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
王晟;高艳龙;王騊;王栋良;丁源维;许学飞;张晓龙;江国华
【期刊名称】《催化学报》 【年(卷),期】2011(032)009
【摘要】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@@SiO2by 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.%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. 【总页数】6页(1513-1518)
【关键词】二氧化硅;二氧化钛;纳米管;铂;光催化;甲醇;氧化 【作者】王晟;高艳龙;王騊;王栋良;丁源维;许学飞;张晓龙;江国华