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Efficient ZnS–ZnO/ZnAl-LDH composite for H2 production by photocatalysis

Author

Listed:
  • Gil, J. José
  • Aguilar-Martínez, Octavio
  • Piña-Pérez, Yanet
  • Pérez-Hernández, Raúl
  • Santolalla-Vargas, C.E.
  • Gómez, R.
  • Tzompantzi, F.

Abstract

In the present work, the synthesis of ZnS–ZnO composites supported on ZnAl-LDH material with photocatalytic applications is proposed. The ZnS–ZnO/ZnAl-LDH composites showed to be efficient for the photocatalytic H2 production using UV light and methanol as sacrificial agent. The ZnO/ZnAl-LDH precursor material was synthesized by the coprecipitation method, then, it was partially sulfided using different contents of thiourea by the solvothermal method. The most photo-active material showed a H2 production of 1599 μmolh−1g−1 and an apparent quantum yield of 37.9%. These materials were characterized by X-ray diffraction, Rietveld refinement, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, diffuse reflectance spectroscopy, N2 adsorption-desorption isotherms, high-resolution transmission electron microscopy and elementary mapping. The ZnS–ZnO/ZnAl-LDH composites exhibited a H2 evolution higher than the precursor material under the same conditions. The increase on the H2 production was attributed to the formation of ZnS–ZnO heterojunction; and in addition, the ZnAl-LDH material acts as a support promoting the dispersion of the ZnS–ZnO composite on its surface.

Suggested Citation

  • Gil, J. José & Aguilar-Martínez, Octavio & Piña-Pérez, Yanet & Pérez-Hernández, Raúl & Santolalla-Vargas, C.E. & Gómez, R. & Tzompantzi, F., 2020. "Efficient ZnS–ZnO/ZnAl-LDH composite for H2 production by photocatalysis," Renewable Energy, Elsevier, vol. 145(C), pages 124-132.
    • Handle: RePEc:eee:renene:v:145:y:2020:i:c:p:124-132
    DOI: 10.1016/j.renene.2019.06.001
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    Cited by:

    1. Cao, Jun & Xu, Xiaoqing & Que, Lixin & Li, Hui & Wang, Jingjing & Zheng, Yingying & Pan, Jiaqi & Li, Chaorong, 2024. "The Cd0.8Zn0.2S/In2S3 porous nanotubes heterojunction towards enhanced visible light photocatalytic H2 evolution and photodegradation via MOFs self-template and bimetallic synergism," Renewable Energy, Elsevier, vol. 224(C).

    More about this item

    Keywords

    ZnS–ZnO/ZnAl-LDH; H2 production by photocatalysis; Sulfidation by the solvothermal method;
    All these keywords.

    JEL classification:

    • H2 - Public Economics - - Taxation, Subsidies, and Revenue

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