Photocatalytic degradation of reactive green KE-4BD in aqueous solutions over N-doped titania

摘要：

The photodegradation of reactive green KE4BD solution is investigated using N-doped titania (N-TiO2) under visible light irradiation. N-TiO2 is prepared using ammonia or urea as a nitrogen source and characterized by X-ray diffraction, BrunauerEmmett-Teller methods, and UV-visible diffuse reflectance spectra. The effects of the initial dye concentration and pH on photocatalytic degradation are studied, and the direct correlation between pH, dye concentration, and the rate of degradation are determined. Experimental results show that aqueous solutions of KE-4BD degrade easily in weakly acidic conditions in the presence of N-doped TiO2 (1 g/L) as a photocatalyst. The optimized dye concentration for photolysis is 150 mg/L. The complete degradation of KE-4BD could be achieved under visible light irradiation, and the dye molecules could be partly decomposed into inorganic substances.

作者: GangXin Ju Shen Yali Meng

作者单位: Dalian University of Technology, School of Chemical Engineering, Dalian, China

会议类型: 国际会议

会议名称: 2011 International Conference on Environmental Biotechnology and Materials Engineering(2011年环境生物技术与材料工程国际会议)

会议地点: 哈尔滨

会议语种:英文

页码: 1767-1771

在线出版日期: 2011-03-26（万方平台首次上网日期，不代表论文的发表时间）