Preparation and Modification of MOF-Polymer Mixed Matrix Membrane and its Application in Pervaporation

Pervaporation is a membrane separation technology with the advantages of low energy consumption and easy operation. At present, the traditional polymer pervaporation membrane still lacks in separation performance and stability. Metal-organic framework ( MOF) is a crystalline porous material formed by self assembly of metal ions and organic ligands. It has unique properties such as selective adsorption of target molecules and molecular sieving effect. In recent years, many studies have shown that the introduction of MOF as a filler into the polymer matrix to construct mixed matrix membranes ( MMMs) has a good effect on its pervaporation performance. Starting from different series of MOF, this paper discusses the types of MOF suitable for pervaporation mixed matrix membrane, analyzes the preparation methods and modification strategies of MOFpolymer mixed matrix membrane, and reviews the application progress of this kind of mixed matrix membrane in pervaporation (dehydration of organic solvent, recovery of organic matter from dilute solution, separation of organic mixture). The challenges in the research of MOF-polymer mixed matrix membrane for pervaporation are summarized, and its future development is prospected.