✦ LIBER ✦

Photocatalysis in aqueous solution with small TiO2 particles and the dependence of the quantum yield on particle size and light intensity

✍ Scribed by H. Gerischer

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 472 KB
Volume: 40
Category: Article
ISSN: 0013-4686
DOI: 10.1016/0013-4686(95)00058-m

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✦ Synopsis

A model for the kinetics of photocatalytic processes on spherical TiO, particles is developed. The quantum yield for the photooxidation of organic molecules by oxygen in aqueous solution is derived for two cases. In one case the yield is limited by surface recombination, in the other case by a reverse reaction of electrons with the first oxidation product by holes. It is shown that the quantum yield increases with decreasing illumination intensity and size of the particle.

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