Recent progress of covalent organic frameworks membranes: Design, synthesis, and application in water treatment

• Published in: Eco-Environment & Health Vol. 2; no. 3; pp. 117 - 130
• Main Authors: Liu, Xiaolu, Li, Yang, Chen, Zhongshan, Yang, Hui, Wang, Suhua, Tang, Zhenwu, Wang, Xiangke
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.09.2023; Elsevier
• Subjects: Characterization techniques; Covalent organic frameworks; Covalent organic frameworks membranes; Preparation strategies; Water treatment; Covalent organic frameworks; Covalent organic frameworks membranes; Water treatment; Preparation strategies; Characterization techniques
• ISSN: 2772-9850; 2772-9850
• DOI: 10.1016/j.eehl.2023.07.001

To date, significant efforts have been devoted to eliminating hazardous components to purify wastewater through the development of various nanomaterials. Covalent organic frameworks (COFs), an important branch of the porous crystalline family, possess the peculiarity of ultrahigh surface area, adjustable pore size, and facile functionality. Exciting studies from design fabrication to potential applications in water treatment by COF-based membranes (COMs) have emerged. This review summarizes various preparation strategies and synthesis mechanisms for COMs, including layer-by-layer stacking, in situ growth, interfacial polymerization, and electrochemical synthesis, and briefly describes the advanced characterization techniques for COMs. Moreover, the application of COMs in heavy metal removal, dye separation, purification of radionuclides, pollutant detection, sea water desalination, and so on, is described and discussed. Finally, the perspectives on future opportunities for designing COMs in water purification have been proposed. [Display omitted] •Analyzing the advantages of covalent organic frameworks for the preparation of COF-based membranes (COMs).•Advanced characterization techniques for COMs are described.•Various strategies for preparation of COMs are comprehensively summarized.•Summarizing the application of COMs in water treatment and analyzing the potential mechanism.