Janus graphene oxide nanosheet: A promising additive for enhancement of polymeric membranes performance prepared via phase inversion

Journal of Colloid and Interface Science
Mahdi AkbariAhmad F Ismail

Abstract

Although polymeric membranes find important role in water and waste water treatment in recent years, their fouling is still an important problem. Application of hydrophilic nanoparticles (NPs) is one of the proposed methods for reducing fouling of membranes but their dispersion and stability in hydrophobic polymer matrix is challenging. In this study Janus functionalization of the NPs was introduced as a promising technique toward achieving this goal. Polysulfone (PSf) membranes containing various concentrations of graphene oxide (GO) nanosheets and Janus graphene oxide (Janus GO) nanosheets (as additives) were fabricated via phase inversion. The synthesized nanosheets were characterized by field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy and dynamic light scattering (DLS). The prepared membranes also were then characterized by scanning electron microscopy (SEM), contact angle (CA), water uptake, porosity, mean pore size and casting solution viscosity. The membrane performance was also tested by determining pure water flux (PWF), bovine serum albumin (BSA) separation, flux reduction by fouling and flux recovery. CA re...Continue Reading

Citations

Dec 2, 2020·Membranes·Rana J KadhimAlberto Figoli
Apr 14, 2020·Materials Science & Engineering. C, Materials for Biological Applications·Zhiwen JianHesheng Xia
Jun 15, 2021·International Journal of Biological Macromolecules·Linlin CaoDonglei Wei

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