Controllable engineering of ZnIn2S4 with sulfur vacancy as an efficient piezocatalyst toward H2 production

文献类型： 外文期刊

第一作者： Huang, Mianli

作者： Huang, Mianli;Zhang, Hongli;Xu, Miaoqiong;Chen, Wen-Jie;Pan, Xiaoyang;Zhang, Hongli;Liang, Shijing;Huang, Mianli

作者机构：

关键词： Piezocatalyst; Sulfur vacancy; Defect

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 1016 卷

页码：

收录情况： SCI

摘要： The identification of novel and efficient piezoelectric catalysts is crucial for practical applications. Utilizing Density Functional Theory (DFT) calculations, ZnIn2S4 (ZIS), possessing a non-central symmetric crystal structure, is identified as a promising piezoelectric material for piezocatalysis. Hierarchical ZIS nanosheets are synthesized through a facile hydrothermal method, and defect engineering is employed to enhance their activity. By optimizing the defect concentration, ZIS-300, with the optimal defect level, demonstrates the highest H2 production rate of approximately 3164.67 mu mo1.g- 1.h- 1 under ultrasound, surpassing previously reported piezocatalysts. Furthermore, ZIS-300 exhibits good stability, maintaining its activity and structural integrity after five cycles. Detailed piezo-electrochemical analyses attribute the enhanced piezocatalytic performance to the introduction of sulfur vacancies, which create a shallow donor band facilitating the generation and separation of charge carrier. This work contributes to a deeper understanding of designing high-performance piezocatalysts through theoretical calculations and defect engineering strategies.

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