可磁性回收的金属掺杂磁铁矿光Fenton降解有机污染物研究进展

Metal Doped Magnetite Based Magnetically Recoverable Catalysts for the Photo-fenton Degradation of Organic Pollutants

在能源、环境工程和材料科学领域,磁铁矿受到了广泛的关注。特别是在环境工程领域,磁性过渡态金属可以极大的提高异相芬顿催化活性的效率,并且可以在处理污水中的有机污染物时更好的循环使用。在该综述中,对目前使用的一些金属掺杂基于磁铁矿的系统异构芬顿或光芬顿反应过程进行了讨论。然后,论证了金属掺杂在增强污染物降解效率中起的作用。最后,总结了金属掺杂磁铁矿降解污染物可能的光芬顿反应机理。

Metal-substituted magnetite has attracted great interests in many fields such as energy, environmental en- gineering, material science. Especially in environmental engineering, the incorporation of transition metals into magne- tite can greatly increase the heterogeneous Fenton catalytic activity of magnetite with high efficiency and easy recycle for degradation of organic pollutants in water purification and wastewater treatment. In this review, using of some currently metal doped magnetite based systems in heterogeneous Fenton,or photo-Fenton processes are discussed. Then, the role of metal doped species for the enhanced efficiency of degradation process is presented. Finally, possible reaction mechanism for the photo-Fenton degradation pollutants in the present of metal doped magnetite is also given.