文献类型：期刊文献

英文题名：Enhanced photocatalytic hydrogen production by constructing Ca-Doped ZnIn?S?: Modulation of internal electric field and H adsorption/desorption

作者：Jiang, Wenjun[1]; Hu, Zixu[1]; Zhou, Liang[1,2,3]; Tayyab, Muhammad[4]; Zhang, Jinlong[3,4]; Liu, Yongdi[1]; Lei, Juying[1,2,3,5]

机构：[1] National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China; [2] Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China; [3] Shanghai Engineering Research Center for Multi-media Environmental Catalysis and Resource Utilization, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China; [4] Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China; [5] Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai, 200234, China

年份：2025

卷号：1022

外文期刊名：Journal of Alloys and Compounds

收录：EI(收录号：20251318130187)

语种：英文

外文关键词：Hydrogen bonds - Photocatalytic activity

摘要：Developing efficient photocatalysts for hydrogen production remains a significant challenge due to limitations in charge carrier dynamics and surface reaction efficiency. ZnIn2S4, a promising visible-light-responsive photocatalyst, often suffers from rapid recombination of photogenerated carriers and suboptimal surface reactions. In this study, Ca-doped ZnIn2S4 was synthesized via a one-step hydrothermal method, demonstrating significantly improved hydrogen production performance. The doping of Ca enhances the internal electric field, facilitating the efficient separation and migration of photo-generated charge carriers. Additionally, Ca doping modifies the electronic structure around S active sites, weakening the S-Hads bond and promoting H desorption, thereby optimizing the hydrogen production reaction pathway. The Ca-doped ZnIn2S4 photocatalyst achieved a hydrogen production rate of 661.32 μmol/g/h, approximately 2.4 times that of the pristine ZnIn2S4 (259.39 μmol/g/h). This study demonstrates that Ca doping not only enhances charge carrier dynamics but also precisely adjusts surface properties, providing an effective strategy for developing high-performance photocatalysts for sustainable hydrogen production. ? 2025 Elsevier B.V.