中文摘要：

通过溶胶-凝胶法和水热法分别制备了锐钛矿的TiO2颗粒和TiO2纤维,并在可见光下降解罗丹明B以考察其催化性能,结果表明,TiO2颗粒的催化性能略好于TiO2纤维.通过溶胶-凝胶法原位复合一系列Fe以提高纯TiO2颗粒的催化性能,在可见光下降解罗丹明B的结果显示,添加质量分数为1％的TiO2 （TiO2∶1％ Fe）比纯TiO2的降解率提高10％.并进一步通过扫描电镜（SEM）和X射线能量色散谱分析得出TiO2：1％ Fe样品为颗粒状,并由Ti,O和Fe元素组成.

英文摘要：

The anatase TiO2 particles and TiO2 fibers were prepared by sol-gel method and hydrothermal method, respectively. Their catalytic properties were measured by RhB degradation under visible-light irradiation. The results indicate that the catalytic property of TiO2 particles is better than that of TiO2 fibers. A series of Fe were in-situ composed by sol-gel to increase the catalytic property of TiO2 particles. The results of RhB degradation under visible-light Irradiation show that the degradation ratio of TiO2 ： 1% Fe is 10% higher than that of pure TiO2. Moreover, the analyses of SEM and EDS display that the TiO2 ： 1% Fe sample exhibits particle-shape and is composed of Ti,O and Fe elements.