高等学校化学学报2024，Vol.45Issue(5)：81-91,11.DOI:10.7503/cjcu20240055
绣球花状ZnIn2S4/CoWO4 S型异质结的构建及可见光催化产氢性能
Construction and Visible Photocatalytic Hydrogen Performance of Hydrangea-like ZnIn2S4/CoWO4 S-scheme Heterojunction
摘要
Abstract
Rational design of heterojunction structures to accelerate photocatalytic hydrogen evolution plays an indis-pensable role in the development of photocatalytic materials.ZnIn2S4(ZIS)has been widely used in the field of photo-catalytic hydrogen evolution due to its excellent photoelectric properties and negative conduction band position,but it still has serious problems of photogenerated carrier recombination and aggregation.Therefore,the band structure and electron transfer path of ZnIn2S4/CoWO4(ZIS/CWO)S-scheme heterojunction were predicted by theoretical calcula-tion,and the electron exchange at the interface of the heterojunction was determined by electron localization function and charge density difference.Subsequently,CWO nanoparticles were dispersed and fixed on the surface of ZIS flower balls by ultrasonic-agitation-calcination method,and the hydrangea-like ZIS/CWO S-scheme heterojunction was obtained.Owing to the tight interface and the formation of internal electric field between ZIS and CWO,the photogenerated electron-hole pairs in ZIS/CWO S-scheme heterojunction can be effectively separated,thus enhancing the photocatalytic hydrogen evolution performance.Meanwhile,the experimental results confirmed the formation of S-scheme heterojunction and carrier transport path,revealing the in-depth mechanism of photocatalytic hydrogen evolution.This work offers novel insights and approaches for the design,construction,and theoretical calculation of S-scheme heterojunction photocatalysts.关键词
光催化产氢/S型异质结/ZnIn2S4/CoWO4/理论计算Key words
Photocatalytic hydrogen evolution/S-scheme heterojunction/ZnIn2S4/CoWO4/Theoretical calculation分类
化学化工引用本文复制引用
赵玉彤,王仕凯,赵福萍,陈志合,赵丽杰,张大凤,葛博,蒲锡鹏..绣球花状ZnIn2S4/CoWO4 S型异质结的构建及可见光催化产氢性能[J].高等学校化学学报,2024,45(5):81-91,11.基金项目
国家自然科学基金(批准号:52305196)和山东省自然科学基金(批准号:ZR2022ME179)资助. Supported by the National Natural Science Foundation of China(No.52305196)and the Natural Science Foundation of Shandong Province,China(No.ZR2022ME179). （批准号:52305196）
