INFLUENCE OF THE MORPHOLOGY OF POROUS ANODIC ALUMINA FILMS ON PHOTOCATALYTIC ACTIVITY OF TITANIA SOL-GEL DERIVED INSIDE THEM

Sol-gel derived titania in porous anodic alumina film has been demonstrated as an efficient photocatalytic coating. Its photocatalytic performance after calcination at 400 °C correlates with the size of the pores and the thickness of the porous alumina film providing strong photocatalytic activity for the porous alumina films of 1.5 µm thickness with a size of the pores of 60-70 nm after deposition of the titania xerogel.