稳定TiO_2混晶溶胶的制备及其光催化活性  

Preparation of Stable TiO_2 Sol Containing Anatase-Rutile Mischcrystal Grains and Its Photocatalytic Activity

作　　者：陈凤英[1] 

机构地区：[1]浙江大学医学院附属妇产科医院,浙江杭州310006

出　　处：《稀有金属材料与工程》2008年第A02期34-37,共4页Rare Metal Materials and Engineering

基　　金：浙江省科技计划(2005C24005)

摘　　要：采用溶胶-凝胶法分别制备了ZrO2溶胶和锐钛矿-金红石型混晶的TiO2溶胶,并将两种溶胶按一定比例混合后浸渍提拉涂膜。利用X射线衍射(XRD)、透射电镜(TEM)、粒度测试、扫描电镜(SEM)、紫外可见光谱(UV-Vis)等分析手段研究了ZrO2溶胶的加入对TiO2混晶溶胶及薄膜的影响,并对薄膜的光催化活性进行了考察。结果表明ZrO2能有效地细化TiO2溶胶中的粒子,并保持稳定,同时还使薄膜的光催化活性得到一定程度的提高。因此,该溶胶在环境净化领域将具有较好的应用前景。By means of sol-gel method, ZrO2 sol and TiO2 sol containing anatase-rutile mischcrystal grains were prepared. The two sols were mixed, and the films were obtained from the resultant sols by a dip-coating technique. X-ray diffraction （XRD）, transmission electron microscopy （TEM）, scanning electron microscopy （SEM）, test of particle size distribution and ultraviolet and visible （UV-Vis） spectra were adopted to analyze as-prepared sols and thin films, and the photocatalytic activities of the thin films were also tested. The results show that ZrO2 sol can induce an increase in the stability of TiO2 sol as well as the photocatalytic activity, and thus this sol will have great potential applications in environment protection.

关 键 词：溶胶-凝胶法 二氧化钛 二氧化锆 稳定性 光催化 

分 类 号：O643.36[理学—物理化学]