1. Halogen‐Incorporated Sn Catalysts for Selective Electrochemical CO2 Reduction to Formate.
- Author
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Wang, Tian, Chen, Jiadong, Ren, Xinyi, Zhang, Jincheng, Ding, Jie, Liu, Yuhang, Lim, Kang Hui, Wang, Junhu, Li, Xuning, Yang, Hongbin, Huang, Yanqiang, Kawi, Sibudjing, and Liu, Bin
- Subjects
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ELECTROLYTIC reduction , *TIN , *CATALYSTS , *FORMIC acid , *CARBON emissions , *FOSSIL fuels , *TIN alloys - Abstract
Electrochemically reducing CO2 to valuable fuels or feedstocks is recognized as a promising strategy to simultaneously tackle the crises of fossil fuel shortage and carbon emission. Sn‐based catalysts have been widely studied for electrochemical CO2 reduction reaction (CO2RR) to make formic acid/formate, which unfortunately still suffer from low activity, selectivity and stability. In this work, halogen (F, Cl, Br or I) was introduced into the Sn catalyst by a facile hydrolysis method. The presence of halogen was confirmed by a collection of ex situ and in situ characterizations, which rendered a more positive valence state of Sn in halogen‐incorporated Sn catalyst as compared to unmodified Sn under cathodic potentials in CO2RR and therefore tuned the adsorption strength of the key intermediate (*OCHO) toward formate formation. As a result, the halogen‐incorporated Sn catalyst exhibited greatly enhanced catalytic performance in electrochemical CO2RR to produce formate. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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