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

Autor:	Heinz Gerischer
Rok vydání:	1995
Předmět:	Aqueous solution Chemistry General Chemical Engineering Quantum yield Electron Photochemistry Light intensity Chemical physics Yield (chemistry) Electrochemistry Photocatalysis Particle Particle size Physics::Chemical Physics
Zdroj:	Electrochimica Acta. 40:1277-1281
ISSN:	0013-4686
DOI:	10.1016/0013-4686(95)00058-m
Popis:	A model for the kinetics of photocatalytic processes on spherical TiO2 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::31ed1df09584f40e8004dc384ddd2ee2 https://doi.org/10.1016/0013-4686(95)00058-m Zobrazit plný text záznamu Full Text from ScienceDirect