Fabrication and characterization of polyamide thin film nanocomposite (TFN) nanofiltration membrane impregnated with TiO2 nanoparticles

► Polyamide TFN membranes were prepared on hollow-fiber α-alumina support. ► Functionalization of TiO2 nanoparticles assisted to overcome the agglomeration. ► Thin-film gives the best performance at 0.005 wt.% of functionalized TiO2. ► Uniform dispersion of functionalized TiO2 results better thermal stability. ► Improvement in the permeability as well as selectivity has obtained.