ZnIn2S4 modified CaTiO3 nanocubes with enhanced photocatalytic hydrogen performance

被引：40

作者：

Dai, Fangxu ^{[1
]}

Wang, Ying ^{[1
]}

Zhao, Ruiyang ^{[2
]}

Zhou, Xinran ^{[2
]}

Han, Jishu ^{[1
]}

Wang, Lei ^{[1
]}

机构：

[1] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Key Lab Ecochem Engn, Minist Educ, Qingdao 266042, Peoples R China

[2] Qingdao Univ Sci & Technol, Coll Chem Engn, Qingdao 266042, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2020年 / 45卷 / 53期

基金：

中国国家自然科学基金;

关键词：

ZnIn2S4; CaTiO3; Hydrogen production; Photocatalysis; H-2; EVOLUTION; HETEROJUNCTION; CONSTRUCTION; NANOCOMPOSITES; FABRICATION; EFFICIENCY;

D O I：

10.1016/j.ijhydene.2020.07.228

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Novel ZnIn2S4/CaTiO3 nanocubes were prepared by a two-step method and used as a visible light photocatalyst for efficient hydrogen production. The control of the content of CaTiO3 could effectively change the photocatalytic H-2 production activity of ZnIn2S4/CaTiO3 nanocubes, and the maximum H-2 evolution amount reached to 133116.43 mu mol g(-1) in 6 h. The photocatalytic hydrogen production efficiency of ZnIn2S4/CaTiO3 nanocubes was almost 4.5 times higher than that of pure ZnIn2S4. The electrochemical impedance spectrum of ZnIn2S4/CaTiO3 exhibited the smallest arc radius, time-resolved PL spectrum showed that the carrier lifetime of ZnIn2S4/CaTiO3 nanocubes was 3.29 ns, and the photocurrent density of ZnIn2S4/CaTiO3 reached to 0.81 mu A cm(-2). The prepared ZnIn2S4/CaTiO3 nanocubes increased visible light absorption, improved the separation and transfer of photo-generated electrons and holes, and inhibited the recombination of photogenerated electron-hole pairs. ZnIn2S4/CaTiO3 nanocubes exhibited the enhanced photocatalytic activity and high stability, and could be used as promising photocatalyst for hydrogen production application. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：28783 / 28791

页数：9

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