Highly CO-Selective Mixed-Matrix membranes incorporated with Ag Nanoparticle-Impregnated MIL-101 Metal–Organic frameworks

Miso Kang, Ki Chul Kim, Su Bin Min, Hyo Jun Min, So Youn Lee, Bo Ryoung Park, Jeong Hoon Kim, Jong Hak Kim

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


The significance of carbon monoxide (CO) as an invaluable starting material for chemical industries necessitates comprehensive analysis of membrane-based CO separation and recovery. In this regard, highly CO-selective mixed-matrix membranes (MMMs) based on dual carriers [Ag+ ions and Ag nanoparticle (NP)-impregnated MIL-101 (Ag@MIL-101)] were fabricated herein for CO separation. A highly adhesive comb copolymer [poly(glycidyl methacrylate-co-poly(oxyethylene methacrylate); PGMA-co-POEM; PGO] plays a pivotal role as a di-functional matrix in anchoring Ag+ ions and uniformly dispersing Ag@MIL-101 particles, resulting in excellent interfacial properties. An optimal CO-separation performance is achieved at an Ag@MIL-101 loading of 10 wt% (CO permeance of 30.7 GPU and CO/N2 selectivity of 11.8), which is superior compared to that of membranes with single Ag+ ions. This study elucidates the synergistic CO transport effect of the positively charged AgNP-impregnated MOFs and Ag+ ions through the fabricated membranes, and proposes a novel concept of “accelerated transport.” The separation mechanism behind the high CO capture property is delineated using molecular dynamic simulation through morphology and energetic analyses.

Original languageEnglish
Article number134803
JournalChemical Engineering Journal
Publication statusPublished - 2022 May 1

Bibliographical note

Publisher Copyright:
© 2022 Elsevier B.V.

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Environmental Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering


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