Understanding oxygen vacant hollow structure CeO_(2)@In_(2)O_(3) heterojunction to promote CO_(2) reduction

作     者：Qi-Jun Xu Jing-Wen Jiang Xiao-Feng Wang Ling-Yan Duan Hong Guo Qi-Jun Xu;Jing-Wen Jiang;Xiao-Feng Wang;Ling-Yan Duan;Hong Guo

作者机构：School of Materials and EnergyYunnan Key Laboratory for Micro/Nano Materials and TechnologyYunnan UniversityKunming650091China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2023年第42卷第6期

页      面：1888-1898页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：financially supported by the National Natural Science Foundation of China (No.52064049) the Key National Natural Science Foundation of Yunnan Province (Nos. 2018FA028 and 2019FY003023) the International Joint Research Center for Advanced Energy Materials of Yunnan Province (No. 202003AE140001) the Key Laboratory of Solid State Ions for Green Energy of Yunnan University (2019) the Analysis and Measurements Center of Yunnan University for the Sample Testing Service 

主　　题：H-CeO_(2-x)@ln_(2)O_(3-x) Oxygen vacancy Hollow structure Photocatalytic CO_(2)reduction 

摘      要：In order to reduce the impact of greenhouse gases,we have studied a new and efficient photocatalyst to reduce CO_(2).We recombined the hollow CeO_(2) with the In_(2)O_(3) and introduced the oxygen vacancy to obtain the CeO_(2)@In_(2)O_(3) for the hollow structure of the oxygen *** test results show that CeO_(2)@In_(2)O_(3) with oxygen vacancy hollow structure(hereinafter collectively referred to as H-CeO_(2),H-In_(2)O_(3),and H-CeO_(2-x)@In_(2)O_(3-x))have higher photocatalytic reduction activity of CO_(2) than hollow CeO_(2) and hollow In_(2)O_(3).When the illumination time was 4 h,the yields of carbon dioxide reduction to CO and methane were 38.7 and 7.8 μmol·g^(-1),***,we explained the photocatalytic reduction mechanism,and carried out the X-ray diffraction(XRD)and in situ diffuse reflectance infrared Fourier transform spectroscopy(DRIFTS) analysis of H-CeO_(2),H-In_(2)O_(3),and H-CeO_(2-x)@In_(2)O_(3-x).This study summarizes some experience for the study of oxygen vacancy hollow structure photocatalyst,and provides some new ideas in the field of photocatalytic reduction of CO_(2).