0.68% of solar-to-hydrogen efficiency and high photostability of organic-inorganic membrane catalyst

Wei Li (), Wen Duan, Guocheng Liao, Fanfan Gao, Yusen Wang, Rongxia Cui, Jincai Zhao and Chuanyi Wang ()
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Wei Li: Shaanxi University of Science and Technology
Wen Duan: Shaanxi University of Science and Technology
Guocheng Liao: Shaanxi University of Science and Technology
Fanfan Gao: Shaanxi University of Science and Technology
Yusen Wang: Shaanxi University of Science and Technology
Rongxia Cui: Shaanxi University of Science and Technology
Jincai Zhao: Chinese Academy of Sciences
Chuanyi Wang: Shaanxi University of Science and Technology

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract Solar-driven flat-panel H2O-to-H2 conversion is an important technology for value-added solar fuel production. However, most frequently used particulate photocatalysts are hard to achieve stable photocatalysis in flat-panel reaction module due to the influence of mechanical shear force. Herein, a highly active CdS@SiO2-Pt composite with rapid CdS-to-Pt electron transfer and restrained photoexciton recombination was prepared to process into an organic-inorganic membrane by compounding with polyvinylidene fluoride (PVDF). This PVDF networked organic-inorganic membrane displays high photostability and excellent operability, achieving improved simulated sunlight-driven alkaline H2O-to-H2 conversion activity (213.48 mmol m−2 h−1) following a 0.68% of solar-to-hydrogen efficiency. No obvious variation in its appearance and micromorphology was observed even being recycled for 50-times, which considerably outperforms the existing membrane photocatalysts. Subsequently, a homemade panel H2O-to-H2 conversion system was fabricated to obtain a 0.05% of solar-to-hydrogen efficiency. In this study, we opens up a prospect for practical application of photocatalysis technology.

Date: 2024
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DOI: 10.1038/s41467-024-51183-2

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