Photo Degradation of DNBA with Nano-sized TiO2

摘要：

Titanium tetrabutoxide was hydrolyzed at room temperature to form amorphous titanium hydroxide, which was aged for 16 h under acidic conditions in the presence of disperant hydroxypropyl cellulose. Then toluene was added to the mixture, and all of the water and part of toluene were distilled out through an oil-water separator. The nano-sized TiO2 powder was obtained by drying at 60 in the vacuum and then calcinated at 400 ℃ ℃, 500 ℃, 700 ℃, and 800 ℃ for 3 h. The rutile titanium with particle size of 20-50 nm was formed by calcinating at 800 for 3 ℃ h. At room temperature, 3,5-dinitrobenzoic acid (DNBA) was degraded under ultraviolet light in the presence of the rutile titanium obtained above, with the concentration drop of DNBA from 2×10-4 to 9.5×10-6 mol.L-1 after 2 h. This shows that the nano-sized rutile titania powder possesses high catalyst activity to degrade DNBA. The photodegradation efficiency increases markedly with adding hydrogen peroxide.

作者: LU Lianying WANG Huiying CHEN Dinglong MU Wei

作者单位: Chemistry Department, Shijiazhuang University, Shijiazhuang, 050035 China

会议类型: 国际会议

会议名称: 2011 International Symposium on Environmental Science and Technology(2011 环境科学与技术国际会议 2011 ISEST)

会议地点: 广东东莞

会议语种:英文

页码: 660-663

在线出版日期: 2011-06-01（万方平台首次上网日期，不代表论文的发表时间）