文献类型：期刊文献

英文题名：ZnIn2S4 with oxygen atom doping and surface sulfur vacancies for overall water splitting under visible light irradiation

作者：Jing, Haitong[1,3,4];Ren, Jun[1];Yue, Jianyong[1,3,4];Liu, Shiyan[1];Liang, Qifeng[1];Wu, Rong[3,4];Wang, Yawei[5];Fang, Zebo[1];Li, Huili[2];Wei, Shunhang[1]

机构：[1]Shaoxing Univ, Zhejiang Engn Res Ctr MEMS, Shaoxing 312000, Peoples R China;[2]Shanghai Normal Univ, Coll Chem & Mat Sci, Shanghai 200234, Peoples R China;[3]Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830000, Xinjiang, Peoples R China;[4]Xinjiang Univ, Xinjiang Key Lab Solid State Phys & Devices, Urumqi 830017, Xinjiang, Peoples R China;[5]Jiujiang Univ, Sch Chem & Chem Engn, Jiujiang 332005, Peoples R China

年份：0

外文期刊名：CATALYSIS SCIENCE & TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:000891518300001)、、WOS

基金：This work was supported by the National Natural Science Foundation of China (Grant no. 51872186, 22066024, and 52062023), the Shanghai Sailing Program (Grant No. 20YF1435100), and a project funded by the China Postdoctoral Science Foundation (Grant No. 2021M702316).

语种：英文

外文摘要：Previous reports have found that surface sulfur vacancies can improve the hydrogen production performance of ZnIn2S4, and oxygen atom doping can improve its water oxidation ability. However, the simultaneous introduction of these two factors to achieve photocatalytic overall water splitting under visible-light irradiation has not been reported. In this work, we introduce surface sulfur vacancies and oxygen atom doping simultaneously via calcination of the ZnIn2S4 obtained by a hydrothermal method under an air atmosphere. Their synergistic effect on the photocatalytic overall water splitting activity is investigated in detail by controlling the calcination temperature and calcination time. Both surface sulfur vacancies and oxygen atom doping can inhibit carrier recombination, and oxygen atom doping can increase the photogenerated carrier concentration. Surface sulfur vacancies and oxygen atom doping can increase the photocatalytic rate 2-3 times, respectively, confirming that the two are equally important for the improvement of photocatalytic activity. More importantly, the synergistic effect of sulfur vacancies and oxygen atom doping results in a solar-to-hydrogen (STH) efficiency of similar to 0.035% (the highest efficiency reported so far for single-phase ZnIn2S4) and a stable photocatalytic overall water splitting performance.