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The effect of different co-catalysts (CuO, MoS2 and Pt) on hydrogen production of Er3+:YAlO3/NaTaO3 by visible-light-induced methanol splitting

Author

Listed:
  • Lu, Chunxiao
  • Chen, Yang
  • Li, Yun
  • Ma, Chunhong
  • Guo, Yuwei
  • Li, Ying
  • Wang, Jun

Abstract

In this work, a high effective up-conversion luminescence agent (from infrared and visible light to ultraviolet light), Er3+:YAlO3, was synthesized by sol–gel method. And then, the CuO, MoS2 and Pt were adopted as co-catalysts and the NaTaO3 was used as bulk catalyst, and then the three corresponding visible-light photocatalysts, Er3+:YAlO3/CuO–NaTaO3, Er3+:YAlO3/MoS2–NaTaO3 and Er3+:YAlO3/Pt–NaTaO3, were successfully prepared by hydrothermal and direct mixing methods, respectively. Er3+:YAlO3, NaTaO3, Er3+:YAlO3/CuO–NaTaO3, Er3+:YAlO3/MoS2–NaTaO3 and Er3+:YAlO3/Pt–NaTaO3 were all characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The visible-light photocatalytic activities of Er3+:YAlO3/CuO–NaTaO3, Er3+:YAlO3/MoS2–NaTaO3 and Er3+:YAlO3/Pt–NaTaO3 were examined through photocatalytic hydrogen evolution from methanol aqueous solution under visible-light irradiation. The influence factors such as the contents of co-catalysts (CuO, MoS2 and Pt), heat-treated temperature and initial pH value on the visible-light photocatalytic hydrogen evolution activity of Er3+:YAlO3/CuO–NaTaO3, Er3+:YAlO3/MoS2–NaTaO3 and Er3+:YAlO3/Pt–NaTaO3 were studied. The results showed that the Er3+:YAlO3/MoS2–NaTaO3 with 0.2 wt% MoS2 in solution (pH = 6.0) with 5.0 wt% methanol displayed the highest visible light photocatalytic hydrogen production activity.

Suggested Citation

  • Lu, Chunxiao & Chen, Yang & Li, Yun & Ma, Chunhong & Guo, Yuwei & Li, Ying & Wang, Jun, 2015. "The effect of different co-catalysts (CuO, MoS2 and Pt) on hydrogen production of Er3+:YAlO3/NaTaO3 by visible-light-induced methanol splitting," Energy, Elsevier, vol. 93(P1), pages 749-757.
    • Handle: RePEc:eee:energy:v:93:y:2015:i:p1:p:749-757
    DOI: 10.1016/j.energy.2015.09.074
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    Cited by:

    1. Attia, Yasser & Samer, Mohamed, 2017. "Metal clusters: New era of hydrogen production," Renewable and Sustainable Energy Reviews, Elsevier, vol. 79(C), pages 878-892.
    2. Alami, Abdul Hai & Rajab, Bilal & Abed, Jehad & Faraj, Mohammed & Hawili, Abdullah Abu & Alawadhi, Hussain, 2019. "Investigating various copper oxides-based counter electrodes for dye sensitized solar cell applications," Energy, Elsevier, vol. 174(C), pages 526-533.

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