jing Ren
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 391 West Binshui Road, Tianjin, 300384, China
| | - Baifan Wang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Hua-Qing Yin
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 391 West Binshui Road, Tianjin, 300384, China
| | - Peng Zhang
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 391 West Binshui Road, Tianjin, 300384, China
| | - Xin-Hui Wang
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 391 West Binshui Road, Tianjin, 300384, China
| | - Yangjian Quan
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, 999077, China
| | - Shuang Yao
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 391 West Binshui Road, Tianjin, 300384, China
| | - Tong-Bu Lu
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 391 West Binshui Road, Tianjin, 300384, China
| | - Zhi-Ming Zhang
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 391 West Binshui Road, Tianjin, 300384, China
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Zhang R, Shi J, Fu L, Liu YG, Jia Y, Han Z, Yuan K, Jiang HY. Direct Photocatalytic Methane Oxidation to Formaldehyde by N Doping Co-Decorated Mixed Crystal TiO 2. ACS NANO 2024; 18:12994-13005. [PMID: 38721844 DOI: 10.1021/acsnano.4c01318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
In this paper, N-doped TiO2 mixed crystals are prepared via direct calcination of TiN for highly selective oxidation of CH4 to HCHO at room temperature. The structures of the prepared TiO2 samples are characterized to be N-doped TiO2 of anatase and rutile mixed crystals. The crystal structures of TiO2 samples are determined by XRD spectra and Raman spectra, while N doping is demonstrated by TEM mapping, ONH inorganic element analysis, and high-resolution XPS results. Significantly, the production rate of HCHO is as high as 23.5 mmol·g-1·h-1 with a selectivity over 90%. Mechanism studies reveal that H2O is the main oxygen source and acts through the formation of ·OH. DFT calculations indicate that the construction of a mixed crystal structure and N-doping modification mainly act by increasing the adsorption capacity of H2O. An efficient photocatalyst was prepared by us to convert CH4 to HCHO with high yield and selectivity, greatly promoting the development of the photocatalytic CH4 conversion study.
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Affiliation(s)
- Ruixue Zhang
- Key Lab of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education and the Energy and Catalysis Hub, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, P.R. China
| | - Jiale Shi
- Key Lab of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education and the Energy and Catalysis Hub, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, P.R. China
| | - Lei Fu
- Key Lab of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education and the Energy and Catalysis Hub, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, P.R. China
| | - Ya-Ge Liu
- Key Lab of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education and the Energy and Catalysis Hub, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, P.R. China
| | - Yibing Jia
- Key Lab of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education and the Energy and Catalysis Hub, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, P.R. China
| | - Zhenyu Han
- Key Lab of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education and the Energy and Catalysis Hub, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, P.R. China
| | - Kun Yuan
- College of Chemical Engineering and Technology, Tianshui Normal University, Tianshui 741001, P. R. China
| | - Hai-Ying Jiang
- Key Lab of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education and the Energy and Catalysis Hub, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, P.R. China
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5
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Xu W, Liu HX, Hu Y, Wang Z, Huang ZQ, Huang C, Lin J, Chang CR, Wang A, Wang X, Zhang T. Metal-Oxo Electronic Tuning via In Situ CO Decoration for Promoting Methane Conversion to Oxygenates over Single-Atom Catalysts. Angew Chem Int Ed Engl 2024; 63:e202315343. [PMID: 38425130 DOI: 10.1002/anie.202315343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 02/25/2024] [Accepted: 02/29/2024] [Indexed: 03/02/2024]
Abstract
Direct methane conversion (DMC) to oxygenates at low temperature is of great value but remains challenging due to the high energy barrier for C-H bond activation. Here, we report that in situ decoration of Pd1-ZSM-5 single atom catalyst (SAC) by CO molecules significantly promoted the DMC reaction, giving the highest turnover frequency of 207 h-1 ever reported at room temperature and ~100 % oxygenates selectivity with H2O2 as oxidant. Combined characterizations and DFT calculations illustrate that the C-atom of CO prefers to coordinate with Pd1, which donates electrons to the Pd1-O active center (L-Pd1-O, L=CO) generated by H2O2 oxidation. The correspondingly improved electron density over Pd-O pair renders a favorable heterolytic dissociation of C-H bond with low energy barrier of 0.48 eV. Applying CO decoration strategy to M1-ZSM-5 (M=Pd, Rh, Ru, Fe) enables improvement of oxygenates productivity by 3.2-11.3 times, highlighting the generalizability of this method in tuning metal-oxo electronic structure of SACs for efficient DMC process.
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Affiliation(s)
- Weibin Xu
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Han-Xuan Liu
- Shaanxi Key Laboratory of Energy Chemical Process Intensification, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi An Shi, Xi'an, 710049, China
| | - Yue Hu
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhen Wang
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zheng-Qing Huang
- Shaanxi Key Laboratory of Energy Chemical Process Intensification, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi An Shi, Xi'an, 710049, China
| | - Chuande Huang
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Jian Lin
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Chun-Ran Chang
- Shaanxi Key Laboratory of Energy Chemical Process Intensification, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi An Shi, Xi'an, 710049, China
| | - Aiqin Wang
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Xiaodong Wang
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Tao Zhang
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
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6
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Kumar P, Antal P, Wang X, Wang J, Trivedi D, Fellner OF, Wu YA, Nemec I, Santana VT, Kopp J, Neugebauer P, Hu J, Kibria MG, Kumar S. Partial Thermal Condensation Mediated Synthesis of High-Density Nickel Single Atom Sites on Carbon Nitride for Selective Photooxidation of Methane into Methanol. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304574. [PMID: 38009795 DOI: 10.1002/smll.202304574] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 10/30/2023] [Indexed: 11/29/2023]
Abstract
Direct selective transformation of greenhouse methane (CH4) to liquid oxygenates (methanol) can substitute energy-intensive two-step (reforming/Fischer-Tropsch) synthesis while creating environmental benefits. The development of inexpensive, selective, and robust catalysts that enable room temperature conversion will decide the future of this technology. Single-atom catalysts (SACs) with isolated active centers embedded in support have displayed significant promises in catalysis to drive challenging reactions. Herein, high-density Ni single atoms are developed and stabilized on carbon nitride (NiCN) via thermal condensation of preorganized Ni-coordinated melem units. The physicochemical characterization of NiCN with various analytical techniques including HAADF-STEM and X-ray absorption fine structure (XAFS) validate the successful formation of Ni single atoms coordinated to the heptazine-constituted CN network. The presence of uniform catalytic sites improved visible absorption and carrier separation in densely populated NiCN SAC resulting in 100% selective photoconversion of (CH4) to methanol using H2O2 as an oxidant. The superior catalytic activity can be attributed to the generation of high oxidation (NiIII═O) sites and selective C─H bond cleavage to generate •CH3 radicals on Ni centers, which can combine with •OH radicals to generate CH3OH.
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Affiliation(s)
- Pawan Kumar
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW Calgary, Alberta, T2N 1N4, Canada
| | - Peter Antal
- Department of Inorganic Chemistry, Faculty of Science, Palacký University Olomouc, Olomouc, 77146, Czech Republic
| | - Xiyang Wang
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interface Foundry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Jiu Wang
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW Calgary, Alberta, T2N 1N4, Canada
| | - Dhwanil Trivedi
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW Calgary, Alberta, T2N 1N4, Canada
| | - Ondřej František Fellner
- Department of Inorganic Chemistry, Faculty of Science, Palacký University Olomouc, Olomouc, 77146, Czech Republic
| | - Yimin A Wu
- Department of Mechanical and Mechatronics Engineering, Waterloo Institute for Nanotechnology, Materials Interface Foundry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Ivan Nemec
- Department of Inorganic Chemistry, Faculty of Science, Palacký University Olomouc, Olomouc, 77146, Czech Republic
| | - Vinicius Tadeu Santana
- Central European Institute of Technology, Brno University of Technology, Purkyňova 123, Brno, 61200, Czech Republic
| | - Josef Kopp
- Department of Experimental Physics Faculty of Science, Palacký University Olomouc, 17. listopadu 1192/12, Olomouc, 77900, Czech Republic
| | - Petr Neugebauer
- Central European Institute of Technology, Brno University of Technology, Purkyňova 123, Brno, 61200, Czech Republic
| | - Jinguang Hu
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW Calgary, Alberta, T2N 1N4, Canada
| | - Md Golam Kibria
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW Calgary, Alberta, T2N 1N4, Canada
| | - Subodh Kumar
- Department of Inorganic Chemistry, Faculty of Science, Palacký University Olomouc, Olomouc, 77146, Czech Republic
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7
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He C, Gong Y, Li S, Wu J, Lu Z, Li Q, Wang L, Wu S, Zhang J. Single-Atom Alloys Materials for CO 2 and CH 4 Catalytic Conversion. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2311628. [PMID: 38181452 DOI: 10.1002/adma.202311628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/27/2023] [Indexed: 01/07/2024]
Abstract
The catalytic conversion of greenhouse gases CH4 and CO2 constitutes an effective approach for alleviating the greenhouse effect and generating valuable chemical products. However, the intricate molecular characteristics characterized by high symmetry and bond energies, coupled with the complexity of associated reactions, pose challenges for conventional catalysts to attain high activity, product selectivity, and enduring stability. Single-atom alloys (SAAs) materials, distinguished by their tunable composition and unique electronic structures, confer versatile physicochemical properties and modulable functionalities. In recent years, SAAs materials demonstrate pronounced advantages and expansive prospects in catalytic conversion of CH4 and CO2. This review begins by introducing the challenges entailed in catalytic conversion of CH4 and CO2 and the advantages offered by SAAs. Subsequently, the intricacies of synthesis strategies employed for SAAs are presented and characterization techniques and methodologies are introduced. The subsequent section furnishes a meticulous and inclusive overview of research endeavors concerning SAAs in CO2 catalytic conversion, CH4 conversion, and synergy CH4 and CO2 conversion. The particular emphasis is directed toward scrutinizing the intricate mechanisms underlying the influence of SAAs on reaction activity and product selectivity. Finally, insights are presented on the development and future challenges of SAAs in CH4 and CO2 conversion reactions.
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Affiliation(s)
- Chengxuan He
- Key Laboratory for Advanced Materials, 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 & Technology, Shanghai, 200237, China
| | - Yalin Gong
- Key Laboratory for Advanced Materials, 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 & Technology, Shanghai, 200237, China
| | - Songting Li
- Key Laboratory for Advanced Materials, 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 & Technology, Shanghai, 200237, China
| | - Jiaxin Wu
- Key Laboratory for Advanced Materials, 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 & Technology, Shanghai, 200237, China
| | - Zhaojun Lu
- Key Laboratory for Advanced Materials, 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 & Technology, Shanghai, 200237, China
| | - Qixin Li
- Key Laboratory for Advanced Materials, 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 & Technology, Shanghai, 200237, China
| | - Lingzhi Wang
- Key Laboratory for Advanced Materials, 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 & Technology, Shanghai, 200237, China
| | - Shiqun Wu
- Key Laboratory for Advanced Materials, 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 & Technology, Shanghai, 200237, China
| | - Jinlong Zhang
- Key Laboratory for Advanced Materials, 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 & Technology, Shanghai, 200237, China
- Shanghai Engineering Research Center for Multimedia Environmental Catalysis and Resource Utilization, East China University of Science and Technology, Shanghai, 200237, China
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8
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Zhao Z, Xiong Y, Yu S, Fang T, Yi K, Yang B, Zhang Y, Yang X, Liu X, Jia X. Single-atom Zn with nitrogen defects on biomimetic 3D carbon nanotubes for bifunctional oxygen electrocatalysis. J Colloid Interface Sci 2023; 650:934-942. [PMID: 37453317 DOI: 10.1016/j.jcis.2023.06.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/06/2023] [Accepted: 06/26/2023] [Indexed: 07/18/2023]
Abstract
Single atoms catalysts (SACs) have promising development in electrocatalytic energy conversion. Nevertheless, rational design SACs with reversible oxygen electrocatalysis still remain challenge. Herein, we synthesized atomically dispersed Zn with N defect on three-dimensional (3D) biomimetic carbon nanotubes by secondary pyrolysis (Zn-N-C-2), which possesses excellent oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) bifunctional catalytic activities. The biomimetic 3D structure and unique "leaf-branch" system are beneficial to fully expose the active sites. Density functional theory (DFT) calculations show that Zn-N3-D can optimize the charge distribution and facilitate electron transfer step of OH*→O*. Zn-N-C-2 exhibits higher ORR activity than commercial Pt/C with a half-wave potential (E1/2) of 0.85 V and OER overpotential of 450 mV at 10 mA cm-2. After being assembled into the air cathode of aqueous Zn-air battery (ZAB), it demonstrates superior performances with long-term charge and discharge for more than 200 h. This work not only clarifies the controlled synthesis of N-defects Zn SACs with excellent bifunctional electrocatalyst, but also provide in-depth understanding of structural-performance relationships by regulating local microenvironments.
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Affiliation(s)
- Zeyu Zhao
- Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering/State, Shihezi University, Shihezi 832003, PR China
| | - Youpeng Xiong
- Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering/State, Shihezi University, Shihezi 832003, PR China
| | - Shui Yu
- Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering/State, Shihezi University, Shihezi 832003, PR China
| | - Tianwen Fang
- Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering/State, Shihezi University, Shihezi 832003, PR China
| | - Ke Yi
- Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering/State, Shihezi University, Shihezi 832003, PR China
| | - Bin Yang
- Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering/State, Shihezi University, Shihezi 832003, PR China
| | - Yanwen Zhang
- Key Laboratory of Ecophysics and Department of Physics, College of Science, Shihezi University, Shihezi 832003, PR China
| | - Xiaodong Yang
- Key Laboratory of Ecophysics and Department of Physics, College of Science, Shihezi University, Shihezi 832003, PR China
| | - Xinghuan Liu
- Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering/State, Shihezi University, Shihezi 832003, PR China
| | - Xin Jia
- Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering/State, Shihezi University, Shihezi 832003, PR China.
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9
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Modak A. Recent Progress and Opportunity of Metal Single-Atom Catalysts for Biomass Conversion Reactions. Chem Asian J 2023:e202300671. [PMID: 37874179 DOI: 10.1002/asia.202300671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 10/24/2023] [Accepted: 10/24/2023] [Indexed: 10/25/2023]
Abstract
The conversion of lignocellulosic biomass into platform chemicals and fuels by metal single atoms is a new domain in solid catalysis research. Unlike the conventional catalysis route, single-atom catalysts (SACs) proliferate maximum utilization efficiency, high catalytic activity, and good selectivity to the desired product with an ultralow loading of the active sites. More strikingly, SACs show a unique cost-effective pathway for the conversion of complex sugar molecules to value-added chemicals in high yield and selectivity, which may be hindered by conventional metal nanoparticles. Primarily, SACs having adjustable active sites could be easily modified using sophisticated synthetic techniques based on their intended reactions. This review covers current research on the use of SACs with a strong emphasis on the fundamentals of catalyst design, and their distinctive activities in each type of reaction (hydrogenation, hydrogenolysis, hydrodeoxygenation, oxidation, and dehydrogenation). Furthermore, the fundamental insights into the superior actions of SACs within the opportunity and prospects for the industrial-scale synthesis of value-added products from the lignocelluloses are covered.
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Affiliation(s)
- Arindam Modak
- Amity Institute of Applied Sciences (AIAS), Amity University-Noida, Amity Rd, Sector 125, Gautam Buddha, Nagar, Uttar Pradesh, 201301, India
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10
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Chen SH, Yang YF, Song ZY, Xiao XY, Huang CC, Cai X, Li PH, Yang M, Chen A, Liu WQ, Huang XJ. Modulating paired Ir-O-Ir via electronic perturbations of correlated Ir single atoms to overcome catalytic selectivity. Chem Sci 2023; 14:9678-9688. [PMID: 37736653 PMCID: PMC10510769 DOI: 10.1039/d3sc03285j] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 08/23/2023] [Indexed: 09/23/2023] Open
Abstract
Single-atom catalysts have been extensively utilized for electrocatalysis, in which electronic metal-support interactions are typically employed to stabilize single atoms. However, this neglects the metal-metal interactions of adjacent atoms, which are essential for the fine-tuning of selective sites. Herein, the high-loading of Ir single atoms (Ir SAs) (8.9 wt%) were adjacently accommodated into oxygen vacancy-rich Co3O4 nanosheets (Ir SAs/Co3O4). Electronic perturbations for both Ir single atoms and Co3O4 supports were observed under electronic metal-support and metal-metal interactions, thus generating Ir-O-Co/Ir units. Electrons were transferred from Co and Ir to O atoms, inducing the depletion of 3d/5d states in Co/Ir and the occupation of 2p states in O atoms to stabilize the Ir SAs. Moreover, the O atoms of Ir-O-Ir functioned as the main active sites for the electrocatalysis of As(iii), which reduced the energy barrier for the rate-determining step. This was due to the stronger electronic affinities for intermediates from reduction of As(iii), which were completely distinct from other coordinated O atoms of Co3O4 or IrO2. Consequently, the resultant Ir SAs/Co3O4 exhibited far more robust electrocatalytic activities than IrO2/Co3O4 and Co3O4 in the electrocatalysis of As(iii). Moreover, there was a strong orbital coupling effect between the coordinated O atoms of Ir SAs and the -OH of H3AsO3, thus exhibiting superior selectivity for As(iii) in contrast to other common heavy metal cations. This work offers useful insights into the rational design of intriguing SACs with high selectivity and stability for the electrocatalysis and electrochemical analysis of pollutants on an electronic level.
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Affiliation(s)
- Shi-Hua Chen
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 China
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem And Information Technology, Chinese Academy of Sciences Shanghai 200050 China
| | - Yuan-Fan Yang
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 China
- Department of Materials Science and Engineering, University of Science and Technology of China Hefei 230026 China
| | - Zong-Yin Song
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 China
- Department of Materials Science and Engineering, University of Science and Technology of China Hefei 230026 China
| | - Xiang-Yu Xiao
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 China
- Department of Materials Science and Engineering, University of Science and Technology of China Hefei 230026 China
| | - Cong-Cong Huang
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 China
- Department of Materials Science and Engineering, University of Science and Technology of China Hefei 230026 China
| | - Xin Cai
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 China
- Department of Materials Science and Engineering, University of Science and Technology of China Hefei 230026 China
| | - Pei-Hua Li
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 China
| | - Meng Yang
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 China
| | - Aicheng Chen
- Department of Chemistry, University of Guelph Guelph ON N1G 2W1 Canada
| | - Wen-Qing Liu
- Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences Hefei 230031 China
| | - Xing-Jiu Huang
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences Hefei 230031 China
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem And Information Technology, Chinese Academy of Sciences Shanghai 200050 China
- Department of Materials Science and Engineering, University of Science and Technology of China Hefei 230026 China
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11
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Roy S, Li Z, Chen Z, Mata AC, Kumar P, Sarma SC, Teixeira IF, Silva IF, Gao G, Tarakina NV, Kibria MG, Singh CV, Wu J, Ajayan PM. Cooperative Copper Single-Atom Catalyst in 2D Carbon Nitride for Enhanced CO 2 Electrolysis to Methane. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2300713. [PMID: 37572690 DOI: 10.1002/adma.202300713] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 08/04/2023] [Indexed: 08/14/2023]
Abstract
Renewable-electricity-powered carbon dioxide (CO2 ) reduction (eCO2 R) to high-value fuels like methane (CH4 ) holds the potential to close the carbon cycle at meaningful scales. However, this kinetically staggered 8-electron multistep reduction suffers from inadequate catalytic efficiency and current density. Atomic Cu-structures can boost eCO2 R-to-CH4 selectivity due to enhanced intermediate binding energies (BEs) resulting from favorably shifted d-band centers. In this work, 2D carbon nitride (CN) matrices, viz. Na-polyheptazine (PHI) and Li-polytriazine imides (PTI), are exploited to host Cu-N2 type single-atom sites with high density (≈1.5 at%), via a facile metal-ion exchange process. Optimized Cu loading in nanocrystalline Cu-PTI maximizes eCO2 R-to-CH4 performance with Faradaic efficiency (FECH4 ) of ≈68% and a high partial current density of 348 mA cm-2 at -0.84 V vs reversible hydrogen electrode (RHE), surpassing the state-of-the-art catalysts. Multi-Cu substituted N-appended nanopores in the CN frameworks yield thermodynamically stable quasi-dual/triple sites with large interatomic distances dictated by the pore dimensions. First-principles calculations elucidate the relative Cu-CN cooperative effects between the matrices and how the Cu local environment dictates the adsorbate BEs, density of states, and CO2 -to-CH4 energy profile landscape. The 9N pores in Cu-PTI yield cooperative Cu-Cu sites that synergistically enhance the kinetics of the rate-limiting steps in the eCO2 R-to-CH4 pathway.
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Affiliation(s)
- Soumyabrata Roy
- Department of Materials Science and Nano Engineering, Rice University, Houston, Texas, 77005, USA
| | - Zhengyuan Li
- Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH, 45221, USA
| | - Zhiwen Chen
- Department of Material Science and Engineering, University of Toronto, Ontario, M5S 1A1, Canada
| | - Astrid Campos Mata
- Department of Materials Science and Nano Engineering, Rice University, Houston, Texas, 77005, USA
| | - Pawan Kumar
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW Calgary, Alberta, T2N 1N4, Canada
| | - Saurav Ch Sarma
- Department of Chemical Engineering, Imperial College London, London, England, SW7 2AZ, UK
| | - Ivo F Teixeira
- Department of Chemistry, Federal University of São Carlos, São Carlos, SP, 13565-905, Brazil
- Department of Colloid Chemistry, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, D-, 14476, Potsdam, Germany
| | - Ingrid F Silva
- Department of Colloid Chemistry, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, D-, 14476, Potsdam, Germany
| | - Guanhui Gao
- Department of Materials Science and Nano Engineering, Rice University, Houston, Texas, 77005, USA
| | - Nadezda V Tarakina
- Department of Colloid Chemistry, Max-Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, D-, 14476, Potsdam, Germany
| | - Md Golam Kibria
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW Calgary, Alberta, T2N 1N4, Canada
| | - Chandra Veer Singh
- Department of Material Science and Engineering, University of Toronto, Ontario, M5S 1A1, Canada
| | - Jingjie Wu
- Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH, 45221, USA
| | - Pulickel M Ajayan
- Department of Materials Science and Nano Engineering, Rice University, Houston, Texas, 77005, USA
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12
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Gao F, Wang X, Cui WG, Liu Y, Yang Y, Sun W, Chen J, Liu P, Pan H. Topologically Porous Heterostructures for Photo/Photothermal Catalysis of Clean Energy Conversion. SMALL METHODS 2023; 7:e2201532. [PMID: 36813753 DOI: 10.1002/smtd.202201532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/26/2023] [Indexed: 06/18/2023]
Abstract
As a straightforward way to fix solar energy, photo/photothermal catalysis with semiconductor provides a promising way to settle the energy shortage and environmental crisis in many fields, especially in clean energy conversion. Topologically porous heterostructures (TPHs), featured with well-defined pores and mainly composed by the derivatives of some precursors with specific morphology, are a major part of hierarchical materials in photo/photothermal catalysis and provide a versatile platform to construct efficient photocatalysts for their enhanced light absorption, accelerated charges transfer, improved stability, and promoted mass transportation. Therefore, a comprehensive and timely review on the advantages and recent applications of the TPHs is of great importance to forecast the potential applications and research trend in the future. This review initially demonstrates the advantages of TPHs in photo/photothermal catalysis. Then the universal classifications and design strategies of TPHs are emphasized. Besides, the applications and mechanisms of photo/photothermal catalysis in hydrogen evolution from water splitting and COx hydrogenation over TPHs are carefully reviewed and highlighted. Finally, the challenges and perspectives of TPHs in photo/photothermal catalysis are also critically discussed.
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Affiliation(s)
- Fan Gao
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, P. R. China
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Xinqiang Wang
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, P. R. China
| | - Wen-Gang Cui
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, P. R. China
| | - Yanxia Liu
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, P. R. China
| | - Yaxiong Yang
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, P. R. China
| | - Wenping Sun
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Jian Chen
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, P. R. China
| | - Ping Liu
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Hongge Pan
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, P. R. China
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
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13
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Antil N, Chauhan M, Akhtar N, Kalita R, Manna K. Selective Methane Oxidation to Acetic Acid Using Molecular Oxygen over a Mono-Copper Hydroxyl Catalyst. J Am Chem Soc 2023; 145:6156-6165. [PMID: 36897313 DOI: 10.1021/jacs.2c12042] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Acetic acid is an industrially important chemical, produced mainly via carbonylation of methanol using precious metal-based homogeneous catalysts. As a low-cost feedstock, methane is commercially transformed to acetic acid via a multistep process involving energy-intensive methane steam reforming, methanol synthesis, and, subsequently, methanol carbonylation. Here, we report a direct single-step conversion of methane to acetic acid using molecular oxygen (O2) as the oxidant under mild conditions over a mono-copper hydroxyl site confined in a porous cerium metal-organic framework (MOF), Ce-UiO-Cu(OH). The Ce-UiO MOF-supported single-site copper hydroxyl catalyst gave exceptionally high acetic acid productivity of 335 mmolgcat-1 in 96% selectivity with a Cu TON up to 400 at 115 °C in water. Our spectroscopic and theoretical studies and controlled experiments reveal that the conversion of methane to acetic acid occurs via oxidative carbonylation, where methane is first activated at the copper hydroxyl site via σ-bond metathesis to afford Cu-methyl species, followed by carbonylation with in situ-generated carbon monoxide and subsequent hydrolysis by water. This work may guide the rational design of heterogeneous abundant metal catalysts for the activation and conversion of methane to acetic acid and other valuable chemicals under mild and environmentally friendly reaction conditions.
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Affiliation(s)
- Neha Antil
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Manav Chauhan
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Naved Akhtar
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Rahul Kalita
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Kuntal Manna
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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14
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Methane Oxidation over the Zeolites-Based Catalysts. Catalysts 2023. [DOI: 10.3390/catal13030604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023] Open
Abstract
Zeolites have ordered pore structures, good spatial constraints, and superior hydrothermal stability. In addition, the active metal elements inside and outside the zeolite framework provide the porous material with adjustable acid–base property and good redox performance. Thus, zeolites-based catalysts are more and more widely used in chemical industries. Combining the advantages of zeolites and active metal components, the zeolites-based materials are used to catalyze the oxidation of methane to produce various products, such as carbon dioxide, methanol, formaldehyde, formic acid, acetic acid, and etc. This multifunction, high selectivity, and good activity are the key factors that enable the zeolites-based catalysts to be used for methane activation and conversion. In this review article, we briefly introduce and discuss the effect of zeolite materials on the activation of C–H bonds in methane and the reaction mechanisms of complete methane oxidation and selective methane oxidation. Pd/zeolite is used for the complete oxidation of methane to carbon dioxide and water, and Fe- and Cu-zeolite catalysts are used for the partial oxidation of methane to methanol, formaldehyde, formic acid, and etc. The prospects and challenges of zeolite-based catalysts in the future research work and practical applications are also envisioned. We hope that the outcome of this review can stimulate more researchers to develop more effective zeolite-based catalysts for the complete or selective oxidation of methane.
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15
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Liu X, Zhao F, Jiao L, Fang T, Zhao Z, Xiao X, Li D, Yi K, Wang R, Jia X. Atomically Dispersed Fe/N 4 and Ni/N 4 Sites on Separate-Sides of Porous Carbon Nanosheets with Janus Structure for Selective Oxygen Electrocatalysis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2300289. [PMID: 36929092 DOI: 10.1002/smll.202300289] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/10/2023] [Indexed: 06/18/2023]
Abstract
Dual single atoms catalysts have promising application in bifunctional electrocatalysis due to their synergistic effect. However, how to balance the competition between rate-limiting steps (RDSs) of reversible oxygen reduction and oxygen evolution reaction (OER) and fully expose the active centers by reasonable structure design remain enormous challenges. Herein, Fe/N4 and Ni/N4 sites separated on different sides of the carbon nanosheets with Janus structure (FeNijns /NC) is synthesized by layer-by-layer assembly method. Experiments and calculations reveal that the side of Fe/N4 is beneficial to oxygen reduction reaction (ORR) and the Ni/N4 side is preferred to OER. Such Janus structure can take full advantage of two separate-sides of carbon nanosheets and balance the competition of RDSs during ORR and OER. FeNijns /NC possesses superior ORR and OER activity with ORR half-wave potential of 0.92 V and OER overpotential of 440 mV at J = 10 mA cm-2 . Benefiting from the excellent bifunctional activities, FeNijns /NC assembled aqueous Zn-air battery (ZAB) demonstrates better maximum power density, and long-term stability (140 h) than Pt/C+RuO2 catalyst. It also reveals superior flexibility and stability in solid-state ZAB. This work brings a novel perspective for rational design and understanding of the catalytic mechanisms of dual single atom catalysts.
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Affiliation(s)
- Xinghuan Liu
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, P. R. China
| | - Fei Zhao
- College of Chemistry and Chemical Engineering, Taishan University, Taian, 271000, P. R. China
| | - Long Jiao
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Tianwen Fang
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, P. R. China
| | - Zeyu Zhao
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, P. R. China
| | - Xiangfei Xiao
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, P. R. China
| | - Danya Li
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, P. R. China
| | - Ke Yi
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, P. R. China
| | - Rongjie Wang
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, P. R. China
| | - Xin Jia
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, P. R. China
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16
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Sajid M, Khan B, Shahzad N. Methane C-H bond heterolysis versus homolysis on Cu-MFI and Au-MFI. J Mol Graph Model 2023; 121:108446. [PMID: 36898226 DOI: 10.1016/j.jmgm.2023.108446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 01/09/2023] [Accepted: 02/28/2023] [Indexed: 03/08/2023]
Abstract
The methane activation reaction is of fundamental importance for its transformation into high-value chemicals. Despite the fact that both homolysis and heterolysis are competitive mechanisms of C-H scission, experimental and DFT studies have revealed heterolytic scission of the C-H bond over metal-exchange zeolites. To rationalize the new catalysts, work must be done on the homolytic versus heterolytic scission of the C-H bond mechanism on these catalysts. We have performed the quantum mechanical calculations for the C-H bond homolysis versus heterolysis over Au-MFI and Cu-MFI catalysts. Calculations results showed that homolysis of the C-H bond is favorable both thermodynamically as well as kinetically over Au-MFI catalysts. However, over Cu-MFI, heterolytic scission is favorable. Both Cu(I) and Au(I) activate the CH4 via electronic density back donation from filled nd10 orbitals, according to NBO calculations. Cu(I) cation has a higher electronic density back donation than Au(I) cation. This is also supported by the charge on the C-atom of Methane. Additionally, a greater negative charge on the O-atom in the active site in case of Cu(I), where proton transfer occurs, promotes heterolytic scission. Because of the larger size of the Au-atom and the smaller negative charge of the O-atom in the active site, where proton transfer occurs, C-H bond homolytic fission is preferable over Au-MFI.
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Affiliation(s)
- Mahnoor Sajid
- Department of Higher Education, Khyber Pakhtunkhwa, Pakistan
| | - Basharat Khan
- Abbottabad University of Science and Technology, Abbottabad, Pakistan.
| | - Nasir Shahzad
- Department of Higher Education, Khyber Pakhtunkhwa, Pakistan; Department of Chemistry, INHA University, South Korea.
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17
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Ru single-atom catalyst anchored on sulfated zirconia for direct methane conversion to methanol. CHINESE JOURNAL OF CATALYSIS 2023. [DOI: 10.1016/s1872-2067(22)64191-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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18
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Zhang H, Jin X, Lee JM, Wang X. Tailoring of Active Sites from Single to Dual Atom Sites for Highly Efficient Electrocatalysis. ACS NANO 2022; 16:17572-17592. [PMID: 36331385 PMCID: PMC9706812 DOI: 10.1021/acsnano.2c06827] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 11/01/2022] [Indexed: 05/27/2023]
Abstract
Single atom catalysts (SACs) have been attracting extensive attention in electrocatalysis because of their unusual structure and extreme atom utilization, but the low metal loading and unified single site induced scaling relations may limit their activity and practical application. Tailoring of active sites at the atomic level is a sensible approach to break the existing limits in SACs. In this review, SACs were first discussed regarding carbon or non-carbon supports. Then, five tailoring strategies were elaborated toward improving the electrocatalytic activity of SACs, namely strain engineering, spin-state tuning engineering, axial functionalization engineering, ligand engineering, and porosity engineering, so as to optimize the electronic state of active sites, tune d orbitals of transition metals, adjust adsorption strength of intermediates, enhance electron transfer, and elevate mass transport efficiency. Afterward, from the angle of inducing electron redistribution and optimizing the adsorption nature of active centers, the synergistic effect from adjacent atoms and recent advances in tailoring strategies on active sites with binuclear configuration which include simple, homonuclear, and heteronuclear dual atom catalysts (DACs) were summarized. Finally, a summary and some perspectives for achieving efficient and sustainable electrocatalysis were presented based on tailoring strategies, design of active sites, and in situ characterization.
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Affiliation(s)
- Hongwei Zhang
- School
of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
- Cambridge
Centre for Advanced Research and Education in Singapore Ltd (Cambridge
CARES), CREATE Tower, Singapore 138602, Singapore
| | - Xindie Jin
- School
of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Jong-Min Lee
- School
of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
| | - Xin Wang
- School
of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
- Cambridge
Centre for Advanced Research and Education in Singapore Ltd (Cambridge
CARES), CREATE Tower, Singapore 138602, Singapore
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19
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Hamadi H, Shakerzadeh E, Esrafili MD. Exploring the potential use of Fe-decorated B40 borospherene as a prospective catalyst for oxidation of methane to methanol. J Mol Graph Model 2022; 118:108369. [DOI: 10.1016/j.jmgm.2022.108369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 10/19/2022] [Accepted: 10/31/2022] [Indexed: 11/12/2022]
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20
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Tang H, Gu H, Li Z, Chai J, Qin F, Lu C, Yu J, Zhai H, Zhang L, Li X, Chen W. Engineering the Coordination Interface of Isolated Co Atomic Sites Anchored on N-Doped Carbon for Effective Hydrogen Evolution Reaction. ACS APPLIED MATERIALS & INTERFACES 2022; 14:46401-46409. [PMID: 36183270 DOI: 10.1021/acsami.2c09107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The regulation of the coordination environment of the central metal atom is considered as an alternative way to enhance the performance of single-atom catalysts (SACs). Herein, we design an electrocatalyst with active sites of isolated Co atoms coordinated with four sulfur atoms supported on N-doped carbon frameworks (Co1-S4/NC), confirmed by high-angle annular dark-field scanning transmission electron microscope (HADDF-STEM) and synchrotron-radiation-based X-ray absorption fine structure (XAFS) spectroscopy. The Co1-S4/NC possesses higher hydrogen evolution reaction (HER) catalytic activity than other Co species and exceptional stability, which exhibits a small Tafel slope of 60 mV dec-1 and a low overpotential of 114 mV at 10 mA cm-2 during the HER in 0.5 M H2SO4 solution. Furthermore, through in situ X-ray absorption spectrum tests and density functional theory (DFT) calculations, we reveal the catalytic mechanism of Co1-S4 moieties and find that the increasing number of sulfur atoms in the Co coordination environment leads to a substantial reduction of the theoretical HER overpotential. This work may point a new direction for the synthesis, performance regulation, and practical application of single-metal-atom catalysts.
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Affiliation(s)
- Hao Tang
- Energy & Catalysis Center, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing100081, China
| | - Hongfei Gu
- Energy & Catalysis Center, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing100081, China
| | - Zheyu Li
- School of Vehicle and Mobility, Tsinghua University, Beijing100084, China
| | - Jing Chai
- School of Vehicle and Mobility, Tsinghua University, Beijing100084, China
| | - Fengjuan Qin
- Energy & Catalysis Center, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing100081, China
| | - Chenqi Lu
- Energy & Catalysis Center, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing100081, China
| | - Jiayu Yu
- Energy & Catalysis Center, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing100081, China
| | - Huazhang Zhai
- Energy & Catalysis Center, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing100081, China
| | - Liang Zhang
- School of Vehicle and Mobility, Tsinghua University, Beijing100084, China
- Center for Combustion Energy, Tsinghua University, Beijing100084, China
| | - Xinyuan Li
- MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing100081, China
| | - Wenxing Chen
- Energy & Catalysis Center, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing100081, China
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