Photocatalytic degradation of 1-octanol on anchored titanium oxide and on TiO{sub 2} powder catalysts
- Univ. of Osaka Prefecture (Japan); and others
The liquid-phase photocatalytic oxidative degradation of 1-octanol in oxygenated acetonitrile on highly dispersed titanium oxide catalysts anchored onto transparent Vycor glass was compared with that obtained on standard TiO{sup 2} powder. The anchored photocatalysts were prepared through the facile reaction between surface OH groups of Vycor glass and TiCl{sub 4}. UV irradiation of the anchored catalyst at room temperature led to the photocatalytic degradation of 1-octanol and the production of 1-octanal as the major product. The large surface area of the photocatalyst was one of the most important factors in achieving a high efficiency in the liquid-phase photocatalytic reaction. The specific photocatalytic activity per unit weight of titanium oxide of the highly dispersed anchored catalyst was much higher than that for the TiO{sub 2} powder because of the high activity of the charge transfer complex (Ti{sup 3+}-O{sup -}){sup *}. Furthermore, the filtration of the anchored photocatalysts from the liquid reactants was much easier than that of the small particles of TiO{sub 2} powder. 21 refs., 7 figs., 1 tab.
- OSTI ID:
- 223972
- Journal Information:
- Journal of Catalysis, Vol. 158, Issue 1; Other Information: PBD: Jan 1996
- Country of Publication:
- United States
- Language:
- English
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