Controllable engineering of ZnIn2S4 with sulfur vacancy as an efficient piezocatalyst toward H2 production
文献类型： 外文期刊
作者： Huang, Mianli 1 ; Zhang, Hongli 1 ; Xu, Miaoqiong 1 ; Chen, Wen-Jie 1 ; Pan, Xiaoyang 1 ; Liang, Shijing 2 ;
作者机构： 1.Quanzhou Normal Univ, Coll Chem Engn & Mat, Quanzhou 362000, Peoples R China
2.Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Peoples R China
3.Fujian Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Fujian Key Lab Agroprod Qual & Safety, Fuzhou 350003, Peoples R China
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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