Preparation and photocatalytic properties of Fe-doped TiO2 nanoparticles①
来源期刊：中南大学学报(英文版)2004年第2期
论文作者：陈晓青 杨娟玉 张俊山
文章页码：161 - 165
Key words：nanometer titanium dioxide; iron ion implantation; photocatalytic activity; paper-making wastewater
Abstract: Nanocrystalline Fe-doped TiO2 with size of 60 70 nm was prepared by a sol-gel technique, followed by freeze-drying treatment for 2 h. Thermogravimetric and differential thermal analyses, X-ray diffraction, scanning electron microscope, laser diffraction particle size analyzer and UV-Vis spectrophotometer technologies were used to characterize the product. The photocatalytic activities of the samples were evaluated by the degradation of wastewater of paper-mak-ing. The effects of Fe ion implantation on the photocatalytic activity of TiO2 were also discussed. The results show that the iron content plays an essential role in affecting the photocatalytic activity of the Fe-doped TiO2 and the optimum con-tent of Fe-doped is 0.05% (mass fraction). The photocatalytic activity of samples with lower content of Fe-doped is high-er than that of pure TiO2 in the treatment of paper-making wastewater. The photo-degradation effect of paper-making ef-fluent is the best by means of Fe-doped TiO2 with 0.05% Fe.
