Z-scheme heterojunction of SnS_(2)-decorated 3DOM-SrTiO_(3) for selectively photocatalytic CO_(2) reduction into CH4

作     者：Wenjie He Xingxing Wu Yifei Li Jing Xiong Zhiling Tang Yuechang Wei Zhen Zhao Xiao Zhang Jian Liu Wenjie He;Xingxing Wu;Yifei Li;Jing Xiong;Zhiling Tang;Yuechang Wei;Zhen Zhao;Xiao Zhang;Jian Liu

作者机构：State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumBeijing 102249China Key Laboratory of Optical Detection Technology for Oil and GasChina University of PetroleumBeijing 102249China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2020年第31卷第10期

页      面：2774-2778页

核心收录：

学科分类：081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070304[理学-物理化学(含∶化学物理)] 0804[工学-仪器科学与技术] 0703[理学-化学] 

基　　金：the National Natural Science Foundation of China(Nos.21673142,21972166) Beijing Natural Science Foundation(No.2202045) Petro China Innovation Foundation(No.2018D-5007-0505) Science Foundation of China University of Petroleum,Beijing(Nos.242017QNXZ02,2462018BJC005) 

主　　题：3DOM-SrTiO3 SnS_(2) Z-scheme heterojunction CO_(2)conversion CH4 selectivity 

摘      要：The rapid recombination of photoinduced electron-hole pairs as well as the deficiency of high-energy carriers restricted the redox ability and products ***,the heterojunction of SnS_(2)-deco rated three-dimensional ordered macropores(3DOM)-SrTiO_(3) catalysts were in-situ constructed to provide transmit channel for high-energy electron *** suitable band edges of SnS_(2) and SrTiO_(3) contribute to the Z-scheme transfer of photogenerated *** 3DOM structure of SrTiO_(3)-based catalyst possesses the slow light effect for enhancing light adsorption efficiency,and the surface alkalis strontium is benefit to the boosting adsorption for CO_(2).The in-situ introduced SnS_(2) decorated on the macroporous wall surface of 3DOM-SrTiO_(3) altered the primary product from CO to *** Z-scheme electron transfer from SnS_(2) combining with the holes in SrTiO_(3) occurred under full spectrum photoexcitation,which improved the excitation and utilization of photogene rated electrons for C02 multi-electrons *** a result,(SnS_(2))3/3 DOM-SrTiO_(3) catalyst exhibits higher activity for photocatalytic CO_(2) reduction to CH4 compared with single SnS_(2) or 3 DOM-SrTiO_(3),i.e.,its yield and selectivity of CH4 are 12.5μmol g^(-1) h^(-1) and 74.9%,re *** present work proposed the theoretical foundation of Z-scheme heterojunction construction for enhancing photocatalytic activity and selectivity for CO_(2) conversion.