Defect-poor BaSn(OH)6 enhanced charge separation for efficient photocatalytic degradation of toluene

作     者：Xuemei Wang Xi Zhou Ruiben Jin Tianqi Tan Hao Ma Ruimei Fang Bangwei Deng Fan Dong Xuemei Wang;Xi Zhou;Ruiben Jin;Tianqi Tan;Hao Ma;Ruimei Fang;Bangwei Deng;Fan Dong

作者机构：College of Environment and ResourcesChongqing Key Laboratory of Catalysis and New Environmental MaterialsChongqing Technology and Business UniversityChongqing 400067China Yangtze Delta Region Institute(Huzhou)University of Electronic Science and Technology of ChinaHuzhou 313001China Hangzhou Tianliang Detection Technology COM.LTD.Hangzhou 311202China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2023年第134卷第12期

页      面：86-95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）] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China (Nos. 22176029, 21822601, 51908091, and 52200122) the Natural Science Foundation of Chongqing (No. cstc2019jcyj-msxm X0213) the Science and Technology Research Project of Chongqing Education Commission (No. KJQN202200806) the Start-up Foundation of High-level Talents in Chongqing Technology and Business University (Nos. 2256006 and 1856044) 

主　　题：Defect Charge recombination BaSn(OH)6 Toluene degradation Photocatalysis 

摘      要：Crystal defect is well-known to have a significant effect on the photocatalytic performance of semiconductors. Herein, defect-rich and-poor BaSn(OH)6(BSOH-Sn and BSOH-Ba) photocatalysts were synthesized by exchanging the addition order of Ba and Sn. Results show that the defect-poor BSOH-Ba exhibited more efficient toluene degradation under ultraviolet(UV) light, which could attribute to the great suppression of photogenerated electron-hole(e--h+) pairs recombination by tuning the defect concentration. The low defect concentration in BSOH-Ba finally promotes the charge separation efficiency, the generation of reactive oxygen species(ROS), and the photocatalytic toluene degradation reactions. This work not only provides an effective way to inhibit the recombination of photogenerated carriers and improve the photocatalytic performance, but also promotes the understanding of defective perovskite-type hydroxide for more photoreactions.