In situ preparation of MoS2/Sv-ZnIn2S4/ZnS composites with directional charge transfer pathway and boosted photocatalytic hydrogen evolution activity

IF 8.1 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-04-19 DOI:10.1016/j.ijhydene.2025.04.251

Aihua Yan , Tongyang Zhang , Fei Huang , Quande Wang , Shijian Lu , Wenxue Zhao , Ye Gao , Zigao Su , Huaqi Yuan

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Abstract

Multiplex modification is considered as one of attractive methods to achieve highly-efficient photocatalytic water splitting into hydrogen evolution performance. Herein, MoS₂/S_v-ZnIn₂S₄/ZnS (MS/S_v-ZIS/ZS) composites were constructed by a facile in-situ engineering technique. The sulfur vacancy, Ohmic-type contact and I-type heterojunction were systematically integrated into the composites. The unique structure could not only facilitate a directional charge transfer and accelerate the charge extraction, but also enhance the charge utilization and improve the hydrogen reduction reaction dynamics. As a result, the composites exhibited a promoted hydrogen evolution rate of 9.5 mmol g⁻¹ h⁻¹, which was about 3.8 times higher than that of pure ZIS. This work may extend the in-situ preparation strategy and motivate the intensive investigation of high-efficiency ZIS-based photocatalysts.

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原位制备具有定向电荷转移途径的 MoS2/Sv-ZnIn2S4/ZnS 复合材料，提高光催化氢气进化活性

多重改性被认为是实现高效光催化水分解析氢性能的一种有吸引力的方法。采用原位工程技术制备了MoS2/Sv-ZnIn2S4/ZnS （MS/Sv-ZIS/ZS）复合材料。将硫空位、欧姆型接触和i型异质结系统地集成到复合材料中。这种独特的结构不仅有利于电荷的定向转移和电荷的提取，而且提高了电荷的利用率，改善了氢还原反应的动力学。结果表明，复合材料的析氢速率为9.5 mmol g−1 h−1，是纯ZIS的3.8倍。这一工作将扩展原位制备策略，推动高效zis基光催化剂的深入研究。

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.