TiO_2纳米薄膜光催化效率评价标准的研究  

The Study on Criterion of Photocatalytic Efficiency of Nano-Titania Films

作　　者：郑江[1] 贺蕴秋[1] 

机构地区：[1]同济大学材料科学与工程学院无机非金属材料研究所,上海200433

出　　处：《玻璃与搪瓷》2005年第6期10-14,共5页Glass & Enamel

基　　金：上海市科委纳米专项基金项目(0352nm070)

摘　　要：针对纳米氧化钛光催化性能研究中缺乏统一有效表征标准的现状,比较了二氯乙酸、罗丹明B和甲基橙三种光催化活性评价物的热稳定性和对紫外光的稳定性,并以氧化钛纳米薄膜为光催化剂,研究了三种评价物的光催化降解效率表征,以及酸碱度、通氧条件等因素对评价物在光催化活性表征中的影响及其机理,归纳了三种评价物对于纳米氧化钛光催化活性表征的优缺点。Due to lack of common criterion for the photocatalytic activity estimation, it is hard to evaluate the photocatalytic efficiency of the nano -structured titania in different instance. In this paper, we compared the photodegradation efficiency of nano - titania films by using dichloroacetic acid, rhodamine B and methyl orange as the photocatalytic referents and the ultraviolet lamp as the source light to generate the photocatalytic reaction. The thermal stability and photosensitivity of these referents were determined in order to reach the specific photocatalytic activity of the nano - structured titania in each case. At the same time,we discussed the characters of these referents under the different pH and both with and without oxygen pumping, with the aim of finding the proper one for the photocatalytic efficiency evaluation.

关 键 词：光催化 TiO2纳米薄膜 二氯乙酸 甲基橙 罗丹明B 

分 类 号：TQ171.724[化学工程—玻璃工业]