The film prepared at low temperature was amorphous tio2 and it ' s photocatalysed efficiency was very low
2.
With the carrier gas flux rising , the film ' s thickness and the degree of crystallization increase . the band gap decreased little , and the photocatalysed efficiency was enhanced
3.
Excessive or less n2o flux would lead the falling down of photocatalysed efficiency under the uv light irradiation . with the doping of n , the photocatalysed efficiency under visible light irradiation was improved obviously
4.
When the film is deposited at 450 , a kind of square substance exists on the surface of it . it is identified as na0 . 23 tio2 . experiments has proved that it has a negative effect on the photocatalysed efficiency , but it has no influence on the hydrophilicity
5.
With the subtrate temperature ' s increasing , the reaction rate increased , the crystal type was transfered from anatase to rutile , the roughness increased , causing the increase in hydropilicity . when substrates " temperature ranged from 450 ~ 550 , the tio2 films were composed with the mixture of rutile and anatase , and the photocatalysed efficiency was the best
6.
In this paper a comprehensive introduction of titanium dioxide film , which was focused on photocatalysis and hydrophilicity , had been given . the research background , the self - clean characteristic and some kinds of preparation methods were discussed . a summary about the factors which affect the photocatalysed efficiency and hydrophilicity was made
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