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Band-gap engineering of porous BiVO4 nanoshuttles by Fe and Mo co-doping for efficient photocatalytic water oxidation

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Abstract

Co-doping of metal ions in semiconductor photocatalysts is a promising strategy to promote photocatalytic activity due to its expected synergistic effects. In this study, we demonstrated the first synthesis of uniform Fe and Mo co-doped BiVO4 (Fe/Mo-BVO) porous nanoshuttles (PNSs) through a simple solvothermal method combined with a subsequent impregnation thermal treatment. It has been discovered that the incorporation of Fe and Mo into the BVO lattice not only influences the shuttle-like morphology and porous structure but also modifies the band structure of the pristine BVO; this consequently boosts the photocatalytic performance of BVO. The as-prepared Fe/Mo-BVO PNSs exhibit significantly enhanced photoactivity for water oxidation under visible-light irradiation, and an average O2 evolution rate of up to 191.5 μmol h−1 g−1 is obtained, which is nearly 1.5 and 17 times higher than the rates obtained for Mo-doped BVO and pristine BVO, respectively. Density functional theory (DFT) calculations were also employed to further investigate the electronic structure of the co-doped products.

Graphical abstract: Band-gap engineering of porous BiVO4 nanoshuttles by Fe and Mo co-doping for efficient photocatalytic water oxidation

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Publication details

The article was received on 21 Sep 2017, accepted on 19 Oct 2017 and first published on 20 Oct 2017


Article type: Research Article
DOI: 10.1039/C7QI00588A
Citation: Inorg. Chem. Front., 2017, Advance Article
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    Band-gap engineering of porous BiVO4 nanoshuttles by Fe and Mo co-doping for efficient photocatalytic water oxidation

    R. Liu, J. Ren, D. Zhao, J. Ning, Z. Zhang, Y. Wang, Y. Zhong, C. Zheng and Y. Hu, Inorg. Chem. Front., 2017, Advance Article , DOI: 10.1039/C7QI00588A

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