Abstract
Two types of polysulfone (PS) membranes (one on a nonwoven fabric and the other without the fabric) with nanosized carbon-covered alumina supported TiO2 (CCA/TiO2) uniformly dispersed in 15 wt % PS casting solution were prepared. TiO2 nanoparticles were added in order to enhance the visible light photodegradation potential of the PS membranes. The influence of CCA/TiO2 nanoparticles on the PS membranes was investigated using Raman, XRD, SEM, TGA, and TGA-FTIR characterization, and their mechanical strength was determined with an Instron tensile tester. The Raman and XRD results exposed the probability of interactions between the polymer and the CCA/TiO2 nanoparticles, the SEM suggested that these membranes had a high degree of porosity, and this might have resulted in an increase in the permeate flux. The membranes were subsequently tested for the capability to photodegrade Rhodamine B under visible light illumination. The PS/CCA/TiO2 (with fabric) membrane photodegraded 82.4% of the dye, while the PS/CCA...
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