Polycrystalline advanced microporous framework membranes for efficient separation of small molecules and ions

Jue Hou, Huacheng Zhang, George P. Simon, Huanting Wang

Research output: Contribution to journalReview ArticleOtherpeer-review

16 Citations (Scopus)

Abstract

Advanced porous framework membranes with excellent selectivity and high permeability of small molecules and ions are highly desirable for many important industrial separation applications. There has been significant progress in the fabrication of polycrystalline microporous framework membranes (PMFMs) in recent years, such as metal–organic framework and covalent organic framework membranes. These membranes possess small pore sizes, which are comparable to the kinetic diameter of small molecules and ions on the angstrom scale, very low thickness, down to tens to hundreds of nanometers, highly oriented crystalline structures, hybrid membrane structures, and specific functional groups for enhancing membrane selectivity and permeability. Recent advances in the fabrication methods of advanced PMFMs are summarized. Following this, four emerging separation applications of these advanced microporous framework membranes, including gas separation, water desalination, ion separation, and chiral separation, are highlighted and discussed in detail. Finally, a summary and some perspectives of future developments and challenges in this exciting research field are presented.

Original languageEnglish
Article number1902009
Number of pages13
JournalAdvanced Materials
Volume32
Issue number18
DOIs
Publication statusPublished - 7 May 2020

Keywords

  • advanced porous frameworks
  • chiral resolution
  • desalination
  • gas separation
  • ion transport
  • membranes

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