文献类型：期刊文献

英文题名：Sulfur Vacancy-Enriched Rhombohedral ZnIn2S4 Nanosheets for Highly Efficient Photocatalytic Overall Water Splitting under Visible Light Irradiation

作者：Jing, Haitong[1,2];Xu, Gao[2];Yao, Bo[2,3];Ren, Jun[2];Wang, Yawei[4];Fang, Zebo[2,3];Liang, Qifeng[2];Wu, Rong[1];Wei, Shunhang[2,3]

机构：[1]Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830000, Peoples R China;[2]Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China;[3]Shaoxing Univ, Zhejiang Engn Res Ctr MEMS, Shaoxing 312000, Peoples R China;[4]Jiujiang Univ, Sch Chem & Chem Engn, Jiujiang 332005, Peoples R China

年份：2022

卷号：5

期号：8

起止页码：10187

外文期刊名：ACS APPLIED ENERGY MATERIALS

收录：SCI-EXPANDED(收录号：WOS:000844648100001)、、WOS

基金：ACKNOWLEDGMENTS This work was supported by the National Natural Science Foundation of China (grant nos. 51872186, 22066024, 11574215, and 52062023) , the China Postdoctoral Science Foundation (grant no. 2021M702316) , and the Zhejiang Province Public Welfare Technology Application Research Project (grant no. LGG21F050001) .

语种：英文

外文关键词：rhombohedral; sulfur vacancy; ZnIn2S4; overall water splitting; visible light

外文摘要：Crystal phase and vacancies play an important role in regulating photocatalytic activity. In this work, sulfur vacancy-enriched rhombohedral ZnIn2S4 was obtained by calcining hexagonal ZnIn(2)S(4 )with poor sulfur vacancies under a nitrogen atmosphere. Based on the results of theoretical calculations and photocatalytic performance, it was found that the synergy of crystal phase and sulfur vacancies resulted in highly efficient photocatalytic overall water splitting under visible light irradiation. The lighter average effective mass of photogenerated electrons and holes in the rhombohedral ZnIn2S4 accelerates the separation of photogenerated carriers, which plays a major role in achieving overall water splitting activity. An appropriate amount of sulfur vacancies can further improve the overall water splitting performance, which plays a supplementary role. More importantly, the solar-to-hydrogen conversion efficiency of sulfur vacancy-enriched rhombohedral ZnIn2S4 reaches 0.021%, which is the highest reported efficiency for single-phase ZnIn2S4.