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 et al., "Modified Titania in the Photo-Assisted Oxidation of Chloroform", Materials Science Forum, Vols. 514-516, pp. 1385-1390, 2006