纳米CeO2-TiO2复合介孔材料的制备与性能  

Preparation and Properties of Nano-CeO2 -TiO2 Mesoporous Materials

作　　者：丁士文[1] 张旭[1] 赵菁[2] 

机构地区：[1]河北大学化学与环境科学学院,河北保定071002 [2]石家庄职业技术学院化工系,河北石家庄050081

出　　处：《纳米科技》2008年第6期17-19,31,共4页

基　　金：河北省自然科学基金（No：B2005000097）

摘　　要：以TiCl4为原料，Ce（SO4）2-4H2o为掺杂剂，采用水热法制备了CeO2-TiO2和介孔材料，并利用X-射线衍射、透射电镜和N2吸附脱吸附实验等对样品进行了表征。光催化性能实验证明适量CeO2掺杂对TiO2的光催化效果有很大程度的提高，但是当掺杂量超过一定比例后反而会降低光催化效果，并且样品的焙烧时间和温度对样品的光催化效果也有一定的影响。Nanometric TiO2-CeO2 Mesoporous materials was prepared by Hydrothermal method by using TiCI4 as raw materials and Ce（SO4）2·4H2O as doping agents. The prepared samples are characterized by X-ray diffraction, TEM , and N2 adsorption/desorption methods. The results of photocatalytic experiment shows that with the increase of Ce concentration, photocatalytic activity of TiO2 was improved significantly. But when the doping level exceeds a definite proportion, the photocatalytic effect will fall down. Additionally, the baking time and the temperature also affect photocatalytic performance of the sample.

关 键 词：纳米TiO2介孔材料 铈掺杂 水热法制备 光催化性能 

分 类 号：TB33[一般工业技术—材料科学与工程]