Abstract
In order to improve the photocatalytic efficiency of TiO2, through adding different concentration of Sn ion, the photocatalytic performances of TiO2 thin films are changed. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) spectrum of TiO2 thin films before and after doping Sn ion are compared, and the transmission spectrum and optical absorption spectrum of TiO2 thin film are analyzed. The results show that: after the implantation of Sn ion, there is a new compound Ti1-xSnxO2 on the TiO2 film’s surface, which has a higher photocatalytic activity than pure TiO2. In addition, Sn/TiO2 film has broaden the scope of its light response after ion implantation, so that it can be more effectively in using light source to send out the photons of longer waveband, and makes the photocatalytic activity of Sn/TiO2 thin films increase.
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