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- W2891479780 abstract "In this research, by means of electrochemical cyclic voltammetries (CVs), the pathways of charge carrier interfacial transfer (IT) from TiO2 and Au/TiO2 rutile nanorod (NR) arrays to electrolyte were studied. For pure TiO2, the electron IT to O2 takes place via both the conduction band (CB) states and the surface states (SS). The UV light illumination increases the electron IT via CB states, but inhibits that via SS pathway. The CV results also evidenced that the Au nanoparticles (NPs) on TiO2 surface play dual roles of electron storage and electron IT pathway. Our results showed that the Au-induced defects, locating at Au/TiO2 perimeter, form an important additional pathway for electron IT to O2. UV light illumination increases the electron IT via Au NPs and Au-induced SS. In addition, we also revealed a special IT pathway of hot holes via the Au/TiO2 perimeter contributes to the full water oxidation under visible light illumination. Therefore, the Au/TiO2 perimeter region plays dual roles in the IT of both electrons and holes. Basing on these results, the IT pathways of charge carriers in Au/TiO2 were illustrated from the viewpoint of energy band diagram. The photocatalytic degradation of methyl orange, photoelectrochemical oxidation of water, and photogeneration of free hydroxyl radicals (OH) were studied under UV and visible light illuminations. The association between the charge carrier IT pathways and the photocatalytic properties was also discussed." @default.
- W2891479780 created "2018-09-27" @default.
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- W2891479780 date "2019-01-01" @default.
- W2891479780 modified "2023-10-18" @default.
- W2891479780 title "Charge carrier interfacial transfer pathways from TiO2 and Au/TiO2 nanorod arrays to electrolyte and the association with photocatalysis" @default.
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- W2891479780 doi "https://doi.org/10.1016/j.apsusc.2018.09.031" @default.
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