Enhanced Performance of PVDF Composite Ultrafiltration Membrane via Degradation of Collagen-Modified Graphene Oxide

Hou, Yonggang; Lv, Shenghua; Hu, Haoyan; Wu, Xiaofeng; Liu, Leipeng

doi:10.3390/app112311513

Cited by 5 publications

(1 citation statement)

References 29 publications

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“…Usually, different authors have calculated this parameter using the initial and post-treatment water flux [ 10 , 14 , 15 , 16 ]. In this work, the coefficients of permeability to the solvent (water) have been used initially and after the dye has passed through the membrane.…”

Section: Methodsmentioning

confidence: 99%

Ultrafiltration Membranes Modified with Reduced Graphene Oxide: Effect on Methyl Green Removal from Aqueous Solution

et al. 2023

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In this work, three types of ultrafiltration membranes with different characteristics (GR60PP, RC70PP and GR80PP) have been tested for the removal of the dye methyl green. The tests were first carried out with the three membranes without any modification and then with the membranes’ surfaces modified with reduced graphene oxide (rGO). The modification was achieved through physical treatment. The CR70PP membrane did not support the modification treatment and was discarded. The other membranes were initially characterized with distilled water tests to study the permeability to the solvent, and later, the permeate fluxes and the values of rejection coefficients were obtained at different working pressures with a fixed dye initial concentration. In addition, SEM images and SEM-EDX spectra of the native and modified membranes were obtained before and after the dye tests. The GR60PP membrane has shown the best results in relation to the modification because it has increased its rejection levels. On the opposite, the GR80PP membrane performs better without surface modification, achieving the highest rejection values and the highest permeate fluxes in its native form.

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Section: Methodsmentioning

confidence: 99%

Ultrafiltration Membranes Modified with Reduced Graphene Oxide: Effect on Methyl Green Removal from Aqueous Solution

et al. 2023

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Enhanced permeability and antifouling properties of polyvinylidene fluoride ultrafiltration membrane with hydrophilic P(AMPS‐co‐MMA) copolymer

Wang

Cui

Chen

et al. 2023

J of Applied Polymer Sci

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In this research, a new amphiphilic random copolymer of 2-acrylamido-2-methylpropane sulfonic acid (AMPS) and methyl methacrylate (MMA) (abbreviated as P(AMPS-co-MMA)) was synthesized by solution free radical copolymerization method, and was introduced into hydrophobic polyvinylidene fluoride (PVDF) membrane via nonsolvent induced phase separation (NIPS) process without adding pore-forming agent to enhance the permeability and antifouling properties of PVDF ultrafiltration membrane. The FT-NMR spectroscopy confirmed the chemical structure of P(AMPS-co-MMA) and copolymerization of AMPS and MMA, the effects of P(AMPS-co-MMA) on membrane surface chemical compositions, morphology, roughness, charge, hydrophilicity, permeability and antifouling properties were characterized indetail. The results indicate that the PVDF/P(AMPS-co-MMA) composite membranes demonstrated excellent permeability, improved antifouling property and long-term stability due to the optimized membrane microstructure, stronger hydrophilicity and endowed negative charge. The PVDF composite membrane blended with 1.5 wt% P(AMPS-co-MMA) showed the best membrane performances, the pure water flux was 286.5 LÁm À2 Áh À1 while the BSA rejection was as high as 98%, and the flux recovery ratio (FRR) and reversible fouling ratio to the total fouling ratio (R r /R t ) reached 94.8% and 87% respectively, which outpaced ever reported and commercial PVDF membranes. Therefore, P(AMPS-co-MMA) copolymer was expected to be a potential excellent pore-forming material in fabricating high-performance membranes.

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Advancements in polymeric membranes for challenging water filtration environments: A comprehensive review

Seah,

Chua,

Ang

et al. 2024

Journal of Environmental Chemical Engineering

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Enhanced Performance of PVDF Composite Ultrafiltration Membrane via Degradation of Collagen-Modified Graphene Oxide

Cited by 5 publications

References 29 publications

Ultrafiltration Membranes Modified with Reduced Graphene Oxide: Effect on Methyl Green Removal from Aqueous Solution

Ultrafiltration Membranes Modified with Reduced Graphene Oxide: Effect on Methyl Green Removal from Aqueous Solution

Enhanced permeability and antifouling properties of polyvinylidene fluoride ultrafiltration membrane with hydrophilic P(AMPS‐co‐MMA) copolymer

Advancements in polymeric membranes for challenging water filtration environments: A comprehensive review

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