MOFs改性纳滤膜去除饮用水中微量有机物进展

Research Progress of the Trace Organic Pollutants Removal from Drinking Water by Modified Nanofiltration Membranes with Metal Organic Frameworks

纳滤是一种可用于去除微量小分子有机污染物的技术,但目前纳滤膜难以同时实现高通量及高有机物去除率,限制了其大规模应用。在纳滤膜中添加金属有机框架复合物(MOFs),通过其大量的纳米孔道及其筛分、吸附和催化降解等作用可以使纳滤膜实现高通量和对有机物的高效去除。分析阐述了近年来国内外基于MOFs改性纳滤膜去除微量小分子有机污染物的研究进展,并分析了MOFs改性纳滤膜存在的问题,以期为改性纳滤膜去除饮用水中微量小分子有机物提供参考。

Nanofiltration(NF)is used for the removal of trace organic pollutants.However,the performance of NF is constrained by the trade-off between removal rate of organic matter and water flux,which limits its large-scale application.With the addition of metal organic frameworks(MOFs),the modified NF membrane is expected to achieve high flux and high removal rate of organic pollutants based on its abundant nanochannels,nanopore screening,adsorption and catalytic degradation.In this work,the research progress of MOFs-modified NF membranes for the removal of trace organic pollutants in recent years was reviewed.Moreover,the existing problems of MOFs-modified NF membrane were analyzed.This study would provide a reference for the usage of modified nanofiltration membranes on removal of trace organic matter in drinking water.