Investigation of the effect of operational parameters and SnO2-coupling on the photocatalytic activity of TiO2

Abstract

The effect of different operational parameters in UV/TiO 2 process, such as initial dye concentration (20-50 mg l ) as photocatalysts were employed for decolorization at different solution thicknesses. The results showed that the coupled particles were not much different from single TiO 2 system at the solution thickness of 4.5 cm in a batch reactor. But the coupled system was more effective when the solution thickness was reduced to 2.5 cm. Over 90% of decolorization occurs at the solution thickness of 1.1 cm after 30 min of irradiation while 90% decolorization takes place at the solution thickness of 4.5 cm after 100 min of irradiation.