Enhanced photocatalytic hydrogen production by constructing Ca-Doped ZnIn2S4: Modulation of internal electric field and H adsorption/desorption

被引：2

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] East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, State Environm Protect Key Lab Environm Risk Asses, 130 Meilong Rd, Shanghai 200237, Peoples R China

[2] Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

[3] East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environm Catalysi, 130 Meilong Rd, Shanghai 200237, Peoples R China

[4] East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Key Lab Adv Mat & Joint Int Res Lab Precis Chem &, 130 Meilong Rd, Shanghai 200237, Peoples R China

[5] Shanghai Key Lab Rare Earth Funct Mat, Shanghai 200234, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2025年 / 1022卷

基金：

中国国家自然科学基金;

关键词：

Doping; Internal electric field; H adsorption/desorption; Photocatalyst; H-2-PRODUCTION ACTIVITY; WATER; NANOSHEETS; REDUCTION; CR(VI);

D O I：

10.1016/j.jallcom.2025.179985

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

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 mu mol/g/h, approximately 2.4 times that of the pristine ZnIn2S4 (259.39 mu mol/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.

引用

页数：12

共 68 条

[11] ELECTROCHEMICAL PHOTOLYSIS OF WATER AT A SEMICONDUCTOR ELECTRODE [J].