Investigation of photocatalytic behavior of nano TiO2 coated on high purity aluminum substrate

Nowadays use of semiconductors in particular titania in photocatalytic activities has been a lot of interest. Among many candidates for photocatalysis، TiO2 is almost the only material suitable for industrial uses. Conventional powder catalysts suffer from disadvantages in stirring during the reaction and in separation after the reaction. Preparation of the coatings make it possible to overcome these disadvantages. In this study، nano-titania coatings was prepared by sol gel-dip coating onto the high purity aluminum surface and degradation of methylene blue as a dye pollutant، was investigated in the presence of TiO2 thin films. The anodizing process is used to create nanometer pores and increase surface roughness and for these reasons، the degradation of methylene blue increase significantly In this research، The structure and composition of the coatings were characterized by means of X-ray Diffraction (XRD)، Scanning Electron Microscopy (SEM) and UV-Visible Spectrophotometery (UV-Vis).