Improving the hydrophilic and antifouling properties of polyvinylidene fluoride membrane by incorporation of novel nanohybrid GO@SiO2 particles

Zhu, Zhenya; Jiang, Jialiang; Wang, Xudong; Huo, Xiaonan; Xu, Yawei; Li, Qingqing; Wang, Lei

doi:10.1016/j.cej.2016.12.038

Cited by 101 publications

(51 citation statements)

References 33 publications

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“…Previous studies already proved that the hydrophilicity of membranes plays an important role in water transport resistance in NF separation [ 31 ]. The dynamically-assembled membranes are expected to provide improved flux and antifouling performance [ 32 ].…”

Section: Resultsmentioning

confidence: 99%

Preparation of Layer-by-Layer Nanofiltration Membranes by Dynamic Deposition and Crosslinking

et al. 2019

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In recent decades, the advancements in layer-by-layer (LBL) assembly technology have provoked increasing interest in the preparation of multilayer polyelectrolyte membranes with excellent performance. In the current study, a novel nanofiltration (NF) membrane was prepared by pressure-driven layer-by-layer (LBL) assembly of polyethylenimine (PEI) and polyacrylicacid (PAA) on a porous substrate with chemical crosslinking. The effect of deposition pressure on separation performance of the prepared membranes was studied. The surface morphology, hydrophilicity and the charge property of the dynamically-deposited membranes were compared with those prepared by static adsorption. The characterization results showed that dynamic deposition process resulted in a smoother membrane surface with improved hydrophilicity. The mechanism of water-path formation was proposed to interpret the effect of pressure on the membrane performance. Glutaraldehyde (GA) was used as a crosslinker to reduce the number of polyelectrolyte bilayers for obtaining good separation performance. The rejections of different inorganic salts of the dynamically-deposited NF membrane were also investigated.

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Section: Resultsmentioning

confidence: 99%

Preparation of Layer-by-Layer Nanofiltration Membranes by Dynamic Deposition and Crosslinking

et al. 2019

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“…In addition, the ZM-2 surface was more active in preventing abiotic fouling and biofouling, which suggests the signicant inuence of the high graing density in ZM-2 samples. [23][24][25]30,31 In situ SAXS measurements…”

Section: Antifouling Performance Of the Pcysma-graed Zwitterionic Mementioning

confidence: 99%

Fully bio-based zwitterionic membranes with superior antifouling and antibacterial properties prepared via surface-initiated free-radical polymerization of poly(cysteine methacrylate)

et al. 2018

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“…Further rise in TiO 2 dosage (1.5 and 2.0 wt%) results in the accumulation of nanoparticles inside the membrane matrix. This can be due to a heterogeneous dispersion of nanoparticles, a reduction in the surface potential, and a clogging of membrane pores [ 68 , 69 ]. The findings of the present and previous investigations revealed that the existence of TiO 2 nanoparticles in the matrix structure of the improved fibers enhances its hydrophilicity [ 41 ].…”

Section: Resultsmentioning

confidence: 99%

Novel PVDF-PVP Hollow Fiber Membrane Augmented with TiO2 Nanoparticles: Preparation, Characterization and Application for Copper Removal from Leachate

et al. 2021

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High proportion of copper has become a global challenge owing to its negative impact on the environment and public health complications. The present study focuses on the fabrication of a polyvinylidene fluoride (PVDF)-polyvinyl pyrrolidone (PVP) fiber membrane incorporated with varying loading (0, 0.5, 1.0, 1.5, and 2.0 wt%) of titanium dioxide (TiO2) nanoparticles via phase inversion technique to achieve hydrophilicity along with high selectivity for copper removal. The developed fibers were characterized based on scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), permeability, porosity, zeta potential, and contact angle. The improved membrane (with 1.0 wt% TiO2) concentration recorded the maximum flux (223 L/m2·h) and copper rejection (98.18%). Similarly, 1.0 wt% concentration of TiO2 nanoparticles made the membrane matrix more hydrophilic with the least contact angle of 50.01°. The maximum copper adsorption capacity of 69.68 mg/g was attained at 1.0 wt% TiO2 concentration. The experimental data of adsorption capacity were best fitted to the Freundlich isotherm model with R2 value of 0.99573. The hybrid membrane developed in this study has considerably eliminated copper from leachate and the concentration of copper in the permeate was substantially reduced to 0.044 mg/L, which is below standard discharge threshold.

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Improving the hydrophilic and antifouling properties of polyvinylidene fluoride membrane by incorporation of novel nanohybrid GO@SiO2 particles

Cited by 101 publications

References 33 publications

Preparation of Layer-by-Layer Nanofiltration Membranes by Dynamic Deposition and Crosslinking

Preparation of Layer-by-Layer Nanofiltration Membranes by Dynamic Deposition and Crosslinking

Fully bio-based zwitterionic membranes with superior antifouling and antibacterial properties prepared via surface-initiated free-radical polymerization of poly(cysteine methacrylate)

Novel PVDF-PVP Hollow Fiber Membrane Augmented with TiO2 Nanoparticles: Preparation, Characterization and Application for Copper Removal from Leachate

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