Application of Metal-polyphenol Surface Treatment to Supramolecular Xanthene Dye Hydrogen Photosynthesis System
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Though eco-friendly photocatalysis system using solar energy is being studied as an attractive approach for green hydrogen industry, current photocatalytic technologies are still based on artificial inorganic or organic semiconductors. Herein, inspired by natural photosynthetic systems, we presented dye-sensitized photocatalysis systems consist of organic supramolecular Xanthene chromophore, which photocatalytic ability was enhanced via metal-phenolic surface treatment. The polyphenol surface treatment on self-assembled amphiphilic rhodamine B nanospheres showed high interfacial affinity and photocatalytic performances through reinforcing its fluorescence quenching property. The supramolecular polyphenol-rhodamine B complexes with Pt nanoparticles and Shewanella oneidensis MR-1, the hydrogenase-owned microbe, exhibited marked improvement in the photocatalytic hydrogen production, which demonstrated the feasibility of metal-phenolic coating treatment to further enhance the performance of various chromophore-based photocatalytic systems.