格式化
法拉第效率
化学
催化作用
电化学
吸附
无机化学
化学工程
氧化还原
复合数
电极
物理化学
材料科学
有机化学
工程类
复合材料
作者
Yayu Guan,Jiaying Yan,Yuyu Liu,Fanghua Ning,Jin Yi,Jiujun Zhang
标识
DOI:10.1016/j.jcat.2023.05.023
摘要
Electrochemical CO2 reduction reaction (eCO2RR) is considered an efficient approach to produce value-added chemicals and fuels. In this paper, a series of MOF-derived composite catalysts with coexisting In2O3 and ZnO are fabricated using a simple process for eCO2RR to produce formate. The Zn-In-O/800 catalyst achieves a formate Faradaic efficiency (FEHCOO−) of 94.25 % at −1.16 V vs. RHE, which can maintain over 89 % after 30 h in a stability test. The electrochemical evidence and density functional theory analysis show that the strong interface effect between In2O3 and ZnO can enhance the CO2 adsorption and activation, and promote the conversion of CO2 to formate. In addition, the ZnO phase can protect In2O3, as the main active site, from being reduced to a certain extent for a long time under negative potential, which ensures the high stability of the composite catalyst.
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