Step-scheme ZnO@ZnS hollow microspheres for improved photocatalytic H2 production performance

被引：106
作者：
Jiang, Jie [1 ]
Wang, Guohong [1 ]
Shao, Yanchi [1 ]
Wang, Juan [1 ]
Zhou, Shuang [2 ]
Su, Yaorong [2 ]
机构：
[1] Hubei Normal Univ, Inst Adv Mat, Coll Chem & Chem Engn, Hubei Key Lab Pollutant Anal & Reuse Technol, Huangshi 435002, Hubei, Peoples R China
[2] Shenzhen Technol Univ, Coll New Mat & New Energies, Shenzhen 518118, Guangdong, Peoples R China
来源：
CHINESE JOURNAL OF CATALYSIS | 2022年 / 43卷 / 02期
基金：
中国国家自然科学基金;
关键词：
ZnO@ZnS; Hollow microspheres; Step-scheme heterojunction; Photocatalytic H-2 production; HIERARCHICAL ZNO; CO2; REDUCTION; QUANTUM-DOT; EFFICIENT; COMPOSITES; G-C3N4; HETEROJUNCTION; TIO2;
D O I：
10.1016/S1872-2067(21)63889-5
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Constructing a step-scheme heterojunction at the interface between two semiconductors is an efficient way to optimize the redox ability and accelerate the charge carrier separation of a photocatalytic system for achieving high photocatalytic performance. In this study, we prepared a hierarchical ZnO@ZnS step-scheme photocatalyst by incorporating ZnS into the outer shell of hollow ZnO microspheres via a simple in situ sulfidation strategy. The ZnO@ZnS step-scheme photocatalysts had a large surface area, high light utilization capacity, and superior separation efficiency for photogenerated charge carriers. In addition, the material simulation revealed that the formation of the step-scheme heterojunction between ZnO and ZnS was due to the presence of the built-in electric field. Our study paves the way for design of high-performance photocatalysts for H-2 production. (C) 2022, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：329 / 338
页数：10
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