Interdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, 31261, Saudi Arabia.
Chemistry Department, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia.
Chem Rec. 2022 Aug;22(8):e202200062. doi: 10.1002/tcr.202200062. Epub 2022 May 31.
Covalent organic frameworks (COFs) are a promising class of porous crystalline materials made up of covalently connected and periodically protracted network topologies through organic linkers. The tailorability of organic linker and intrinsic structures endow COFs with a tunable porosity and structure, low density, facilely-tailored functionality, and large surface area, attracting increasing amount of interests in variety of research areas of membrane separations. COF-based membranes have spawned a slew of new research projects, ranging from fabrication methodologies to separation applications. Herein, we tried to emphasis the major developments in the synthetic approaches of COFs based membranes for a variety of separation applications such as, separation of gaseous mixtures, water treatment as well as separation of isomeric and chiral organic compounds. The proposed methods for fabricating COF-based continuous membranes and columns for real world applications are also thoroughly explored. Finally, a viewpoint on the future directions and remaining challenges for COF research in the area of separation is provided.
共价有机框架（COFs）是一类很有前途的多孔结晶材料，由通过有机连接子共价连接和周期性延伸的网络拓扑结构组成。有机连接子和固有结构的可调节性赋予 COFs 可调的孔隙率和结构、低密度、易于定制的功能和大的表面积，在膜分离的各种研究领域引起了越来越多的关注。基于 COF 的膜产生了大量新的研究项目，从制造方法到分离应用。在此，我们试图强调基于 COF 的膜在各种分离应用中的合成方法的主要发展，例如，气体混合物的分离、水处理以及异构体和手性有机化合物的分离。还彻底探讨了用于实际应用的基于 COF 的连续膜和柱的制造方法。最后，对 COF 在分离领域的研究的未来方向和遗留挑战提出了观点。
