Chem. J. Chinese Universities ›› 2025, Vol. 46 ›› Issue (12): 20250242.doi: 10.7503/cjcu20250242

• Physical Chemistry • Previous Articles     Next Articles

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

YUAN Huaqi1,2, YAN Aihua2,3, WANG Heng2, HUANG Fei1,2(), GAO Ye2, SU Zigao2, HUI Bolei3, LI Nan3   

  1. 1.Jiangsu Key Laboratory of Coal?based Greenhouse Gas Control and Utilization,Carbon Neutrality Institute,China University of Mining and Technology,Xuzhou 221008,China
    2.School of Materials and Physics
    3.School of Low?carbon Energy and Power Engineering,China University of Mining and Technology,Xuzhou 221116,China
  • Received:2025-08-31 Online:2025-12-10 Published:2025-10-14
  • Contact: HUANG Fei E-mail:huangfei7804@163.com
  • Supported by:
    the Xuzhou Science and Technique Program, China(KC21025);the National Natural Science Foundation of China(52002399)

Abstract:

Schottky-type Zn0.11Co0.42Ni0.47Se/ZnIn2S4ZCNSe/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. 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 sample achieves a hydrogen evolution rate of 6.89 mmol·g-1·h-1, which is ca. 3.48 times higher than that of pristine ZIS(1.98 mmol·g-1·h-1). Moreover, band structure, photoelectron dynamics and photothermal characterizations 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: 

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