Fabrication of the hierarchical ZnO/CdS/PDA heterojunction for enhancing photocatalytic hydrogen evolution activity

文献类型： 外文期刊

第一作者： Cai, Mei

作者： Cai, Mei;Cai, Mei;Shui, Anze;Zhou, Yi;Zhou, Wenting;He, Chao

作者机构：

关键词： ZnO/CdS/PDA heterojunction; Photocatalytic hydrogen evolution; Simulated sunlight

期刊名称：JOURNAL OF ALLOYS AND COMPOUNDS （ 影响因子：6.3； 五年影响因子：5.9 ）

ISSN： 0925-8388

年卷期： 2025 年 1036 卷

页码：

收录情况： SCI

摘要： Photocatalytic hydrogen evolution from water is identified as a promising strategy for sustainable energy production. In this study, the hierarchical ZnO/CdS/PDA heterojunction is successfully synthesized via hydrothermal method and dopamine (DA) self-polymerization for photocatalytic hydrogen evolution. Under the simulated sunlight, the hydrogen evolution rate of ternary ZnO/CdS/PDA photocatalyst is 1430.2 mu mol g-1 h-1, which is 56.8, 11.1, 275.0 and 5.5 times higher than ZnO (25.2 mu mol g-1 h-1), CdS (128.4 mu mol g-1 h-1), P25 (5.2 mu mol g-1 h-1), and ZC1.0 (258.2 mu mol g-1 h-1), respectively. Further investigations prove the excellent hydrogen evolution performance of ZnO/CdS/PDA heterojunction is ascribed to the internal porous structure enhancing the diffusion of reactant and product molecules, the available separation of photogenerated electron-hole pairs, and the improvement of redox capacity. Furthermore, the mechanism of photocatalytic process is investigated detailedly. The discovery demonstrates the construction of ZnO/CdS/PDA heterojunction is a promising photocatalyst on photocatalytic hydrogen production and provide a viable insight for fabricating the hierarchical heterojunction with excellent photocatalytic evolution activity.

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