Mixing Effect of Ligand on Carbon Dioxide Capture Behavior of Zeolitic Imidazolate Framework/Poly(amide- b-ethylene oxide) Mixed Matrix Membranes

Chien Chieh Hu*, Chia Her Lin, Yu Hsuan Chiao, Yu Ching Huang, Hui An Tsai, Wei Song Hung, Kueir Rarn Lee, Juin Yih Lai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Mixed matrix membranes (MMMs) were synthesized from poly(amide-b-ethylene oxide) (Pebax) and mixed-ligand zeolitic imidazolate framework (ZIF-8-90(x)). The separation performance and microstructure of the membranes with different organic linker fractions and ZIF-8-90(x) loadings were characterized. Energy-dispersive X-ray microanalysis and field-emission scanning electron microscopy showed excellent adhesion between Pebax and ZIF-8-90(x), and no voids or clusters were observed. Single gas permeation measurements on MMMs revealed that the CO2/N2 selectivity of the membranes with ZIF-8-90(x) was better than that of the membrane with ZIF-8. Permeation analysis showed that the membranes with mixed ZIF-8 and ZIF-90 offers a tight microstructure. Overall, this study demonstrated that the gas separation behavior of the Pebax membrane was significantly changed by ZIF-8-90(x) loading. The ZIF-8-90(x)/Pebax membranes can be a good candidate for CO2 capture applications.

Original languageEnglish
Pages (from-to)15341-15348
Number of pages8
JournalACS Sustainable Chemistry and Engineering
Volume6
Issue number11
DOIs
Publication statusPublished - 2018 Nov 5
Externally publishedYes

Keywords

  • CO capture
  • Mixed matrix membrane
  • Mixed-ligand ZIF
  • Poly(amide- b-ethylene oxide)

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment

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