摘要

This study describes the preparation Novel polyethersulfone (PES)/poly(vinylbutyral) (PVB)/titanium dioxide (TiO2) nanoparticles integral nanofiltration membranes were prepared by dip-coating of PES membrane in PVB and TiO2 nanoparticles aqueous solution. Glutaraldehyde (GA) was used as a cross-linker for the integral polymer membrane in order to enhance the chemical, thermal as well as mechanical stabilities. TiO2 nanoparticles with different concentrations (0, 0.1, 0.5, 0.8 wt.%) were coated on the surface of PES/PVB integral membrane. The morphological study was investigated by atomic force microscopy (AFM), scanning surface microscopy (SEM). In addition, the membranes performances, in terms of contact angle, permeate flux, COD rejection and swelling factor were also studied. It was found that the increase in TiO2 solution concentration can highly affect the surface morphology and filtration performance of coated membranes. The contact angle measurement and studies indicated that the TiO2 nanoparticles successfully were coated on the surface of PES/PVB integral membranes. However, rougher surface was obtained for membranes by TiO2 coating. The filtration performance data showed that the 0.5 wt.% TiO2-modified membrane presents higher performance in terms of flux and COD rejection as a pollution index. Finally, TiO2 modified membranes demonstrated the lower degree of swelling.

  • 出版日期2016