Polyaniline-grafted Cu-MOFs via coordination-driven strategy constructs facilitated transport hybrid membrane for CO2 separation

Bo yu Li, Jia xiang Liu, Xuan ting He, Shun Mao, Wen quan Tao, Zhuo Li*, Yue xian Hong

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


MOFs-based facilitated transport hybrid membranes (FTHMs) have shown their great potential in CO2-selective gas separation. However, rational membrane fabrication by distributing evenly and introducing functional groups in MOFs-based facilitated transport hybrid membrane is crucial but challenging. We herein report a facile coordination-driven approach to realize the integration of polyaniline (PANI) grafted Cu-MOFs onto a polymeric matrix through Cu(II)-N coordination interaction. The resulting facilitated membrane exhibited synergetic channels to process CO2-facilitated transport due to the CO2-philic nature of PANI and MOFs with low-density pore blockage observed. The even distribution of well-dispersed MOFs nanoparticles upon PANI is realized through coordination interaction between the metal center and amino and imine groups in PANI. Moreover, PANI is highly compatible with the polymeric matrix by forming hydrogen bonds, as verified by experimental characterization and molecular dynamics (MD) simulations. The resulting FTHMs exhibit a simultaneous enhancement of individual-gas permeance (676.6 GPU) and CO2/N2 ideal selectivity (28.3), as well as enhanced decomposition temperature up to 474 °C and lasting sustainability over 72 days (1728 h). The coordination-driven membrane fabrication paves a new and promising way for designing stable, uniform, and longevity FTHMs, thus offering a potential facile route to fabricate high-performance FTHMs for CO2/N2 separation.

Original languageEnglish
Article number124486
JournalSeparation and Purification Technology
Publication statusPublished - 15 Oct 2023
Externally publishedYes


  • CO/N separation
  • Coordination network
  • Facilitated transport hybrid membranes
  • Metal–organic frameworks
  • Molecular dynamics simulations


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