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Wang YJ, Qiu ZF, Zhang Y, Wang FF, Zhao Y, Sun WY. Silver frameworks based on a tetraphenylethylene-imidazole ligand for electrocatalytic reduction of CO 2 to CO. Dalton Trans 2024; 53:3685-3689. [PMID: 38293865 DOI: 10.1039/d3dt04056a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Metal-organic frameworks (MOFs) can be used as electrocatalysts for the CO2 reduction reaction (CO2RR) because of their well-dispersed metal centers. Silver is a common electrocatalyst for reduction of CO2 to CO. In this study, two Ag-MOFs with different structures of [Ag8O2(TIPE)6](NO3)4 (Ag-MOF1) and [Ag(TIPE)0.5CF3SO3] (Ag-MOF2) [TIPE = 1,1,2,2-tetrakis(4-(imidazol-1-yl)phenyl)ethene] were synthesized and used for CO2 electroreduction. The results show that Ag-MOF2 is superior to Ag-MOF1 and exhibits high CO faradaic efficiency (FE) of 92.21% with partial current density of 29.51 mA cm-2 at -0.98 V versus reversible hydrogen electrode (RHE). The FECO is higher than 80% in the potential range of -0.78 to -1.18 V. The difference may be caused by different framework structures leading to different electrochemical active surface areas and charge transfer kinetics. This study provides a new strategy for designing and constructing CO2 electroreduction catalysts and provides potential ways for solving environmental and energy problems caused by excessive CO2 emission.
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Affiliation(s)
- Yu-Jie Wang
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Zhao-Feng Qiu
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Ya Zhang
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Fang-Fang Wang
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Yue Zhao
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
| | - Wei-Yin Sun
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China.
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Wang Q, Guan Y, Yan J, Liu Y, Shao Q, Ning F, Yi J. Facile synthesis of lead-tin nanoparticles for electrocatalyzing carbon dioxide reduction to formate. Dalton Trans 2023; 52:4136-4141. [PMID: 36883983 DOI: 10.1039/d2dt04059j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
A series of Pb-Sn catalysts were synthesized via facile chemical reduction for electrocatalytic CO2 reduction (ECR). The optimized sample (Pb7Sn1) achieved 90.53% formate faradaic efficiency (FE) at a potential of -1.9 V vs. Ag/AgCl. Electrochemical and material evaluation reveals that its high performance can be attributed to the rich active sites exposed by the high specific surface area of the electrode. In addition, the synergy between Pb and Sn is also a strong contributor to the high selectivity of formate. This work provides some insights into the preparation of simple and efficient ECR catalysts.
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Affiliation(s)
- Qilong Wang
- Institute for Sustainable Energy/College of Sciences, Shanghai University, Shangda Road 99, Baoshan, Shanghai 200444, China.
| | - Yayu Guan
- Institute for Sustainable Energy/College of Sciences, Shanghai University, Shangda Road 99, Baoshan, Shanghai 200444, China.
| | - Jiaying Yan
- Institute for Sustainable Energy/College of Sciences, Shanghai University, Shangda Road 99, Baoshan, Shanghai 200444, China.
| | - Yuyu Liu
- Institute for Sustainable Energy/College of Sciences, Shanghai University, Shangda Road 99, Baoshan, Shanghai 200444, China.
| | - Qinsi Shao
- Institute for Sustainable Energy/College of Sciences, Shanghai University, Shangda Road 99, Baoshan, Shanghai 200444, China.
| | - Fanghua Ning
- Institute for Sustainable Energy/College of Sciences, Shanghai University, Shangda Road 99, Baoshan, Shanghai 200444, China.
| | - Jin Yi
- Institute for Sustainable Energy/College of Sciences, Shanghai University, Shangda Road 99, Baoshan, Shanghai 200444, China.
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