多孔Ag/TiO_2的制备及其光催化性研究  

Study on the preparation of porous Ag/TiO_2 and its photocatalytic performance

作　　者：罗妮[1] 王宁[1] 张昭[1] 

机构地区：[1]四川大学化学工程学院,四川成都610065

出　　处：《功能材料》2007年第7期1143-1145,1148,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50474071;50274056)

摘　　要：以工业TiOSO4溶液水解得到的多孔偏钛酸为载体,通过光催化还原法制备了多孔Ag/TiO2光催化剂。用XRD、SEM、EDS及低温氮吸附脱附法对样品进行了表征。以光催化氧化降解亚甲基蓝为目标反应,考察了不同制备条件对样品光催化活性的影响。结果表明,制备的Ag/TiO2为负载有非晶态纳米银粒的锐钛矿型TiO2光催化剂,比表面积高达197m2/g,其光催化活性远优于未载银的TiO2。Porous metatitanic acid isolated from hydrolysis reaction of industrial TiOSO4 solution as carrier,porous Ag/TiO2 photocatalyst was prepared via photocatalytic reduction reaction process.The prepared Ag/TiO2 was characterized by means of XRD,SEM,EDS and N2 adsorption-desorption isotherm.The effects of preparing conditions on photocatalytic activity of the Ag/TiO2 were examined through the photocatalytic degradation reaction of methylene blue.The result shows that Ag/TiO2 is anatase TiO2 loaded amorphous nano-particle silver,with a specific surface area of 197m^2/g.The photocatalytic performance of Ag/TiO2 is better than alone TiO2.

关 键 词：二氧化钛 银 光催化 多孔材料 

分 类 号：O614.41[理学—无机化学] TB383[理学—化学]