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Interfacial chemical bond and internal electric field modulated Z-scheme Sv-ZnIn2S4/MoSe2 photocatalyst for efficient hydrogen evolution

Author

Listed:
  • Xuehua Wang

    (College of Materials Science and Engineering, Qingdao University of Science and Technology)

  • Xianghu Wang

    (Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE. College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology)

  • Jianfeng Huang

    (School of Material Science and Engineering, International S&T Cooperation Foundation of Shaanxi Province, Xi’an Key Laboratory of Green Manufacture of Ceramic Materials, Shaanxi University of Science and Technology)

  • Shaoxiang Li

    (Shandong Engineering Technology Research Center for Advanced Coating, Qingdao University of Science and Technology)

  • Alan Meng

    (Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE. College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology)

  • Zhenjiang Li

    (College of Materials Science and Engineering, Qingdao University of Science and Technology
    Shandong Engineering Technology Research Center for Advanced Coating, Qingdao University of Science and Technology
    College of Sino-German Science and Technology, Qingdao University of Science and Technology)

Abstract

Construction of Z-scheme heterostructure is of great significance for realizing efficient photocatalytic water splitting. However, the conscious modulation of Z-scheme charge transfer is still a great challenge. Herein, interfacial Mo-S bond and internal electric field modulated Z-scheme heterostructure composed by sulfur vacancies-rich ZnIn2S4 and MoSe2 was rationally fabricated for efficient photocatalytic hydrogen evolution. Systematic investigations reveal that Mo-S bond and internal electric field induce the Z-scheme charge transfer mechanism as confirmed by the surface photovoltage spectra, DMPO spin-trapping electron paramagnetic resonance spectra and density functional theory calculations. Under the intense synergy among the Mo-S bond, internal electric field and S-vacancies, the optimized photocatalyst exhibits high hydrogen evolution rate of 63.21 mmol∙g−1·h−1 with an apparent quantum yield of 76.48% at 420 nm monochromatic light, which is about 18.8-fold of the pristine ZIS. This work affords a useful inspiration on consciously modulating Z-scheme charge transfer by atomic-level interface control and internal electric field to signally promote the photocatalytic performance.

Suggested Citation

  • Xuehua Wang & Xianghu Wang & Jianfeng Huang & Shaoxiang Li & Alan Meng & Zhenjiang Li, 2021. "Interfacial chemical bond and internal electric field modulated Z-scheme Sv-ZnIn2S4/MoSe2 photocatalyst for efficient hydrogen evolution," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-24511-z
    DOI: 10.1038/s41467-021-24511-z
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    Cited by:

    1. Peng, Jiaru & Han, Yue & Ma, Dingxuan & Zhao, Ruiyang & Han, Jishu & Wang, Lei, 2023. "Hollow Cd0.9In0.1Se/Cu2MoS4 nanocube S-scheme heterojunction towards high photocatalytic hydrogen production," Renewable Energy, Elsevier, vol. 212(C), pages 984-993.
    2. Lakhera, Sandeep Kumar & Rajan, Aswathy & T.P., Rugma & Bernaurdshaw, Neppolian, 2021. "A review on particulate photocatalytic hydrogen production system: Progress made in achieving high energy conversion efficiency and key challenges ahead," Renewable and Sustainable Energy Reviews, Elsevier, vol. 152(C).

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