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Wang S, Zhou S, Ma Z, Gao N, Daiyan R, Leverett J, Shan Y, Zhu X, Zhao Y, Liu Q, Amal R, Lu X, Liu T, Antonietti M, Chen Y, Zhang Q, Tian Z. Oxygen-Substituted Porous C 2N Frameworks as Efficient Electrocatalysts for Carbon Dioxide Electroreduction. Angew Chem Int Ed Engl 2025:e202501896. [PMID: 40156322 DOI: 10.1002/anie.202501896] [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: 01/22/2025] [Revised: 03/13/2025] [Accepted: 03/23/2025] [Indexed: 04/01/2025]
Abstract
The electrochemical carbon dioxide reduction reaction (CO2RR) provides a green avenue for decarbonizing the conventional chemical industries. Here, a structure-selectivity relationship of catalysts is pivotal for the control of a highly selective and active CO2RR pathway. We report the fabrication of an oxygen-substituted C2N as metal-free catalyst (O─C2N) for electrochemical CO2─to─CO conversion with tunable O microenvironment. Combined spectroscopic analysis reveals a fine tailored N─C─O moiety in O─C2N, where C─O─C species (e.g., ring in-plane ether) become the dominant oxygen configurations at higher pyrolysis temperatures. Based on experimental observations, a correlation between the exocyclic O-substituted N─C─O─C moieties and CO selectivity is established, giving clear chemical tools for active structure design. The optimized O─C2N electrocatalysts with the dominant appearance of C─O─C moieties exhibit an outstanding 2e- CO2RR performance with a CO selectivity up to 94.8%, which can be well maintained in a practical flow-cell reactor with an adjustable syngas feature.
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Affiliation(s)
- Shuai Wang
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, P.R. China
| | - Shujie Zhou
- Particles and Catalysis Research Group, School of Chemical Engineering, University of New South Wales, Sydney, 2052, Australia
| | - Zhipeng Ma
- Particles and Catalysis Research Group, School of Chemical Engineering, University of New South Wales, Sydney, 2052, Australia
| | - Nana Gao
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004, P.R. China
| | - Rahman Daiyan
- Particles and Catalysis Research Group, School of Chemical Engineering, University of New South Wales, Sydney, 2052, Australia
| | - Joshua Leverett
- Particles and Catalysis Research Group, School of Chemical Engineering, University of New South Wales, Sydney, 2052, Australia
| | - Yihao Shan
- Particles and Catalysis Research Group, School of Chemical Engineering, University of New South Wales, Sydney, 2052, Australia
| | - Xiaofeng Zhu
- State Key Laboratory of Environment-Friendly Energy Materials, School of Materials and Chemistry, Southwest University of Science and Technology, Mianyang, 621010, P.R. China
| | - Yufei Zhao
- Centre for Clean Energy Technology, University of Technology Sydney, Broadway, Sydney, NSW-2007, Australia
| | - Qiang Liu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, P.R. China
| | - Rose Amal
- Particles and Catalysis Research Group, School of Chemical Engineering, University of New South Wales, Sydney, 2052, Australia
| | - Xunyu Lu
- Particles and Catalysis Research Group, School of Chemical Engineering, University of New South Wales, Sydney, 2052, Australia
| | - Tianxi Liu
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P.R. China
| | - Markus Antonietti
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Potsdam, 14476, Germany
| | - Yinguang Chen
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, P.R. China
| | - Qingran Zhang
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, P.R. China
| | - Zhihong Tian
- Engineering Research Center for Nanomaterials, Henan University, Kaifeng, 475004, P.R. China
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Zhang Y, Chen ZW, Liu X, Wen Z, Singh CV, Yang CC, Jiang Q. Vacancy-Enhanced Sb-N 4 Sites for the Oxygen Reduction Reaction and Zn-Air Battery. NANO LETTERS 2024; 24:4291-4299. [PMID: 38551180 DOI: 10.1021/acs.nanolett.4c00808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
With the advantages of a Fenton-inactive characteristic and unique p electrons that can hybridize with O2 molecules, p-block metal-based single-atom catalysts (SACs) for the oxygen reduction reaction (ORR) have tremendous potential. Nevertheless, their undesirable intrinsic activity caused by the closed d10 electronic configuration remains a major challenge. Herein, an Sb-based SAC featuring carbon vacancy-enhanced Sb-N4 active centers, corroborated by the results of high-angle annular dark-field scanning transmission electron microscopy and X-ray absorption fine structure, has been developed for an incredibly effective ORR. The obtained SbSA-N-C demonstrates a positive half-wave potential of 0.905 V and excellent structural stability in alkaline environments. Density functional theory calculations reveal that the carbon vacancies weaken the adsorption between Sb atoms and the OH* intermediate, thus promoting the ORR performance. Practically, the SbSA-N-C-based Zn-air batteries achieve impressive outcomes, such as a high power density of 181 mW cm-2, showing great potential in real-world applications.
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Affiliation(s)
- Ying Zhang
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, and School of Materials Science and Engineering, Jilin University, Changchun 130022, China
| | - Zhi-Wen Chen
- Department of Materials Science and Engineering, University of Toronto, Toronto, ON M5S 3E4, Canada
| | - Xu Liu
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, and School of Materials Science and Engineering, Jilin University, Changchun 130022, China
| | - Zi Wen
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, and School of Materials Science and Engineering, Jilin University, Changchun 130022, China
| | - Chandra Veer Singh
- Department of Materials Science and Engineering, University of Toronto, Toronto, ON M5S 3E4, Canada
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON M5S 3G8, Canada
| | - Chun Cheng Yang
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, and School of Materials Science and Engineering, Jilin University, Changchun 130022, China
| | - Qing Jiang
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, and School of Materials Science and Engineering, Jilin University, Changchun 130022, China
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