Treaed with alkali,the surface of titanium dioxide became coarse and the specific surface area was increased, surface hydroxy group was decreased,and the photocatalysis of titanium dioxide was improved obviously.

The effects of composition of(isopropyl) alcohol-water solution,dispersant PEG and reaction temperature on the yield,size,morphology and photocatalytic property of titania particles were investigated.

The results indicate that TiO_2 thin films are composed of spherical nanoparticles with mono-disperse size;crystal size,hydrophilicity and photocatalytic of TiO_2 thin films are improving with heating temperature increasing.

The present study of titanium dioxide of the world were primarily introduced in this paper,the discussion focused upon the improvement of the photocatalytic of TiO2.

Nano-TiO2 co-doped with La3+-Fe3+ was prepared by sol-gel method and the photocatalystic activity under ultra-violet light was evaluated by photocatalytic degradation of methyl blue.

Nano-TiO_2 co-doped with Er-Ce was prepared by sol-gel method and the photocatalystic activity under ultra-violet light was evaluated by photocatalytic degradation of methyl blue.

In recent years,it has attracted a great deal of attention that how to improve the photocatalytic activity of TiO_2 and prepare the films which possess high photocatalytic activity and photo-induced amphilicity.

Recent developments in the photocatalytic activity of nonmetal-doped TiO_2 under visible light irradiation;

Analysis on photocatalytic activity and surface energy band structure of(Ag,Nd)/TiO_2 nanometer materials;

Study on photocatalytic activity of nano-TiO_2 prepared by sol-gel method;