0.68% of solar-to-hydrogen efficiency and high photostability of organic-inorganic membrane catalyst.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 39117687.
- Also identified by DOI 10.1038/s41467-024-51183-2 and PMC identifier 11310485.
- Licence recorded as CC BY-NC-ND.
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Abstract
Solar-driven flat-panel H<sub>2</sub>O-to-H<sub>2</sub> 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@SiO<sub>2</sub>-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 H<sub>2</sub>O-to-H<sub>2</sub> conversion activity (213.48 mmol m<sup>-2</sup> h<sup>-1</sup>) 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 H<sub>2</sub>O-to-H<sub>2</sub> 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.