Construction of CYANO-COF/ZnIn2S4 S-scheme heterojunction for boosted photocatalytic hydrogen generation

文献类型： 外文期刊

第一作者： Ran, Huili

作者： Ran, Huili;Ye, Langhuan;Xu, Quanlong;Liu, Xue;Fan, Jiajie;Zhu, Bicheng;Wei, Yuechang

作者机构：

关键词： Photocatalytic hydrogen generation; Covalent organic frameworks; S -scheme heterojunction

期刊名称：JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY （ 影响因子：14.3； 五年影响因子：12.4 ）

ISSN： 1005-0302

年卷期： 2025 年 234 卷

页码：

收录情况： SCI

摘要： Covalent organic framework (COF)-based heterojunction has emerged as a promising photocatalyst toward solar-to-fuel conversion. However, achieving high charge carrier separation efficiency and superior photocatalytic performance still remain a significant challenge. Herein, CYANO-COF was integrated with ZnIn2 S4 via a facile in-situ growth method, thus forming CYANO-COF/ZnIn2 S4 heterojunction. According to the in-situ light irradiation X-ray photoelectron spectroscopy (XPS) characterization and theoretical calculation, CYANO-COF/ZnIn2 S4 heterojunction was verified to adopt an S-scheme charge transfer mechanism capable of fast charge carrier transfer rate and strong redox ability. As a result, the optimized CYANO- COF/ZnIn2 S4 -7.5 % exhibited a superior photocatalytic hydrogen production rate of 129.1 mmol g-1 h-1 , which was 3.9 and 56 times higher than that of pristine CYANO-COF (33.2 mmol g-1 h-1 ) and ZnIn2 S4 (2.3 mmol g-1 h-1 ), respectively, and the apparent quantum efficiency (AQE) at 420 nm was 20.5 %. The study shed light on the great promising of COF-based organic/inorganic S-scheme heterojunction toward solar fuel generation. (c) 2025 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

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