Preparation and properties on rare-earth element cerium doped nano-titanium dioxide photocatalyst
The nano-TiO2 doped with Ce was prepared by sol-gel method.The samples were analyzed by X-ray diffraction（XRD）,FT-IR,UV-Vis,PL,Nano-sizer nano particle size analyzer,etc.The photocatalytic activity of Ce-TiO2 was investigated at different doping dosage and different calcinated temperatures by measuring the degradation rate of methyl blue（MB） under the irradiation of fluorescent lamp,the results show that crystal phase of Ce-TiO2 samples are all mixed phase of anatase and rutile.The existence of the doped element Ce expands TiO2＇s spectrum absorption under the visible light,and increases the photocatalytic activity of TiO2.Meanwhile,the photocatalytic activity of the sample at pH=1.5,n（Ce）∶n（TiO2）=1∶300 and the calcinated temperature of 600℃ is the best,and it is obvious higher than that of P25.
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万方数据
维普
