A review on 2D porous organic polymers for membrane-based separations: Processing and engineering of transport channels

Advanced Membranes Pub Date : 2021-01-01 DOI:10.1016/j.advmem.2021.100014

Yanqiu Lu , Wei Liu , Jiangtao Liu , Xue Li , Sui Zhang

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引用次数: 18

Abstract

The expansion of separation demands at molecular and ionic levels has triggered extensive research to explore new materials as promising practical membranes for separations. Owing to their dimension-related properties of two-dimensional (2D) porous organic polymers (POPs), promising research on the construction of 2D POPs into membranes has emerged and progressed rapidly, offering membranes with highly tunable pores/channels, robust frameworks/networks, intrinsic flexibility, and light weight for multiple separation purposes. In this review, up-to-date strategies for processing of 2D POPs into diverse continuous membranes and engineering of their nanochannels are highlighted. The 2D POPs materials discussed include the examples of 2D covalent organic frameworks (COFs), 2D covalent triazine frameworks (CTFs) and 2D conjugated microporous polymers (CMPs). Case studies on these materials for potential membrane applications including gas separation, water treatment, organic solvent nanofiltration (OSN), pervaporation are summarized. Finally, the critical challenges and futuristic upgrades of research directions and opportunities of 2D POPs based advanced membranes are outlined.

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用于膜基分离的二维多孔有机聚合物的研究进展:输送通道的加工与工程

分子和离子水平分离需求的扩大引发了广泛的研究，以探索新材料作为有前途的实用分离膜。由于二维(2D)多孔有机聚合物(POPs)具有与尺寸相关的特性，将二维POPs构建成膜的研究前景广阔，并取得了迅速进展，为多种分离目的提供了具有高度可调孔/通道、坚固的框架/网络、固有灵活性和重量轻的膜。在这篇综述中，重点介绍了将二维持久性有机污染物加工成各种连续膜的最新策略及其纳米通道的工程设计。所讨论的二维持久性有机污染物材料包括二维共价有机框架(COFs)、二维共价三嗪框架(CTFs)和二维共轭微孔聚合物(cmp)。总结了这些材料在气体分离、水处理、有机溶剂纳滤(OSN)、渗透蒸发等潜在膜应用方面的案例研究。最后，概述了基于二维持久性有机污染物的先进膜的关键挑战和未来的研究方向和机遇。

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来源期刊

Advanced Membranes

CiteScore

8.50

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0.00%

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