Enhancing Polysulfone Mixed-Matrix Membranes with Amine-Functionalized Graphene Oxide for Air Dehumidification and Water Treatment

Porous low-pressure membranes have been used as active in water treatment and support for thin-film composite desalination gas separation applications. In this article, microfiltration polysulfone (PSf)mixed-matrix (MMM) containing amine-functionalized graphene oxide (GO-NH2) were fabricated via a phase inversion process characterized using XPS, SEM, AFM, DMA, XRD, contact angle measurements. The effect of GO-NH2 concentration on membrane morphology, hydrophilicity, mechanical properties, oil–water performance was analyzed. Significant enhancements porosity, permeability, selectivity achieved at very low concentrations (0.05–0.2 wt.%). particular, the permeability 0.2 wt.% 92% higher than pure PSf membrane, oil rejection reached 95.6% compared to 91.7% membrane. stiffness also increased by 98% Importantly, antifouling characteristics PSf-GO-NH2 MMMs significantly improved. When filtering 100 ppm bovine serum albumin (BSA) solution, demonstrated slower flux decline an impressive recovery after washing. Notably, control showed only 69%, while with exceptional 88%. Furthermore, exhibited enhanced humidity removal performance, permeance increase from 13,710 16,408. These results indicate that MMM is excellent candidate reliable applications, notable improvements performance.