Astuti, Budi (2022) Effect of triple-tail surfactant on the morphological properties of polyethersulfone-based membrane and its antifouling ability. Journal Material Science: Composites & nanocomposites, 57. pp. 1-19. ISSN 1573-4803

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Abstract

This study presents a simpler approach to directly synthesize graphene oxide (GO) via electrochemical exfoliation method utilizing customized triple-tail 1-butyl-3-methyl-imidazolium, 1, 4-bis(neopentyoxy)-3-(neopentyloxycar�bonyl)-1, 4-dioxobutane-2-sulfonate (BMIM-TC14) and sodium 1,4-bis(- neopentyloxy)-3-(neopentylcarbonyl)-1,4-dioxobutane-2-sulfonate (TC14) surfactants. The synthesized GO and titanium dioxide (TiO2) were then used as additives in the fabrication of polyethersulfone (PES)-based nanofiltration (NF) membrane via non-solvent-induced phase separation method. The dye rejection performance and antifouling ability of the fabricated PES/GOBMIM-TC14/TiO2 and PES/GOTC14/TiO2 NF membranes were then investigated by comparing it with pristine PES membrane. It is worth noting that the utilization of triple-tail surfactant obviously enhanced membrane’s morphology in which PES/ GOTC14/TiO2 NF membrane showed the highest hydrophilicity as shown by its lowest contact angle (68.98�). According to dead-end cell measurement, higher pure water flux (200.265 L/m2 �h) and dye rejection (86.58%) were also obtained by PES/GOTC14/TiO2 NF membrane compared to other fabricated membranes. Higher GO amount in the sample resulted from the utilization of triple-tail surfactants that was believed to improve the dye rejection performance and antifouling abilities. Both GO-based NF membranes also showed a high flux recovery ratio ([100%) compared to the pristine PES membrane (5.88%), thereby implied their excellent antifouling ability.

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