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- W2519481504 abstract "The current study demonstrates a potential method for maximum utilization of the entire visible light region of the solar spectrum by designing a plasmonic-metals semiconductor composite. A combination of Ag+Au nanoclusters would broaden the visible-light absorption at least between 400 and 650 nm. This hypothesis was evaluated through solar water splitting (SWS) activity of Au–TiO2, Ag–TiO2, and Ag on Au-TiO2 (AgAuT) composites. AgAuT bimetallic nanocomposite shows the maximum apparent quantum yield of 3.3 % with hydrogen generation (718 μmol h.g−1) from aqueous methanol, and overall water splitting activity (7 μmol g.h−1, AQY=0.04 %) under one sun conditions. Enhanced photocatalytic activity of AgAuT is partly attributed to the formation of hot electrons. A thin layer of Ag coating on Au particles leads to a core–shell morphology with Au in the core. Fermi level equilibration between metal and titania, and Schottky junction formation are directly demonstrated. The strong electronic interaction between Ag and Au, and with TiO2 is evident from its electron rich character and confirmed by Raman spectroscopy, X-ray photoelectron spectroscopy, photoluminescence, and high-resolution TEM measurements. Electronic factors seem to be responsible for the high rate of hydrogen production." @default.
- W2519481504 created "2016-09-23" @default.
- W2519481504 creator A5030363496 @default.
- W2519481504 creator A5079822370 @default.
- W2519481504 date "2016-09-15" @default.
- W2519481504 modified "2023-09-30" @default.
- W2519481504 title "Bimetallic and Plasmonic Ag-Au on TiO<sub>2</sub>for Solar Water Splitting: An Active Nanocomposite for Entire Visible-Light-Region Absorption" @default.
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- W2519481504 doi "https://doi.org/10.1002/cctc.201600937" @default.
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