Tailored polymer nanocomposite membranes based on carbon, metal oxide and silicon nanomaterials: a review

Saraswathi, Meenakshi Sundaram Sri Abirami; Nagendran, A.; Rana, Dipak

doi:10.1039/c8ta11460a

Cited by 116 publications

(26 citation statements)

References 305 publications

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“…The results are reported in terms of FRR, which is a good indication of the membrane fouling recovery after backwashing. 44 The results of the FRR for the modified membranes and pristine PVDF membrane before and after UV exposure are shown in Figure 6. Among all of the membranes, the pristine PVDF membrane showed the lowest FRR because of the hydrophobic nature of the PVDF.…”

Section: Antifouling Propertiesmentioning

confidence: 99%

Polydopamine‐coated poly(vinylidene fluoride) membranes with high ultraviolet resistance and antifouling properties for a photocatalytic membrane reactor

Muchtar

Wahab

Fang

et al. 2018

J of Applied Polymer Sci

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We modified poly(vinylidene fluoride) (PVDF) membranes with a polydopamine (PDA) coating for photocatalytic membrane reactor application with appropriate UV resistance and studied the effects of the PDA coating conditions (i.e., coating time and dopamine concentration) and UV irradiation time on the modified PVDF membrane properties. The PVDF membrane that was surface‐coated with the appropriate dopamine solution concentration and coating time played a key role in controlling the membrane properties and in protecting the modified membrane against UV radiation. The optimization of the coating condition not only completely protected the modified membrane from free‐radical attack initiated through UV irradiation but also improved the membrane hydrophilicity, antifouling properties, filtration performance, and mechanical strength of the membrane. UV irradiation of the membrane that was surface‐coated with a high‐concentration dopamine solution for a long coating time resulted in a higher mechanical strength than that of the membrane without the application of UV irradiation. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47312.

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Section: Antifouling Propertiesmentioning

confidence: 99%

Polydopamine‐coated poly(vinylidene fluoride) membranes with high ultraviolet resistance and antifouling properties for a photocatalytic membrane reactor

Muchtar

Wahab

Fang

et al. 2018

J of Applied Polymer Sci

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“…Hvid et al demonstrated that the UF membranes with hydrophilic surfaces are less exposed to protein fouling and prompted the methods to develop the membrane with the more hydrophilic surface through appropriate modifiers as well as surface coatings 6 . The benefits of incorporation and in‐situ immobilization of nanoadditives to improve the UF membrane performance are also reported 7–9 . On account of desirable film‐forming properties fabrication of CA‐based UF membranes for the purpose of water treatment applications is most widely reported 10–14 .…”

Section: Introductionmentioning

confidence: 99%

“…The development of surface‐modified polymeric UF membranes using nanoadditives has become more popular. These polymer nanocomposite membranes showed excellent stability, permeation, and antifouling ability on account of their synergistic properties due to the interaction of nanoadditives with polymer and the state of dispersion 16–19 . Zhu et al investigated the UF performance of metal oxide nanoparticles such as ZnO, TiO 2 , and Al 2 O 3 incorporated polysulfone UF membrane and found that the TiO 2 nanoparticles incorporated membrane had better hydrophilicity and permeability 20 .…”

Section: Introductionmentioning

confidence: 99%

Cellulose acetate ultrafiltration membranes customized with copper oxide nanoparticles for efficient separation with antifouling behavior

Vetrivel

Saraswathi

Rana

et al. 2020

J of Applied Polymer Sci

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Cellulose acetate (CA) nanocomposite ultrafiltration membranes are fabricated with copper oxide (CuO) nanoparticles with the aim of improving efficient protein separation and antifouling performance. CuO nanoparticles are synthesized from cupric nitrate using a wet precipitation method and characterized by FTIR and XRD. CA/CuO nanocomposite membranes fabricated using 0.5, 1.0, and 1.5 wt% of CuO nanoparticles individually by simple phase inversion technique. The CA nanocomposite membrane with 0.5 wt% of hydrophilic CuO exhibited enhanced PWF of 118.6 Lm −2 h −1 due to the improvement in porosity and water uptake. This is in good agreement with the enhanced hydrophilicity of the CA/CuO nanocomposite membranes results observed in surface contact angle and morphological investigations. Further, 95.5% of BSA separation and 94.7% of flux recovery ratio (FRR) indicates its superior antifouling potential caused due to the presence of the hydration layer at the CA/CuO membrane surface. Among all the fabricated membranes, the CA-0.5 nanocomposite membrane with 0.5 wt% of CuO exhibited superiorly improved hydrophilicity, water permeation, BSA separation, and antifouling performance indicates its potential use in water and wastewater treatment applications.

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“…https://doi.org/10.1063/1.5119338 Nanoporous media, in particular, monolithic porous membranes, play an increasing scientific and technological role. [1][2][3] Among the applications of porous membranes stand out filtration and separation processes, [4][5][6] the study of confinement effects in soft matter, [7][8][9] and energy harvesting. 10,11 However, their characterization in terms of pore size and pore homogeneity is still an extremely demanding experimental task, even though it is of crucial importance for the interpretation of experiments and for the understanding of functional performance of nanoporous membranes.…”

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confidence: 99%

Nondestructive high-throughput screening of nanopore geometry in porous membranes by imbibition

Cencha

Huber

Kappl

et al. 2019

Applied Physics Letters

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A fluid dynamic model for imbibition into closed-end, axisymmetric pores having diameters that change as a function of the pore depth is presented. Despite the fact that liquid invasion into nonbranched closed-end pores is characterized by a wealth of different transient and/or metastable nonequilibrium stages related to precursor film formation, we show that a simple hydraulic model accounting for geometry-and air compression-induced deviations from classical Lucas-Washburn dynamics precisely describes the imbibition dynamics except at the late stage. The model was validated by laser interferometry experiments with submillisecond temporal resolution. Imbibition of three simple liquids (isopropanol, ethanol, and hexane) into self-ordered anodic alumina membranes containing arrays of parallel closed-end nanopores characterized by slight conicity was studied. The model provides an improved description of nanoscale fluid dynamics and allows geometric characterization of nanoporous membranes by their imbibition kinetics accounting for the back pressure of the compressed gas. Thus, a precise calibration of porous membranes with simple liquids becomes possible, and changes in the mean pore diameter as a function of the pore depth can be assessed.

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Tailored polymer nanocomposite membranes based on carbon, metal oxide and silicon nanomaterials: a review

Abstract: Research into the structure, synthesis and properties of nanoscale materials has increased at an enormous pace over the past decades since they have a wide variety of applications ranging from adsorption to separation processes in water treatment.

Cited by 116 publications

References 305 publications

Polydopamine‐coated poly(vinylidene fluoride) membranes with high ultraviolet resistance and antifouling properties for a photocatalytic membrane reactor

Polydopamine‐coated poly(vinylidene fluoride) membranes with high ultraviolet resistance and antifouling properties for a photocatalytic membrane reactor

Cellulose acetate ultrafiltration membranes customized with copper oxide nanoparticles for efficient separation with antifouling behavior

Nondestructive high-throughput screening of nanopore geometry in porous membranes by imbibition

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