Modified Titania in the Photo-Assisted Oxidation of Chloroform
Degussa P-25 TiO2 powder was used as a catalyst in the photocatalytic oxidation of organics. With the objective of promoting a more effective electron-hole separation upon irradiation, the catalyst was modified with small amounts of platinum. Characterisation of the powders was done by X-Ray diffraction and SEM. Chloroform was used as a model molecule and its degradation followed using selective electrodes, with excellent results for the modified titania. Langmuir-Hinselwood kinetic was used to describe the heterogeneous oxidation of chloroform on TiO2, for low solute concentrations.
Paula Maria Vilarinho
R. Gouveia, R. A. Silva, C. M. Rangel, "Modified Titania in the Photo-Assisted Oxidation of Chloroform", Materials Science Forum, Vols. 514-516, pp. 1385-1390, 2006