Combining S-DADPS monomer and halloysite nanotube for fabrication superior nanofiltration membrane

Abstract

In this paper, halloysite nanotubes (HNTs) and disodium-3-3′-disulfone-4-4′-dichlorodiphenylsulfone (S-DADPS) incorporated membranes designed to create a superior nanofiltration membrane. Interfacial polymerization technique was used for the fabrication process and key characterization tests such as contact angle, zeta potential, Scanning Electron Microscope (SEM), and Fourier Transform Infrared Spectroscopy Spectrum (FT-IR) were conducted prior to salt and dye performances tests. Two different dyes, setazol red and reactive orange of 100 ppm, and two different salt solutions, MgSO 4 and NaCl of 1000 ppm were used to determine the performances. Consequently, MS-0.01 membrane was selected as best performed membrane, the addition of hydrophilic 0.01% of HNTs and 80% of S-DADPS monomer formed the best recipe to produce a thin film nanocomposite NF membrane. Lastly, pH and temperature resistance tests were performed to further investigate the performance losses of the selected membrane. • Halloysit nanotubes (HNTs) and sulphonated diamine monomer were combined to fabricate superior polyamide membranes. • High MgSO 4 and dye rejection performances were obtained by combining HNTs and S-DADPS. • Temperature and pH resistance experiments were further investigated. • The best rejection performance was obtained by TFN NF membrane (MS-0.01) coated using 0.01% (w/v) HNTs and 80% S-DADPS.