紫外光还原法制备铂填充硅钛复合纳米管及其光催化性能  

Preparation and Photocatalytic Performance of Pt-TiNT@@SiO_2 by UV Photoreduction

作　　者：王晟[1] 高艳龙[1] 王騊[1] 王栋良[1] 丁源维[1] 许学飞[1] 张晓龙[1] 江国华[1] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,浙江杭州310018

出　　处：《催化学报》2011年第9期1513-1518,共6页

基　　金：国家自然科学基金(50802088;31070888);浙江省杰出青年科学基金(R2101054);浙江省自然科学基金(Y4080392;Y4100045);浙江省钱江人才计划(2010R10023)~~

摘　　要：以SiO2包覆的TiO2纳米管(TiNT@@SiO2)为载体,以H2PtCl6为前驱体,采用紫外光还原法制备了Pt纳米粒子填充的TiNT@@SiO2材料(Pt-TiNT@@SiO2).并采用透射电镜、场发射扫描电镜、电子能谱和X射线衍射等手段对材料样品进行了表征,考察了制备时紫外光照时间和强度以及Pt填充量对其形貌的影响.结果表明,Pt填充量为1.5%时,Pt-TiNT@@SiO2样品的光催化活性最高.同时还探讨了管内光催化机理.The Pt nanoparticles-filled TiO2-semiconductor nanocomposite samples were prepared. By using SiO2-coated TiO2 nanotube （TiNT@@SiO2） as the support, Pt nanoparticles were successfully filled in TiNT@@SiO2 by a simple UV photoreduction method. The prepared Pt-TiNT@@SiO2 samples were characterized by transmission electron microscopy, field emission scanning electron microscopy, energy dispersive spectrometer, and X-ray diffraction. The photocatalytic activity of the samples for methanol oxidation shows that 1.5%Pt-TiNT@@SiO2 has the highest photo-activity. The mechanism of this inner-tube photocatalysis was discussed.

关 键 词：二氧化硅 二氧化钛 纳米管 铂 光催化 甲醇 氧化 

分 类 号：TB383.1[一般工业技术—材料科学与工程]