Cyan titania nanowires: Spectroscopic study of the origin of the self-doping enhanced photocatalytic activity
Catalysis Today(2017)
Abstract
•Hydrogen- (cyan) and oxygen-annealed (white) titania nanowires were compared.•Hydrogenation results in a major increase of photocatalytic activity.•XRD and RBS showed identical bulk crystal structure and atomic composition.•EPR revealed that the better photoactivity is due to 1 at% of Ti3+ surface defects.
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Key words
Titania nanowires,Ti3+ surface centers,EPR
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