Photocatalytic study of P25 and mesoporous titania in aqueous and gaseous environment

The photocatalytic activity of commercial P25 and mesoporous titania, synthesized following the Evaporation Induced Self Assembly procedure (EISA), is studied in aqueous and gaseous environment. In aqueous environment, the activity of mesoporous titania is inferior to the activity of P25 due to retarded diffusion kinetics. On the other hand, in gaseous environment, diffusion in the mesoporous channels is less restricted resulting in a better photocatalytic activity for mesoporous titania in comparison to P25.