Influence of different aluminum salts on the photocatalytic properties of Al doped TiO nanoparticles towards the degradation of AO7 dye.

Three kinds of Al-TiO samples and pure TiO samples were synthesized via a modified polyacrylamide gel route using different aluminum salts, including Al(SO)∙18HO, AlCl, and Al(NO)∙9HO under identical conditions. The influence of different aluminum salts on the phase purity, morphologies, thermal stability of anatase and photocatalytic properties of the as-prepared Al-TiO nanoparticles were studied. The energy gap (Eg) of Al-TiO nanoparticles decreases due to Al ion doping into TiO.