凡庆南，宋金玲，高文全，蔡颖
(内蒙古科技大学材料与冶金学院，内蒙古包头 014010)
摘要：本文通过溶胶-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，添加量为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(Scanning Electron Microscopy, SEM)和X射线能量色散谱(X-ray energy dispersive spectroscopy, EDS）分析得出TiO2:1%Fe样品为颗粒状，并由Ti、O和Fe元素组成。
关键词：TiO2；罗丹明B；可见光
中图分类号：X13 文献标识码:A
Synthesis of TiO2:Fe and the Catalytic Properties of RhBDegradationunder Visible-light Irradiation
FANQing-nan, SONGJin-ling ,GAOWen-quan, CAIYing
School of Material and Metallurgy, Inner Mongolia University of Science and Technology,Baotou, Inner Mongolia 014010, P.R.China
Abstract: 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.
Key words: TiO2；Rhodamine B (RhB)；Visible-light