MOF scaffold for a high-performance mixed-matrix membrane

Ke Xie, Qiang Fu, Paul A. Webley, Greg G. Qiao

Research output: Contribution to journalArticleResearchpeer-review

23 Citations (Scopus)

Abstract

A novel composite membrane consisting of an interconnected MOF scaffold coated with cross-linked poly(ethylene glycol) (PEG) has been developed. As a result of its unique structure, the membrane shows an exceptional 18-fold permeability enhancement as compared to pristine PEG membranes, without compromising the selectivity. This performance is unattainable with current mixed-matrix membranes (MMMs). Our optimized membrane has a permeability of 2700 Barrer with a CO2/N2 selectivity of 35, which surpasses the latest Robeson upper bound.

Original languageEnglish
Pages (from-to)8597-8602
Number of pages6
JournalAngewandte Chemie - International Edition
Volume57
Issue number28
DOIs
Publication statusPublished - 9 Jul 2018
Externally publishedYes

Keywords

  • bicontinuous phases
  • membranes
  • MOF nonwoven cloths
  • one-dimensional metal–organic frameworks
  • polymers

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