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A novel Z-scheme Er3+:YAlO3/Ta2O5-CaIn2S4/MoSe2-reduced graphene oxide photocatalyst with superior photocatalytic hydrogen evolution activity

Author

Listed:
  • Wei, Shengnan
  • Song, Yahui
  • Rong, Yang
  • Tang, Liang
  • Chen, Yang
  • Lu, Chunxiao
  • Zhang, Zhaohong
  • Wang, Jun

Abstract

Here, a high effective visible-ultraviolet up-conversion luminescence agent (Er3+:YAlO3) was synthesized and the Er3+:YAlO3/Ta2O5 composite was prepared by sol-gel method. The MoSe2-reduced graphene oxide (MoSe2-RGO) hybrid as co-catalyst was prepared by hydrothermal method. Afterwards, a new Z-scheme photocatalyst, Er3+:YAlO3/Ta2O5-CaIn2S4/MoSe2-RGO, was successfully assembled by hydrothermal methods for visible-light photocatalytic hydrogen evolution. The Er3+:YAlO3, MoSe2-RGO, Er3+:YAlO3/Ta2O5, CaIn2S4/MoSe2-RGO, Er3+:YAlO3/Ta2O5/MoSe2-RGO and Er3+:YAlO3/Ta2O5-CaIn2S4/MoSe2-RGO were all characterized by X-ray diffractometer (XRD), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), Energy dispersive spectrometer (EDS), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). The UV–vis absorption spectra and photoluminescence (PL) spectra of Er3+:YAlO3 were also measured. The photocatalytic hydrogen production activity of Er3+:YAlO3/Ta2O5-CaIn2S4/MoSe2-RGO was examined under visible-light irradiation. In addition, the reused times of Er3+:YAlO3/Ta2O5-CaIn2S4/MoSe2-RGO for photocatalytic hydrogen production were investigated. The results showed that the Er3+:YAlO3/Ta2O5-CaIn2S4/MoSe2-RGO photocatalyst in aqueous methanol solution displayed the highest photocatalytic hydrogen production activity under visible-light irradiation and after five-times photocatalytic hydrogen experiment the photocatalytic activity of Er3+:YAlO3/Ta2O5-CaIn2S4/MoSe2-RGO is basicly stable in the process of splitting methanol aqueous solutions.

Suggested Citation

  • Wei, Shengnan & Song, Yahui & Rong, Yang & Tang, Liang & Chen, Yang & Lu, Chunxiao & Zhang, Zhaohong & Wang, Jun, 2017. "A novel Z-scheme Er3+:YAlO3/Ta2O5-CaIn2S4/MoSe2-reduced graphene oxide photocatalyst with superior photocatalytic hydrogen evolution activity," Renewable Energy, Elsevier, vol. 111(C), pages 628-637.
    • Handle: RePEc:eee:renene:v:111:y:2017:i:c:p:628-637
    DOI: 10.1016/j.renene.2017.04.022
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    Cited by:

    1. Raheman AR, Shakeelur & Wilson, Higgins M. & Momin, Bilal M. & Annapure, Uday S. & Jha, Neetu, 2020. "CdSe quantum dots modified thiol functionalized g-C3N4: Intimate interfacial charge transfer between 0D/2D nanostructure for visible light H2 evolution," Renewable Energy, Elsevier, vol. 158(C), pages 431-443.
    2. Tang, Liang & Wang, Jing & Liu, Xudong & Shu, Xiaoqing & Zhang, Zhaohong & Wang, Jun, 2019. "Fabrication of Z-scheme photocatalyst, Er3+:Y3Al5O12@NiGa2O4-MWCNTs-WO3, and visible-light photocatalytic activity for degradation of organic pollutant with simultaneous hydrogen evolution," Renewable Energy, Elsevier, vol. 138(C), pages 474-488.

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