Plasma-induced poly(acrylic acid) catalyst nanoparticles coated polyvinylidene fluoride hollow fiber membrane

Hydrophilic of polyvinylidene fluoride (PVDF) hollow fiber membrane was enhanced through pulse inductively couple plasma (PICP) induced poly(acrylic acid) (PAA) polymerization followed by titanium dioxide nanoparticle (TiO₂-NPs) and zinc oxide nanoparticles (ZnO-NPs) coated. The morphology, chemical composition and hydrophilicity of modified membranes were characterizaed by SEM, EDS, and water contact angle. The analysis of SEM and EDS were found. The TiO₂-NPs and the mix solution of TiO₂-NPs and ZnO-NPs were successfully coated on membrane surface, but ZnO-NPs were rarely coated. As a result, the water contact angle of the membrane was coated with TiO₂-NPs was less than that of the membrane was coated with ZnO-NPs. The mixed solutions of TiO₂-NPs and ZnO-NPs, which were reduced from the original membrane was 77.9° to 74.1°. Also, when testing the water permeability, the membrane was coated with TiO₂-NPs and ZnO-NPs. The highest water permeability was 23.18 L/m²·min. The treated wastewater with Reactive Red 239 at a concentration of 100 mg/L and compared with the three pH values; 2, 4 and 6. The results found that the membrane was coated with TiO₂-NPs, ZnO-NPs, and the mix solution of TiO₂- NPs and ZnO-NPs did not found significantly changed.