MOFs-coupled fiber membranes: A versatile platform for water purification

Abstract

Due to the high chemical and structural diversity, metal-organic frameworks (MOFs) have attracted great interest in water purification. However, the poor processability of MOF powders has hindered their practical applications. To achieve the efficient utilization of MOFs during water treatment, it is effective to combine MOFs with flexible fiber substrates into composite membranes. In this review, the research progress of rational development strategies of MOFs-coupled-fiber membranes was summarized, divided by the formation of MOFs. Furthermore, the pros and cons of different techniques for the synthesis of MOFs-coupled-fiber membranes were elaborated. Based on the understanding of the synthesis strategies, the applications of MOFs-coupled-fiber membranes for the removal of waterborne contaminants were listed, including heavy metal ions, organic dyes, and emerging pollutants. The purification performance largely depends on the structure of MOFs-coupled-fiber membranes and, ultimately on the synthesis strategies. To uncover the full potential of MOFs-coupled-fiber membranes in practical applications, current challenges and perspectives were also proposed. This review aims to help researchers gain a deep understanding of the important effect of MOFs-coupled-fiber membranes in wastewater treatment and provide theoretical guidance for the design and development of functional membranes.