The advancements in mixed matrix membranes containing functionalized MOFs and 2D materials for CO2/N2separation and CO2/CH4separation

•Mixed Matrix Membranes (MMMs) show high CO2separation efficiency.•The functionalization of MOFs significantly enhances CO2separation.•2D materials effectively modify the CO2transport pathways.•MOF@2D composite fillers are promising in the fabrication of efficient MMMs.