Investigation of the Effect of Heat treatment on Particle Size,Crystal Structure and Photocatalytic Activity of TiO2 Nanoparticle

The photocatalytic degradation of C.I. Acid Red 88 (AR88), an anionic monoazo dye of acid class, in aqueous solutions was investigated with heat treated TiO2 powder. The results indicate that the heat treated photocatalist at 500 °C within 2 h shows the highest photocatalytic activity which can effectively degrade AR88 under UV-irradiation. An increase in calcinations temperature led to a reduction in TiO2 activity, which may be related to the anatase-rutille phase transformation.

Keywords:

TiO2 nanoparticle , Heat treatment , Photocatalytic activity , C.I. Acid Red 88