Application of sulfonic acid group functionalized graphene oxide to improve hydrophilicity, permeability, and antifouling of PVDF nanocomposite ultrafiltration membranes

Ayyaru, Sivasankaran; Ahn, Young‐Ho

doi:10.1016/j.memsci.2016.10.048

Cited by 404 publications

(168 citation statements)

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“…The peaks observed at 1620 and 1050 cm −1 correspond to the CC stretching and CO stretching, respectively. The presence of these characteristic peaks demonstrated the sufficient oxidization of GO . Compared with GO, the peak observed at 1350 is the result of SO stretching vibration of SO 3 H groups on SGO .…”

Section: Resultsmentioning

confidence: 95%

“…Compared with the PPSSA membrane, the R a of the SGO‐containing composite membranes showed a slight increase and then decrease, while the contact angle values of these membranes gradually decreased, which indicated that incorporation of the hydrophilic SGO filler effectively improved the hydrophilicity of the composite membranes. In addition, due to the better hydrophilicity of SO 3 − groups than that of hydroxyl and carboxyl groups and higher R a , the SGO/PPSSA‐1.0 membrane had a lower contact angle value than GO/PPSSA‐1.0 membrane, indicating that the synergy played a favourable role in improving the hydrophilicity of the SGO/PPSSA‐1.0 membrane …”

Section: Resultsmentioning

confidence: 99%

“…The contact angle of a membrane is an important index in the evaluation of the anti‐fouling ability of membranes, which is closely related to their hydrophilicity and roughness. An increase in hydrophilicity will help promote the anti‐fouling performance . The contact angle and R a results of the synthesized composite membranes and Nafion 117 are presented in Table .…”

Section: Resultsmentioning

confidence: 99%

“…In addition, because of the substitution of its oxygen‐containing functional groups (e.g. carboxyl, carbonyl, epoxy, and hydroxyl groups) by –SO 3 H groups, the hydrophilicity of GO can be significantly improved, which plays an important role in the improvement of anti‐fouling properties of composite membranes . Herein, the incorporation of SGO improved the proton conductivity of the composite membranes, while also improving their anti‐fouling properties.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of a SGO/PVDF‐g‐PSSA composite proton‐exchange membrane and its enhanced performance in microbial fuel cells

Wang

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND Proton‐exchange membrane (PEM) has a significant effect on the performance and overall cost of microbial fuel cells (MFCs). In this study, a novel composite PEM is fabricated by compositing sulfonated graphene oxide (SGO) with the Poly(vinylidene fluoride)‐g‐Poly(styrene sulfonic acid) (PVDF‐g‐PSSA) copolymer. The performance of MFCs with these newly prepared composite PEMs as separators was evaluated. A Quartz crystal microbalance with dissipation (QCM‐D) combined with membrane‐coated sensor crystals was used to investigate the biofouling mechanism of PEMs in MFCs at a micro‐perspective. RESULTS The successful sulfonation of GO was confirmed by Fourier transform infrared spectrometry and X‐ray photoelectron spectroscopy. When the SGO loading was 1.0 wt%, the SGO/PVDF‐g‐PSSA membrane had higher water uptake (32.56%), proton conductivity (0.083 S cm−1) and excellent hydrophilicity (contact angle 70.78°) than that of Nafion 117. QCM‐D results further confirmed its better anti‐fouling property vs that of the PVDF‐g‐PSSA, GO/PVDF‐g‐PSSA, and Nafion 117 membranes. Moreover, the MFC working with the SGO/PVDF‐g‐PSSA membrane exhibited the highest maximum power density and best stability of power production after 3 months of operation. CONCLUSION The SGO/PVDF‐g‐PSSA‐1.0 composite PEM can be used as an alternative material to Nafion in MFCs and is conducive to the long‐term stable operation of MFCs. © 2018 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fabrication of a SGO/PVDF‐g‐PSSA composite proton‐exchange membrane and its enhanced performance in microbial fuel cells

Wang

et al. 2018

J of Chemical Tech & Biotech

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“…However, at high SCER content >4%, the contact angle and water content tends to increase and decrease, respectively. Certainly, the improvement of membrane surface hydrophilicity will help to improve the membrane performance and antifouling properties …”

Section: Resultsmentioning

confidence: 99%

Fouling evaluation of polyethersulfone (PES)/sulfonated cation exchange resin (SCER) membrane for BSA separation

Shoparwe

Otitoju

Ahmad

2017

J of Applied Polymer Sci

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In this study, antifouling membranes were prepared through dry wet‐phase inversion method. The incorporation of electrostatistically charged group of sulfonate cation exchange resins (SCER) into polyethersulfone membrane matrix attempts to give a synergistic combination of properties for bovine serum albumin (BSA) removal. The effect of different composition of SCER into the blend membranes were characterized using scanning electron microscopy, atomic force microscopy, porosimeter, attenuated total reflectance Fourier transform infrared spectroscopy, and goniometer. All the prepared membranes were evaluated for BSA separation. The membrane resistance of all membranes decreases with increase in SCER loading. Among all membranes, P3 membrane shows a better fouling, reversible and irreversible resistance for BSA, signifying that the attached BSA on the membrane surface can be easily removed by physical cleaning. The improvement in hydrophilicity of P3 membrane was found to be the dominant factor in mitigating BSA fouling. The results demonstrated that BSA fouling could be alleviated by varying SCER concentration in the polyethersulfone matrix. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45854.

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Polyhedral Oligomeric Silsesquioxane (POSS) Nano‐Composite Separation Membranes − A Review

Chen

Dumée

2018

Adv Eng Mater

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Nano‐composite membranes are developed to overcome the limitation on trade‐off effect of permeability and selectivity from commercial membranes, however, careful selection of the nano‐fillers is required to match the selection criteria for specific applications. Polyhedral oligomeric silsesquioxane (POSS) nano‐particles are studied as the filler for nano‐composite membrane design for their unique 3‐dimensional building block property and flexible functionality toward the enhancement of separation. The review paper presents the benefits brought by POSS for nano‐composite membranes design, systematically compared to pristine or reference membranes. The scope of the review comprehensively includes liquid separation driven by pressure, desalination, solvent separation, gas separation, and proton exchange membranes. The free volume and surface charge modification as well as the structural enhancement from POSS incorporation are highlighted as keys to affect the trade‐off between permeation and selectivity and future developments for POSS nano‐composite membranes are discussed.

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Application of sulfonic acid group functionalized graphene oxide to improve hydrophilicity, permeability, and antifouling of PVDF nanocomposite ultrafiltration membranes

Cited by 404 publications

References 50 publications

Fabrication of a SGO/PVDF‐g‐PSSA composite proton‐exchange membrane and its enhanced performance in microbial fuel cells

Fabrication of a SGO/PVDF‐g‐PSSA composite proton‐exchange membrane and its enhanced performance in microbial fuel cells

Fouling evaluation of polyethersulfone (PES)/sulfonated cation exchange resin (SCER) membrane for BSA separation

Polyhedral Oligomeric Silsesquioxane (POSS) Nano‐Composite Separation Membranes − A Review

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