文献类型：期刊文献

英文题名：Boosting CO2 photoreduction by synergistic optimization of multiple processes through metal vacancy engineering

作者：Wang, Jinlong[1,2];Liu, Dongni[1,2];Li, Mingyang[1,2];Gu, Xiaoyi[1,2];Wu, Shiqun[1,2];Zhang, Jinlong[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Key Lab Adv Mat,Joint Int Res Lab Precis Chem & Mo, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environm Catalysi, Shanghai 200237, Peoples R China

年份：2024

卷号：63

起止页码：202

外文期刊名：CHINESE JOURNAL OF CATALYSIS

收录：;EI(收录号：20243516929663);WOS:【SCI-EXPANDED(收录号:WOS:001301192900001)】；

基金：This work was supported by the National Key Research and Development Program of China (2022YFE0107900, 2022YFB3803600) , the National Natural Science Foundation of China (22202070) , the Innovation Program of Shanghai Municipal Education Commission (2021-01-07-00-02-E00106) , the Science and Technology Commission of Shanghai Municipality (22230780200, 20DZ2250400) , the Postdoctoral Innovative Talent Support Program (BX20220107) , the China Postdoctoral Science Foundation (2022M720050) , the Shanghai Rising-Star Program (22YF1410200) , and Fundamental Research Funds for the Central Universities (222201717003) .

语种：英文

外文关键词：Photocatalyst; Indium oxide; Metal vacancy; Defect; CO2 photoreduction

摘要：The photoreduction of greenhouse gas CO2 2 using photocatalytic technologies not only benefits environmental remediation but also facilitates the production of raw materials for chemicals. However, the efficiency of CO2 2 photoreduction remains generally low due to the challenging activation of CO2 2 and the limited light absorption and separation of charge. Defect engineering of catalysts represents a pivotal strategy to enhance the photocatalytic activity for CO2, 2 , with most research on metal oxide catalysts focusing on the creation of anionic vacancies. The exploration of metal vacancies and their effects, however, is still underexplored. In this study, we prepared an In2O3 2 O 3 catalyst with indium vacancies (VIn) In ) through defect engineering for CO2 2 photoreduction. Experimental and theoretical calculations results demonstrate that V In not only facilitate light absorption and charge separation in the catalyst but also enhance CO2 2 adsorption and reduce the energy barrier for the formation of the key intermediate *COOH during CO2 2 reduction. Through metal vacancy engineering, the activity of the catalyst was 7.4 times, reaching an outstanding rate of 841.32 mu mol g - 1 h-1. - 1 . This work unveils the mechanism of metal vacancies in CO2 2 photoreduction and provides theoretical guidance for the development of novel CO2 2 photoreduction catalysts. (c) 2024, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.