TiO_2/硅藻土复合材料的制备与光催化性能研究  

Preparation of TiO_2/Diatomite Composite and Its Photocatalytic Activity

作　　者：严继康[1] 曹加龙[1] 黄思仁[1] 刘王[1] 阚玲[1] 

机构地区：[1]昆明理工大学材料科学与工程学院,云南昆明650093

出　　处：《昆明理工大学学报（自然科学版）》2012年第6期28-32,42,共6页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：云南省自然科学基金(2008ZC014M);云南省大学生创新创业训练计划项目;昆明理工大学科研基金(2010-08)

摘　　要：本文研究了硅藻土负载TiO2复合材料的制备工艺和光催化性能.以钛酸四丁酯和硅藻土为原材料,采用溶胶-凝胶法制备了TiO2/硅藻土复合光催化材料.采用扫描电镜(SEM)和X射线衍射仪(XRD)对复合材料进行了显微结构和物相分析,并对复合材料进行了紫外-可见光吸收光谱分析,研究了TiO2含量和煅烧温度对TiO2/硅藻土复合材料的光催化性能的影响.研究结果表明:TiO2含量37wt%,煅烧温度为600℃,其TiO2负载情况良好,TiO2/硅藻土复合材料对可见光区的吸收强度增加,提高了TiO2催化剂的光催化活性.The preparation and photocatalytic properties of TiO2/diatomite composite material were investigated.Using tetrabutyl titanate and diatomite as raw material,the TiO2/diatomite photocatalysis composite material were prepared by sol-gel method.Microstructure and crystal phase of the composite material were characterized by scanning electron microscopy（SEM） and X-ray diffraction（XRD）.The ultraviolet-visible absorption spectra of composites were analysed.Meanwhile,we also researched effects of TiO2 content and the calcined temperature on the photocatalytic properties of TiO2/diatomite composite material.The experimental results show that TiO2 particles can well load in diatomite of 37wt%TiO2/diatomite composite material calcined at 600℃.TiO2/diatomite composite can increase the visible light absorption strength and improve the photocatalytic activity of TiO2 catalyst.

关 键 词：TIO2 硅藻土 复合材料 溶胶-凝胶法 光催化性能 

分 类 号：TB332[一般工业技术—材料科学与工程]