文献类型：期刊文献

英文题名：Molecular Scale Interfacial Water Management Switching Reaction Pathway of Carbon Dioxide Electroreduction

作者：Li, Zongying[1];Chen, Rongzhen[2];Ge, Wangxin[2];Xie, Kunchi[3];Wang, Yating[2];Zhang, Ling[2];Song, Zhen[3];Li, Fengwang[4,5];Li, Yuhang[1,2];Li, Chunzhong[1,3]

机构：[1]Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Dept Chem Engn, Shanghai 200240, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Ultrafine Mat, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn,Minist Educ, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[4]Univ Sydney, Sch Chem & Biomol Engn, Sydney, NSW, Australia;[5]Univ Sydney, Nano Inst, Sydney, NSW, Australia

年份：2025

卷号：64

期号：40

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20253619107437);WOS:【SCI-EXPANDED(收录号:WOS:001560765000001)】；

基金：This work was supported by the National Natural Science Foundation of China (22322805, 22178104, U22B20143, and U24A20546), the Shanghai Municipal Science and Technology Major Project, the Shanghai Scientific and Technological Innovation Project (22dz1205900), the Fundamental Research Funds for the Central Universities, and the Shanghai Rising-Star Program (23QA1402200).

语种：英文

外文关键词：ATR-SEIRAS; C2 products; CO2 electroreduction; Copper-based catalyst; Isolated water

摘要：The electrochemical carbon dioxide reduction reaction (eCO2RR) involves numerous intermediates and simultaneous interactions between these intermediates and water (H2O) molecules. Although extensive research has focused on stabilizing the carbon-related intermediates, limited attention has been paid to investigating the local regulations of H2O molecules at molecular level. Considering the electrocatalytic interface, H2O is critical during CO2RR process, as H2O molecules are directly involved in CO2 reduction process or indirectly modify the solid-liquid interfacial structure, thereby impacting the reaction process. In this study, we use a model copper-based catalyst containing palladium and indium dopants that have different hydrogen and oxygen adsorption capabilities to investigate the influence of H2O molecules on CO2 electroreduction selectivity. We find, by enhancing the participation of isolated H2O molecules, instead of asymmetric H-bonded H2O or ice-like H2O, in the local electrocatalytic microenvironment during CO2 reduction process, that the cathodic products remarkably change from 95% C1 FE to 70% C2 FE. We unveil, via in situ ATR-SEIRAS measurement, that the H2O microenvironment regulation can promote the formation of key intermediates, thus tuning the CO2 reduction pathways.