纳米TiO_2薄膜的制备及其光催化性能研究  

Studies on Preparation and Photocatalysis Activity of Nanostructure TiO_2 Thin Films

作　　者：郝丽媛[1] 周炳卿[1] 陈霞[2] 韩兵[1] 那日苏[1] 王立娟[1] 

机构地区：[1]内蒙古师范大学物理与电子信息学院功能材料物理与化学自治区重点实验室,呼和浩特010022 [2]内蒙古科技大学包头医学院技术学院物理教研室,包头014010

出　　处：《材料导报（纳米与新材料专辑）》2010年第1期60-63,共4页

基　　金：国家自然科学基金资助项目(50662003);内蒙古自然科学基金资助项目(2009MS0806)

摘　　要：采用溶胶-凝胶(Sol-gel)法在玻璃衬底上制备了纳米TiO_2薄膜。采用X射线衍射仪(XRD)、紫外可见-光谱(UV/vis)和原子力显微镜(AFM)对纳米TiO_2进行表征。结果表明,经300～700℃退火得到的TiO_2粉体呈锐钛矿相,经800℃退火得到了锐钛矿相与金红石相的混合晶相,经900℃退火完全转化为金红石相。薄膜表面粒子分布均匀,表面平均粗糙度为1.54nm,该薄膜具有较高的光催化活性,可直接用于光催化降解有机物等领域,具有广阔的应用前景。The nanostructure TiO2 thin films are prepared on glass substrate by sol-gel method. The properties are characterized by XRD, UV/vis spectra and AFM, respectively. The results show that the powdery TiO2 structure turns into an anatase phase when annealing from 300℃ to 700℃ ,it turns into a mixed phase structure of anatase and rutile when annealing at 800℃ ,and it turns into a single rutile phase when annealing at 900℃. The particles distribute on the film surface are homogeneous and the average surface roughness is 1.54nm.The TiO2 thin film has a very good photocatalysis. It can be applied in many fields, such as photocatalytic degradation of organic compounds, and has a potential application value.

关 键 词：TIO2薄膜 溶胶-凝胶法光催化 

分 类 号：TQ134.11[化学工程—无机化工]