硅烷偶联剂改性的二氧化钛光催化降解气相苯(英文)

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

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.

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 photoeatalyst prepared was characterized by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy （XPS）. The XPS spectrum shows that the binding energy of Ti 2 p for the modified TiO2 shifted to a low value. The modified TiO2 has a photocatalytic activity 2.5 times that of pure TiO2.