Effect of Graphene Oxide (GO) on the Surface Morphology &amp; Hydrophilicity of Polyethersulfone (PES)

Junaidi, Nurul Fattin Diana; Khalil, Nosiah; Jahari, Ahmad Fadhil; Shaari, Norin Zamiah Kassim; Shahruddin, Munawar Zaman; Alias, Nur Hashimah; Othman, Nur Hidayati

doi:10.1088/1757-899x/358/1/012047

Cited by 24 publications

(17 citation statements)

References 10 publications

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“…Prior to the casting process, the resulting solution was subjected to sonication for removal of air bubbles entrapped inside the casting solution. A phase inversion technique where the solutions were poured onto a clean and dry glass plate then casted using a glass rod with a fixed gap of ~100 μm between the plate and rod was utilized. Immediately, the glass plate containing the membrane film was immersed into a non‐solvent coagulation bath (25 ± 2 °C) containing DI water allowing phase inversion to occur.…”

Section: Methodsmentioning

confidence: 99%

“…Polymeric‐based materials such as polyethersulfone (PES) membrane have been widely used for pressure‐driven liquid separations predominantly for wastewater treatment . PES is a high temperature amorphous thermoplastic, good solubility in low polarity solvents (ketones and chlorinated aromatic hydrocarbons), chemical resistance, and easy to fabricate using phase inversion methods .…”

Section: Introductionmentioning

confidence: 99%

“…9 Polymeric-based materials such as polyethersulfone (PES) membrane have been widely used for pressure-driven liquid separations predominantly for wastewater treatment. [10][11][12] PES is a high temperature amorphous thermoplastic, good solubility in low polarity solvents (ketones and chlorinated aromatic hydrocarbons), chemical resistance, and easy to fabricate using phase inversion methods. 13,14 Salahi et al 15 have fabricated PES UF HF membranes and found that the membranes have more than 96.3% oil rejection and are feasible for the treatment of oil refining wastewater.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication and characterization of graphene oxide–polyethersulfone (GO–PES) composite flat sheet and hollow fiber membranes for oil–water separation

Junaidi

Othman

Shahruddin

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND In this work, a series of graphene oxide–polyethersulfone (GO–PES) composite flat sheet (FS) and hollow fiber (HF) membranes were fabricated by blending 0.5 and 1.0 wt% of GO into the PES matrix and utilized for oil–water separation. GO was first prepared and characterized by using Fourier‐transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), X‐ray diffraction (XRD) and thermogravimetric analysis (TGA) before being used as membrane fillers. RESULTS Interestingly, although similar dope composition was used for the fabrication of HF and FS membranes, their morphology and pore size varied significantly owing to the way the membranes were fabricated. Significant enhancement of hydrophilicity was observed for both composite FS and HF membranes, where the water contact angle value decreased from 74.8° to 42.2° and 71.4° to 49.8°, respectively. The flux of the composite membranes increased up to 150% of the bare membranes especially when 1.0 wt% of GO was added. Although higher oil rejection (~99%) was observed for HF membranes that possess smaller pores, the permeation flux was maintained due to the improved flow dynamic. Lower oil rejection (up to 50%) was observed for FS membranes, which might be due to its big pore sizes particularly at the bottom surface. As more oil droplets formed on the membrane surface and prevented water molecules to pass through the membrane, fouling might occur rapidly. CONCLUSIONS The results obtained in this work suggest that surface hydrophilicity, pore size of membranes and oil–water separation performances was greatly affected by membrane shape. Owing to many advantages of HF membranes, this type of membrane has great potential for commercial applications. © 2020 Society of Chemical Industry

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fabrication and characterization of graphene oxide–polyethersulfone (GO–PES) composite flat sheet and hollow fiber membranes for oil–water separation

Junaidi

Othman

Shahruddin

et al. 2020

J of Chemical Tech & Biotech

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“…Besides, at low filler concentrations, solidification takes place slower, giving rise to larger pores. In addition, lower thermodynamic stability of casting solution in the presence of hydrophilic nanoplatelets, simplifies solvent molecules diffusion to the coagulation bath from the polymer matrix, resulting in larger pore size formation 25,97,100 . Furthermore, with loading more EOGO nanoplatelets in polymer (up to 0.5 wt%), the viscosity of the casting solution ascends gradually, decreasing the solvent and non‐solvent demixing rate which necessarily leads the pore size to decrease 15 .…”

Section: Resultsmentioning

confidence: 99%

Investigation of electric field‐aligned edge‐oxidized graphene oxide nanoplatelets in polyethersulfone matrix in terms of pure water permeation and dye rejection

Besharat

Manteghian

Russo

et al. 2020

Polymers for Advanced Techs

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Herein, we have evaluated the impact of orientated edge‐oxidized graphene oxide nanoplatelets (EOGO) in polyether sulfone (PES) membrane on the pure water permeability (PWP) and organic dye molecule rejection values. Aligned PES/EOGO nanocomposite films were prepared through electric field induction. Morphological, structural, and chemical‐physical characterizations including atomic force microscopy, thermogravimetric analysis (TGA), contact angle, zeta potential, porosity, and PWP measurements were carried out. The results revealed successful aligned/oriented PES/EOGO nanocomposite formation at low‐to‐moderate EOGO loadings. Membrane function tests demonstrated an increase in water permeability at higher EOGO contents, up to 0.5 wt%, followed by a decrease at 1 wt% nanoplatelets due to nanoparticles agglomeration. The horizontal electric field (1000 Hz) processed samples indicated lower PWP in comparison with their vertical‐field (34% decrement) and No‐field (29% increment) counterparts as well as a better dye molecule rejection at 0.1 wt%, referring to nanoplatelets successful alignment at this loading level.

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“…As an innovation, GO has attracted much attention in academic research owing to favorable properties such as its large surface area, and the fact that it is a non-conductive, highly hydrophilic carbon material [36,37]. GO emerged as a good support to achieve uniform distribution without aggregation, and is a promising candidate for oil-water separation [38,39]. GO with a two-dimensional structure has the ability to intercalate into a rTAC fiber membrane and flatten the surface to avoid the penetration of TiO 2 nanoparticles and prevent blockage of the fiber membrane.…”

Section: Introductionmentioning

confidence: 99%

Oil-Water Separation of Electrospun Cellulose Triacetate Nanofiber Membranes Modified by Electrophoretically Deposited TiO2/Graphene Oxide

Naseem

et al. 2018

Polymers

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Recycled waste industrial cellulose triacetate (TAC) film, which is one of the key materials in polarizers, was used to produce nanofiber membranes by electrospinning and synergistic assembly with graphene oxide (GO) and titanium dioxide (TiO 2 ) for oil-water separation. In this study, GO and TiO 2 coated by an electrophoretic deposition method introduced super hydrophilicity onto the recycled TAC (rTAC) membrane, with enhanced water permeability. The results indicate that when the outermost TiO 2 layer of an asymmetric composite fiber membrane is exposed to ultraviolet irradiation; the hydrophilicity of the hydrophilic layer is more effectively promoted. Moreover, this coating could efficiently repel oil, and demonstrated robust self-cleaning performance during the cycle test, with the aid of the photocatalytic properties of TiO 2 . The rTAC membrane of networked hydrophobic fibers could also increase the speed of the filtrate flow and the water flux of the oil-water emulsion. The permeate carbon concentration in the water was analyzed using a total organic carbon analyzer. Incorporation of TiO 2 /GO onto the rTAC membrane contributed greatly towards enhanced membrane hydrophilicity and antifouling performance. Therefore, the novel TiO 2 /GO/rTAC asymmetric composite fiber has promise for applications in oil-water separation.

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Effect of Graphene Oxide (GO) on the Surface Morphology & Hydrophilicity of Polyethersulfone (PES)

Cited by 24 publications

References 10 publications

Fabrication and characterization of graphene oxide–polyethersulfone (GO–PES) composite flat sheet and hollow fiber membranes for oil–water separation

Fabrication and characterization of graphene oxide–polyethersulfone (GO–PES) composite flat sheet and hollow fiber membranes for oil–water separation

Investigation of electric field‐aligned edge‐oxidized graphene oxide nanoplatelets in polyethersulfone matrix in terms of pure water permeation and dye rejection

Oil-Water Separation of Electrospun Cellulose Triacetate Nanofiber Membranes Modified by Electrophoretically Deposited TiO2/Graphene Oxide

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