Covalent organic framework-based membranes for liquid separation. Issue 14 (5th May 2021)

• Record Type: Journal Article
• Authors: Zhang, Sule; Zhao, Shuang; Jing, Xuechun; Niu, Ziru; Feng, Xiao
• Is Part Of: Organic chemistry frontiers. Volume 8:Issue 14(2021)
• Page Start: 3943
• Page End: 3967
• Publication Date: 2021-05-05
• Subjects: Chemistry, Organic -- Periodicals; 547.005
• DOI: 10.1039/d0qo01354d
• Languages: English
• ISSNs: 2052-4110

Abstract

Abstract : This review summarizes the synthesis and characterization methods of COF-based membranes in recent years and discusses their separation mechanism and application in liquid separation. Abstract : Covalent organic frameworks (COFs) are a class of organic porous polymers with regular pore structures, which are connected by organic building units through covalent bonds. The unique features of COFs, such as regular pore, uniform pore size and tunable pore environment, provide great potential in the field of membrane separation. In this review, we focus on the COF-based membranes for liquid separation. We first summarize their synthesis and characterization methods, and briefly discuss the separation mechanism and the key factors for improving their separation performance. Then, we give an introduction to the liquid separation of COF membranes from three aspects: water treatment, the recovery and purification of organic solvents, and chiral separation. Finally, a perspective on the opportunities and challenges for next-generation COF-based membranes for liquid separation is given.