Mixed-Matrix Composite Membranes Based on UiO-66-Derived MOFs for CO2 Separation

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Abstract
We demonstrated a novel mixed matrix composite membrane (MMCM) based on acrylated polyurethane (APU) and UiO-66 nanoparticles to separate CO2/N2 mixture. UiO-66 and functionalized UiO-66 including NH2-UiO-66 and GMA-UiO-66 were loaded in APU/HEMA (APUH) matrix at variable concentrations between 3-30 wt%. APUH/ GMA-UiO-66s MMCM exhibited strong adhesion with support layer of polyester/polysulfone (PS/PSF) which was not deteriorated after immersion in water for a long time (20 days). Incorporation of UiO-66 and its functionalized forms increased simultaneously permeability and CO2/N2 selectivity which was indeed superior in comparison with MMCMs reported previously. GMA-UiO-66 filled MMCM displayed a CO2 permeance of 14.5 Barrer and CO2/N2 selectivity of 53 at critical concentration (25 wt%). This attractive separation performance of APUH/UiO-66 offered an exciting platform for development of composite membrane in sustainable CO2 separations.
Funding Information
  • Niroo Research Institute

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