Journal
CHEMICAL PHYSICS
Volume 339, Issue 1-3, Pages 133-137Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chemphys.2007.05.010
Keywords
kinetics; TiO2; photocatalysis; recombination; charge transfer; infrared absorption
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Electron kinetics of nine TiO2 catalysts were compared in a microsecond time domain. Each catalyst was band-gap excited with an UV light pulse, and electron-induced absorption of mid infrared light was observed as a function of time delay. The probability of electron-hole recombination in the bulk, electron attachment to adsorbed oxygen, and hole attachment to adsorbed methoxy species was estimated. (C) 2007 Elsevier B.V. All rights reserved.
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