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Efficient photoelectrochemical hydrogen production from bismuth vanadate-decorated tungsten trioxide helix nanostructures

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  • Xinjian Shi

    (School of Chemical Engineering and SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University)

  • Il Yong Choi

    (Pohang University of Science and Technology)

  • Kan Zhang

    (School of Chemical Engineering and SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University)

  • Jeong Kwon

    (School of Chemical Engineering and SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University)

  • Dong Yeong Kim

    (Pohang University of Science and Technology)

  • Ja Kyung Lee

    (Pohang University of Science and Technology)

  • Sang Ho Oh

    (Pohang University of Science and Technology)

  • Jong Kyu Kim

    (Pohang University of Science and Technology)

  • Jong Hyeok Park

    (School of Chemical Engineering and SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University)

Abstract

Tungsten trioxide/bismuth vanadate heterojunction is one of the best pairs for solar water splitting, but its photocurrent densities are insufficient. Here we investigate the advantages of using helical nanostructures in photoelectrochemical solar water splitting. A helical tungsten trioxide array is fabricated on a fluorine-doped tin oxide substrate, followed by subsequent coating with bismuth vanadate/catalyst. A maximum photocurrent density of ~5.35±0.15 mA cm−2 is achieved at 1.23 V versus the reversible hydrogen electrode, and related hydrogen and oxygen evolution is also observed from this heterojunction. Theoretical simulations and analyses are performed to verify the advantages of this helical structure. The combination of effective light scattering, improved charge separation and transportation, and an enlarged contact surface area with electrolytes due to the use of the bismuth vanadate-decorated tungsten trioxide helical nanostructures leads to the highest reported photocurrent density to date at 1.23 V versus the reversible hydrogen electrode, to the best of our knowledge.

Suggested Citation

  • Xinjian Shi & Il Yong Choi & Kan Zhang & Jeong Kwon & Dong Yeong Kim & Ja Kyung Lee & Sang Ho Oh & Jong Kyu Kim & Jong Hyeok Park, 2014. "Efficient photoelectrochemical hydrogen production from bismuth vanadate-decorated tungsten trioxide helix nanostructures," Nature Communications, Nature, vol. 5(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5775
    DOI: 10.1038/ncomms5775
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    Cited by:

    1. Tian, Tian & Jiang, Guiyuan & Li, Yunlu & Xiang, Wenjing & Fu, Wensheng, 2022. "Unveiling the activity and stability of BiVO4 photoanodes with cocatalyst for water oxidation," Renewable Energy, Elsevier, vol. 199(C), pages 132-139.
    2. Tayebi, Meysam & Lee, Byeong-Kyu, 2019. "Recent advances in BiVO4 semiconductor materials for hydrogen production using photoelectrochemical water splitting," Renewable and Sustainable Energy Reviews, Elsevier, vol. 111(C), pages 332-343.
    3. Fei He & Seunghyun Weon & Woojung Jeon & Myoung Won Chung & Wonyong Choi, 2021. "Self-wetting triphase photocatalysis for effective and selective removal of hydrophilic volatile organic compounds in air," Nature Communications, Nature, vol. 12(1), pages 1-12, December.

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