金属-有机骨架材料用于废水处理

废水中的各种有害物质常常具有生物毒性或致癌性,因此如何高效、节能地处理水体污染是一个亟待解决的重要问题。金属-有机骨架材料(metal-organic frameworks,MOFs)是一种新型纳米多孔材料,具有种类多样性、结构可设计性与可调控性、高比表面积及良好的热稳定性等优点,已成为当前化学、材料学科的一个研究热点,在多个领域显示出潜在的应用前景,尤其是在分离方面。与气相分离相比,MOFs用于液相分离的研究较少。本文综述了近年来MOFs用于含有染料、药物、醇、芳香族化合物、重金属离子及其他离子的废水处理的研究进展,重点剖析了MOFs的孔结构、骨架电荷及功能性对分离效果的影响,并结合本课题组的研究工作,对这种新型多功能材料在水处理方面的前景和今后的研究重点作了展望。

Treatment of Waste Water Using Metal-Organic Frameworks

Harmful compounds and heavy metal ions in waste water are often biologically toxic and/or carcinogenic.Thus,removal of these substances from waste water in an efficient way has drawn considerable social and scientific concern in recent years.Metal-organic frameworks(MOFs),commonly recognized as "soft" analogues of zeolites,is a new class of nanoporous materials with various topologies,adjustable pore size,controllable properties,large surface area,as well as acceptable thermal stability.MOFs have received much attention in the fields of chemistry and materials science and have shown potential applications with well performance compared to the traditional porous materials including zeolites and activated carbons,especially in separation.Though gas phase separation using MOFs has been extensively studied and reviewed,studies on liquid phase separation are scarce.This review introduces the research progress on waste water treatment using MOFs,in which different harmful substances such as organic dyes,pharmaceuticals,alcohols,aromatic compounds,heavy metal ions and inorganic ions are included.Detailed analysis of the effect of the pore structure,framework charge and functional group on separation is provided.In addition,future studies that should be focused in this field are proposed based on the existed works combined with the research results in our group.