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Enhanced Photoelectrochemical Performance of BiVO4 by a NiMoO4 Modification

  • Linmeng Wang
  • Shan Jia
  • Xiuquan GuEmail author
  • Yulong Zhao
  • Yinghuai Qiang
Article
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Abstract

In this work, porous BiVO4 thin films were deposited on the FTO glass through a spin-coating deposition method and their photoelectrochemical (PEC) properties were investigated. Further, the BiVO4 thin film was modified with a NiMoO4 thin layer for enhancing its PEC activity. It is demonstrated that the applied bias photo-to-current conversion efficiency is increased by 63% after a surface modification, which is ascribed to both the formation of a p–n junction and the suppressed carrier recombination rate by terms of the electrochemical impedance spectroscopy. Finally, a schematic band model is also proposed to clarify the charge carrier transfer mechanism which is responsible for the enhanced PEC performance.

Keywords

NiMoO4 BiVO4 photoelectrochemical water splitting 
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Notes

Acknowledgments

This work is financially supported by Postgraduate Research and Practice Program of Education and Teaching Reform of CUMT (No. YJSJG-2018-042).

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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Linmeng Wang
    • 1
  • Shan Jia
    • 1
  • Xiuquan Gu
    • 1
    Email author
  • Yulong Zhao
    • 1
  • Yinghuai Qiang
    • 1
  1. 1.School of Materials Science and EngineeringChina University of Mining and TechnologyXuzhouChina

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