(401as) Metal-Organic Framework/Graphene Oxide Composite Fillers in Mixed-Matrix Membranes for CO2 Separation

Efficient carbon capture and separation approaches are needed to reduce CO₂ emissions. The presentation will focus on the development of polysulfone (PSF) based mixed-matrix-membranes (MMMs) consisting of modified metal organic framework (MOF)-based fillers. ZIF-8 synthesized by hydrothermal growth, amine-functionalized ZIF-8, and ZIF-8/graphene oxide (GO) composites were incorporated as fillers in the PSF matrix via solution casting. The resulting membranes were characterized for their morphology, structure, sorption, and gas transport properties. CO₂ experiments showed enhanced permeability values for the PSF/ZIF-8 membrane in comparison to pure PSF, while the PSF+(ZIF-8/GO) membrane showed increased selectivity as well (up to 61% increase for CO₂/CH₄). Based on these results, composite fillers combining the functionality of MOFs with graphene oxide and highly versatile matrices have the potential to boost membrane performance for large scale CO₂ separation from hydrocarbon, flue gas, and related mixtures.