Side reactions in photocatalytic H2 production by overall water splitting

被引：0
|
作者：
Bie, Chuanbiao [1 ,2 ]
Jiang, Chenchen [1 ]
Yang, Jindi [2 ]
Sun, Xin [2 ]
Zeng, Xiangkang [2 ]
Zhang, Jianjun [1 ]
Zhu, Bicheng [1 ]
机构：
[1] China Univ Geosci, Fac Mat Sci & Chem, Lab Solar Fuel, 68 Jincheng St, Wuhan 430078, Peoples R China
[2] Univ Queensland, Dow Ctr Sustainable Engn Innovat, Sch Chem Engn, St Lucia, Qld 4072, Australia
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2025年 / 229卷
基金：
澳大利亚研究理事会; 中国博士后科学基金; 中国国家自然科学基金;
关键词：
Photocatalysis; Water splitting; Dissolved oxygen; Hydrogen peroxide; Cocatalyst; HYDROGEN-PRODUCTION; SELECTIVITY; PEROXIDE;
D O I：
10.1016/j.jmst.2024.12.047
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The inefficiency of photocatalytic overall water splitting is well documented and has been extensively studied. However, a crucial aspect of this process, the side reaction, has often been overlooked. In this study, we investigate the impact of side reactions on photocatalytic overall water splitting by monitoring factors such as dissolved oxygen, reactive oxygen species, and hydrogen peroxide. Further insights into the side reaction are obtained through the introduction of a platinum cocatalyst. Our findings reveal that dissolved oxygen significantly contributes to the side reaction by promoting the production of hydrogen peroxide. This byproduct is generated at the expense of electrons needed for the hydrogen evolution reaction, thereby reducing the overall efficiency of photocatalytic water splitting. This article aims to provide guidance on future research directions in the field of water splitting, with a particular emphasis on photocatalysis. (c) 2025 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
引用
收藏
页码：48 / 57
页数：10
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