Photocatalytic Water Splitting into Hydrogen Production Performance of Schottky-Type Zn0.11Co0.42Ni0.47Se/ZnIn2S4 Composites

doi:10.7503/cjcu20250242

Chem. J. Chinese Universities

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Photocatalytic Water Splitting into Hydrogen Production Performance of Schottky-Type Zn0.11Co0.42Ni0.47Se/ZnIn2S4 Composites

YUAN Huaqi^1,2, YAN Aihua^2,3, WANG Heng², HUANG Fei^1,2, GAO Ye², SU Zigao², HUI Bolei³, LI Nan³

1. Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, Carbon Neutrality Institute, China University of Mining and Technology
2. School of Materials and Physics, China University of Mining and Technology 3. School of Low-carbon Energy and Power Engineering，China University of Mining and Technology

Received:2025-08-31 Revised:2025-10-06 Online First:2025-10-14 Published:2025-10-14
Contact: HUANG Fei E-mail:huangfei7804@163.com
Supported by:
Supported by the Xuzhou Science and Technique Program, China(No. KC21025) and the National Natural Science Foundation of China (No. 52002399)

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Abstract

Abstract: Schottky-type Zn0.11Co0.42Ni0.47Se/ZnIn2S4 (ZCNSe/ZIS) composites were constructed by a two-step hydrothermal/water-bath method. The influence of phase composition, morphological structure, interfacial structure, band alignment and photothermal effect on the hydrogen evolution reaction (HER) was investigated in detail. The photocatalytic mechanism was discussed. The results indicate that ZCNSe/ZIS samples exhibit excellent photothermal effect, which effectively improves the visible-light and near-infrared-light absorption. Simultaneously, the Schottky contact facilitates the carrier separation and suppresses the electron-hole recombination. Consequently, the HER performance is enhanced markedly, and the optimal ZCNSe-4/ZIS samples achieve a hydrogen evolution rate of 6.89 mmol·g-1·h-1, which is 3.48 times higher than that of pristine ZIS (1.98·mmol·g-1·h-1). Moreover, band structure analysis, photoelectron dynamics characterization and photothermal tests collectively corroborate the photogenerated carrier transfer mechanism in Schottky-type ZCNSe/ZIS composites.

Key words: Multi-principal selenide, Photothermal effect, ZnIn₂S₄; Cocatalyst, Photocatalytic water splitting

CLC Number:

O643.3

TrendMD:

YUAN Huaqi, YAN Aihua, WANG Heng, HUANG Fei, GAO Ye, SU Zigao, HUI Bolei, LI Nan. Photocatalytic Water Splitting into Hydrogen Production Performance of Schottky-Type Zn0.11Co0.42Ni0.47Se/ZnIn2S4 Composites[J]. Chem. J. Chinese Universities, doi: 10.7503/cjcu20250242.

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Photocatalytic Water Splitting into Hydrogen Production Performance of Schottky-Type Zn0.11Co0.42Ni0.47Se/ZnIn2S4 Composites

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