Preparation and Characterization of a Hydrophilic Polysulfone Membrane Using Graphene Oxide

Figure 5

SEM images of the surface (a1, a2, a3, a4, a5; b2′, b3′, b4′, b5′) and the cross-sectional images (b1, b2, b3, b4, b5) of PSf, PSf/GO, and PSf/GO-TiO₂ membranes.