异质结
光催化
氧化还原
材料科学
氢
可见光谱
化学工程
纳米技术
催化作用
光电子学
制氢
光化学
化学
工程类
有机化学
冶金
生物化学
作者
Jundie Hu,Chen Cao,Yang Zheng,Guping Zhang,Chunxian Guo,Chang Ming Li
出处
期刊:Small
[Wiley]
日期:2020-08-09
卷期号:16 (37)
被引量:203
标识
DOI:10.1002/smll.202002988
摘要
Abstract Photocatalysis technology using solar energy for hydrogen (H 2 ) production still faces great challenges to design and synthesize highly efficient photocatalysts, which should realize the precise regulation of reactive sites, rapid migration of photoinduced carriers and strong visible light harvest. Here, a facile hierarchical Z‐scheme system with ZnIn 2 S 4 /BiVO 4 heterojunction is proposed, which can precisely regulate redox centers at the ZnIn 2 S 4 /BiVO 4 hetero‐interface by accelerating the separation and migration of photoinduced charges, and then enhance the oxidation and reduction ability of holes and electrons, respectively. Therefore, the ZnIn 2 S 4 /BiVO 4 heterojunction exhibits excellent photocatalytic performance with a much higher H 2 ‐evolution rate of 5.944 mmol g −1 h −1 , which is about five times higher than that of pure ZnIn 2 S 4 . Moreover, this heterojunction shows good stability and recycle ability, providing a promising photocatalyst for efficient H 2 production and a new strategy for the manufacture of remarkable photocatalytic materials.
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