Research Progress in the Mechanism of Nano-photocatalytic Degradation of Organics in Water

Zhu Xinle, Xie Yibing, Li Ping, Shen Xunwei, Yuan Chunwei^*
(The Key Laboratory of Molecular and Biomolecular Electronics of Ministry of Education, Department of Biomedical Engineering, Southeast University, Nanjing 210096)

Abstract Recent research progress in the heterogeneous nano-titanium dioxide photo-catalytic degradation of organics in water was reviewed. Particularly, the degradation mechanism of major contaminants and the transformation of basic functional groups together with the easily oxidized breakpoint of complex compounds were introduced. Moreover problems to be resolved in the field of photo-catalytic mechanism were proposed.
Key words Titanium dioxide, Heterogeneous phase, Photo-catalysis, Degradation mechanism, Functional group

纳米TiO₂光催化降解水中有机物机理研究进展

朱馨乐 谢一兵 李 萍 沈迅伟 袁春伟^*
(东南大学生物科学与医学工程系分子与生物分子电子学教育部重点实验室 南京 210096)

摘要 综述了以TiO₂为例的纳米非均相光催化降解水中有机物反应机理的研究进展情况，以及可降解的有机污染物的种类。重点介绍了有机污染物催化降解机理、光催化氧化过程中基本官能团的转化规律和复杂化合物的易氧化断裂位点。最后提出了光催化降解领域内机理研究方面尚待解决的问题。
关键词 TiO₂ 非均相 光催化 降解机理 官能团

朱馨乐 女，30岁，博士生，现从事纳米光催化降解有机物机理的研究工作。 ^*联系人 E-mail:cwy@seu.edu.cn
江苏省高校高新技术产业化资助项目(JH01-010)
2002-06-10收稿，2002-10-15修回