磁载纳米TiO_2复合光催化材料的研究进展  

Research progress on magnetic TiO_2 composite Nano-photocatalysts

作　　者：杨静[1,2] 崔世海[1] 陈慧慧[1] 闵丹丹[1] 练鸿振[2] 

机构地区：[1]江苏省生物功能材料协同创新中心南京师范大学化学与材料科学学院,南京210023 [2]生命分析化学国家重点实验室、南京大学化学化工学院和现代分析中心,南京210093

出　　处：《环境化学》2014年第11期1930-1935,共6页Environmental Chemistry

基　　金：国家重点基础研究发展计划(973计划)(2009CB421601,2011CB911003);国家自然科学基金(21275069,21177061);江苏高校优势学科建设工程资助

摘　　要：磁载纳米TiO2复合光催化剂是一种无污染,制备成本低,催化活性高,在外加磁场下可迅速分离回收和重复使用的光催化材料,在废水的光催化降解中有着诱人的应用前景.本文综述了不同类型磁载纳米TiO2复合光催化材料的制备方法和光催化性能,总结了其在染料、农药、芳香烃及其衍生物、有害无机离子和有毒气体等各种环境污染物处理中的应用,并展望了磁载纳米TiO2复合光催化剂的发展方向.Magnetic TiO2 composite nanophotocalalyst is a type of important photocatalytic material,which not only has the merits of environmental friendliness, low-cost and high photocatalytic activity,but also can be separated by magnet and reused rapidly. It has wide and promising application prospect in the degradation of waste water contaminants. In this review,the preparation and photocatalytic performance of the magnetic TiO2 composite nanomaterials are summarized,and the application of these nanophotocalalysts in the treatment of waste waters contaminated by dyes,pesticides,aromatic hydrocarbons and their derivatives,harmful inorganic ions,and poisonous gases is also summarized. Finally,the direction of future development of magnetic and composite TiO2 nanoparticles is proposed.

关 键 词：磁分离 纳米二氧化钛 光催化降解 环境污染物 

分 类 号：O643.36[理学—物理化学]