磁性金属-有机骨架材料在污水处理中的应用

Research Progress on preparation of Magnetic MOFs in Sewage Treatment

摘要:

金属-有机骨架（MOFs）材料具有比表面积大、孔隙率超高、孔径可调，以及合成后可改性和热稳定性高等诸多优点，已被广泛应用于污水处理领域。然而，如何对水体中的MOFs材料进行分离和回收再利用，一直是其应用瓶颈，阻碍了该材料的推广和应用。近年来,兴起了一种新型磁性吸附剂材料，磁性金属有机骨架(MMOFs)材料。MMOFs材料保留了MOFs材料的结构和性能特征，通过增添磁性复合材料，从而使吸附剂从水体中分离出来。对MMOFs材料作为吸附剂的研究现状进行了介绍，重点综述了该材料的制备方法及其对水体中重金属和有机污染物的检测和治理方面的研究工作，最后总结了MMOFs材料在实际应用中存在的问题和挑战，并对当前的研究热点和未来的研究工作进行了展望。

Abstract:

Metal-organic framework （MOFs） materials are widely used in the field of sewage treatment， with the advantages of large specific surface area， ultra-high porosity， adjustable pore size， modification after synthesis and high thermal stability. However， how to separate and recycle MOFs materials in wastewater has always been the bottleneck of its practical application. Magnetic metal-organic framework （MMOFs） is a new type of magnetic adsorbent material， which is composed of MOFs material and magnetic material. It not only retains the structure and performance characteristics of MOFs material， but also adds magnetic properties to the composites， which can be easily separate the adsorbent from the water body. This article introduced the development status of MMOFs materials as adsorbents， and focuses on the preparation methods of MMOFs materials and their detection and treatment of heavy metals and organic pollutants in water. Finally， the existing problems and challenges of MMOFs materials are summarized， and the future research hotpots are reasonably prospected.