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Onion-ring-like g-C3N4 modified with Bi3TaO7 quantum dots: A novel 0D/3D S-scheme heterojunction for enhanced photocatalytic hydrogen production under visible light irradiation

Author

Listed:
  • Shi, Weilong
  • Sun, Wei
  • Liu, Yanan
  • Li, Xiangyu
  • Lin, Xue
  • Guo, Feng
  • Hong, Yuanzhi

Abstract

Photocatalytic H2 evolution is a clean and renewable process that converts solar energy into chemical energy through water splitting under solar light irradiation. Herein, zero-dimensional (0D) Bi3TaO7 (BTO) quantum dots/three-dimensional (3D) onion-ring-like g-C3N4 (OR-CN) S-scheme heterojunction catalyst is constructed to simulate the production of hydrogen by photocatalysis under sunlight irradiation through a solvothermal method for photocatalytic hydrogen production under visible light irradiation. Results reveal that BTO/OR-CN heterojunction exhibited much higher photocatalytic activity compared to the pure BTO and OR-CN, in which the optimal loading amount 0.3% BTO/OR-CN composite endows the optimal photocatalytic H2 evolution rate of 4891 μmol g−1 with the apparent quantum yield (AQY) at 420 nm of 4.1%. The enhancement of excellent photocatalytic H2 performance is due to the formation of S-scheme heterojunction structure between 0D BTO quantum dots and 3D OR-CN, which promotes the separation and migration of photogenerated carriers and significantly enhances the visible-light absorption capacity. This work offers a viable strategy to construct 0D/3D S-scheme heterojunction photocatalyst in the application of photocatalytic field under visible light.

Suggested Citation

  • Shi, Weilong & Sun, Wei & Liu, Yanan & Li, Xiangyu & Lin, Xue & Guo, Feng & Hong, Yuanzhi, 2022. "Onion-ring-like g-C3N4 modified with Bi3TaO7 quantum dots: A novel 0D/3D S-scheme heterojunction for enhanced photocatalytic hydrogen production under visible light irradiation," Renewable Energy, Elsevier, vol. 182(C), pages 958-968.
    • Handle: RePEc:eee:renene:v:182:y:2022:i:c:p:958-968
    DOI: 10.1016/j.renene.2021.11.030
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    References listed on IDEAS

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    1. Liu, Enli & Lin, Xue & Hong, Yuanzhi & Yang, Lan & Luo, Bifu & Shi, Weilong & Shi, Junyou, 2021. "Rational copolymerization strategy engineered C self-doped g-C3N4 for efficient and robust solar photocatalytic H2 evolution," Renewable Energy, Elsevier, vol. 178(C), pages 757-765.
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    Cited by:

    1. Belessiotis, George V. & Kontos, Athanassios G., 2022. "Plasmonic silver (Ag)-based photocatalysts for H2 production and CO2 conversion: Review, analysis and perspectives," Renewable Energy, Elsevier, vol. 195(C), pages 497-515.
    2. Ding, Qun & Zou, Xuejun & Ke, Jun & Dong, Yuying & Cui, Yubo & Lu, Guang & Ma, Hongchao, 2023. "S-scheme 3D/2D NiCo2O4@g-C3N4 hybridized system for boosting hydrogen production from water splitting," Renewable Energy, Elsevier, vol. 203(C), pages 677-685.
    3. Guo, Feng & Chen, Zhihao & Shi, Yuxing & Cao, Longwen & Cheng, Xiaofang & Shi, Weilong & Chen, Lizhuang & Lin, Xue, 2022. "A ragged porous hollow tubular carbon nitride towards boosting visible-light photocatalytic hydrogen production in water and seawater," Renewable Energy, Elsevier, vol. 188(C), pages 1-10.

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    More about this item

    Keywords

    Bi3TaO7; g-C3N4; Visible light; Hydrogen; Photocatalysis; S-scheme;
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