Photodegration of Hexachlorobenzene Catalyzed by TiO2

摘要：

Hexachlorobenzene(HCB), one of the persistent organic pollutants (POPs), is a refractory semivolation organic compound and non-biodegradable. Treatment of HCB contaminated wastewater by traditional method is essentially impossible. In the study, the photocatalytic oxidation of HCB preadsorbed on TiO2 was examined in aqueous suspension under UV light irradiation. Some factors affecting the photodegradation rate of HCB were also studied. The results indicated the hexachlorobenzene of preadsorbed on TiO2 underwent a fast photocatalysis. In the process, the pH value of the dispersion had little effect on the photooxidation rate of HCB catalyzed by TiO2, while the surface coverage, amount of HCB/TiO2, addition of Fe3+ and H2O2 affected it greatly.

关键词： hexachlorobenzene titanium dioxide photodegradation preadsorb photocatalysis

作者: 李凡修 陆晓华 李晓斌 梅平

作者单位: 华中科技大学环境科学研究所,武汉430074;长江大学化学与环境工程学院,荆州434023 华中科技大学环境科学研究所,武汉430074 长江大学化学与环境工程学院,荆州 434023

会议类型: 国际会议

会议名称: 第六届中国国际纳米科技研讨会

会议地点: 成都

会议语种:英文

在线出版日期: 2007-11-19（万方平台首次上网日期，不代表论文的发表时间）