环境工程学报2012，Vol.6Issue(8)：2629-2634,6.
Ba/TiO_2/MCM-41光催化降解对硝基苯甲酸
Photocatalytic degradation of p-nitrobenzoic acid with Ba/TiO2/MCM-41
摘要
Abstract
A composite photoeatalyst, Ba/TiO2/MCM-41, was prepared by sol-gel method using titanate butyl acetate as titanium source and MCM-41 molecular sieve as carrier. The results showed that Ba/TiO2/MCM- 41 was a mesoporous material with the surface area of 341.15 m2/g and its main crystalline phase was still ana- tase phase, and the ultraviolet absorption of Ba/TiOJMCM-41 was stronger than [25. The photodegradation rate reached 96.0% under 30 min UV-irradiation with the dosage of 0.5 g/L of Ba/TiOJMCM-41, the initial con- centration of 2 x 10 -4mol/L and the pH of 4 of p-nitrobenzoic acid. The productions of intermediates during pho- todegradation were monitored using ultraviolet spectrum, infrared spectrum and HPLC analysis. It was found that with the increase of irradiation time, the absorption peaks of p-nitrobenzoic acid decreased,the absorption peaks of nitryl and carboxyl in benzene rings decreased and the intermediates emerged, with the reaction, small mole-cules were also degradated gradually.关键词
Ba/TiO2/MCM-41/对硝基苯甲酸/光催化/降解率Key words
Ba/TiO2MCM41/p-nitrobenzoic acid/photocatalysis/degradation rate分类
资源环境引用本文复制引用
石飞,刘红,李杨薇,黄青,宋卫坤..Ba/TiO_2/MCM-41光催化降解对硝基苯甲酸[J].环境工程学报,2012,6(8):2629-2634,6.基金项目
湖北省武汉市科技计划项目 （）
