Photocatalytic properties of TiO2 thin films prepared by microarc oxidation

Titanium dioxide photocatalytic thin films were prepared using method of microarc oxidation. Effects of concentration of methylene blue (MB), object (congo red, MB, methyl orange, methyl red) intensity of illumination, accelerator concentration, reaction time and oxygen concentration on photocatalytic capability were studied. The results show that photocatalytic efficiency for MB solution is better than that of other organic tinctures. And Photocatalytic degradation ratio for MB solution increases with increase of intensity of illumination, accelerator concentration, reaction time and oxygen concentration. Dynamics of photocatalytic degradation for MB solution is studied with using UV light on titanium dioxide photocatalytic thin film. The results show that photocatalytic degradation double ratio for MB solution 2.5 mg/L was improved with using the prepared titanium dioxide catalyzer. The photocatalytic process followed the first order kinetics on static condition system.