Decarbonization via bio-MOF-impregnated polysulfone-based hybrid membranes

Bio-metal-organic frameworks (Bio-MOFs) are promising materials for membrane development due to their unique structural properties and high CO 2 affinity. This study explores integration of Bio-MOF-11 into a polysulfone matrix, demonstrating its potential to enhance carbon capture performance. Current investigation encompasses production and analysis of mixed-matrix membranes utilizing Bio-MOF-11 nanoparticles and polysulfone (PSf) matrix as their fundamental constituents. In instances where large metal-organic framework loadings were employed, it was demonstrated that mixed matrix membranes had a notable inclination towards CO 2 as opposed to CH 4 and N 2 . This was substantiated by observing CO 2 permeability values reaching up to three times accompanied by almost doubling CO 2 /N 2 and CO 2 /CH 4 selectivities as compared to pristine PSf membrane. Experimentally obtained permeability results of different gases through prepared mixed-matrix membranes containing varied amounts of Bio-MOF-11 were compared by applying theoretical models basing on two- and three-phase morphological systems. Findings also demonstrated elevated levels of adsorption, solubility, and diffusion coefficients in comparison to original PSf membrane. Findings of this study indicate potential utility of Bio-MOF-11 in the field of carbon capture and natural gas sweetening processes. • Hybrid membranes were prepared by impregnating Bio-MOF-11 in polysulfone. • Hybrid membranes were thoroughly investigated by advanced techniques. • Composite membranes exhibited enhanced decarbonization characteristics.