文献类型：期刊文献

英文题名：Probing the Roles of Indium Oxides on Copper Catalysts for Enhanced Selectivity during CO2-to-CO Electrochemical Reduction

作者：Jia, Yanyan[1,2];Hsu, Hua-Shan[3];Huang, Wan-Chun[4];Lee, Da-Wei[4];Lee, Sheng-Wei[4];Chen, Tsan-Yao[5,6];Zhou, Lihui[1,2];Wang, Jeng-Han[3];Wang, Kuan-Wen[4];Dai, Sheng[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[3]Natl Taiwan Normal Univ, Dept Chem, Taipei 116, Taiwan;[4]Natl Cent Univ, Inst Mat Sci & Engn, Taoyuan 320, Taiwan;[5]Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu 30013, Taiwan;[6]Natl Cheng Kung Univ, Hierarch Green Energy Mat Hi GEM Res Ctr, Tainan 70101, Taiwan

年份：2023

卷号：23

期号：6

起止页码：2262

外文期刊名：NANO LETTERS

收录：;EI(收录号：20231113741503);WOS:【SCI-EXPANDED(收录号:WOS:000954373700001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (Grant 22109043), Science and Technology Commission of Shanghai Municipality (22ZR1415700), Shanghai Rising-star Program (20QA1402400), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, the Fundamental Research Funds for the Central Universities, and the Ministry of Science and Technology, R.O.C. (MOST 110-2221-E-008-061-MY3). Additional support was provided by the Frontiers Science Center for Materiobiology and Dynamic Chemistry and the Feringa Nobel Prize Scientist Joint Research Center at East China University of Science and Technology.

语种：英文

外文关键词：copper; ind i u m oxide; CO2 R R; in situ X-ray absorption spectroscopy; density functional theor y

摘要：The electrochemical CO2 reduction reaction (CO2RR) provides an alternative protocol to producing industrial chemicals with renewable electricity sources, and the highly selective, durable, and economic catalysts should expedite CO2RR applications. Here, we demonstrate a composite Cu-In2O3 catalyst in which a trace amount of In2O3 decorated on Cu surface greatly improves the selectivity and stability for CO2-to-CO reduction as compared to the counterparts (Cu or In2O3), realizing a CO faradaic efficiency (FECO) of 95% at -0.7 V (vs RHE) and no obvious degradation within 7 h. In situ X-ray absorption spectroscopy reveals that In2O3 undergoes the redox reaction and preserves the metallic state of Cu during the CO2RR process. Strong electronic interaction and coupling occur at the Cu/In2O3 interface which serves as the active site for selective CO2RR. Theoretical calculation confirms the roles of In2O3 in preventing oxidation and altering the electronic structure of Cu to assist COOH* formation and demote CO* adsorption at the Cu/In2O3 interface.