催化学报

催化学报 ›› 2011, Vol. 32 ›› Issue (9): 1513-1518.DOI: 10.3724/SP.J.1088.2011.10501

• 研究论文 • 上一篇    下一篇

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   

  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
  • 收稿日期:2011-05-04 修回日期:2011-06-26 出版日期:2011-09-09 发布日期:2015-01-24

Preparation and Photocatalytic Performance of Pt-TiNT@@SiO2 by UV Photoreduction

WANG Sheng*, GAO Yanlong, WANG Tao, WANG Dongliang, DING Yuanwei, XU Xuefei, ZHANG Xiaolong, JIANG Guohua   

  1. Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education of PRC, Zhejiang Sci-Tech University, Hangzhou 310018, Zhejiang, China
  • Received:2011-05-04 Revised:2011-06-26 Online:2011-09-09 Published:2015-01-24

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1143

被引次数

9

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.

关键词: 二氧化硅, 二氧化钛, 纳米管, 铂, 光催化, 甲醇, 氧化

Abstract: 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.

Key words: silica, titania, nanotube, platinum, photocatalysis, methanol, oxidation