催化学报

催化学报 ›› 2006, Vol. 27 ›› Issue (12): 1045-1047.

• 研究快讯 •    下一篇

硅烷偶联剂改性的二氧化钛光催化降解气相苯

钟俊波,皮展,林涛,龚茂初,王健礼,刘志敏,陈耀强   

  1. 四川大学化学学院, 四川成都 610064
  • 收稿日期:2006-12-25 出版日期:2006-12-25 发布日期:2006-12-25

Gas-Phase Photocatalytic Oxidation of Benzene over Titanium Dioxide Modified by Silane Coupling Agent

ZHONG Junbo, PI Zhan, LIN Tao, GONG Maochu, WANG Jianli, LIU Zhimin, CHEN Yaoqiang*   

  1. College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China
  • Received:2006-12-25 Online:2006-12-25 Published:2006-12-25

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摘要： 用硅烷偶联剂KH-570对二氧化钛光催化剂进行了改性,制备了一种新型光催化剂. 以苯作为模拟气体,在静态反应装置中考察了该催化剂的光催化性能. 结果表明,KH-570能显著提高二氧化钛对气相苯的光催化降解性能,其转化率是纯二氧化钛的2.5倍. 采用红外光谱和X射线光电子能谱对催化剂进行了表征.

关键词: 二氧化钛, 硅烷偶联剂, 改性, 苯, 气相光催化氧化

Abstract: The photocatalytic activity of TiO2 for the decomposition of gaseous benzene in a batch reactor can be greatly improved by modifying TiO2 with 3-(trimethoxysilyl)propylmethacrylate.The photocatalyst prepared was characterized by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy (XPS). The XPS spectrum shows that the binding energy of Ti 2p for the modified TiO2 shifted to a low value. The modified TiO2 has a photocatalytic activity 2.5 times that of pure TiO2.

Key words: titanium dioxide, silane coupling agent, modification, benzene, gas-phase photocatalytic oxidation