Fabrication of anti-fouling PVDF nanocomposite membranes using manganese dioxide nanospheres with tailored morphology, hydrophilicity and permeation

Saraswathi, Meenakshi Sundaram Sri Abirami; Rana, Dipak; Divya, Kumar; Alwarappan, Subbiah; Nagendran, A.

doi:10.1039/c8nj02701c

Cited by 40 publications

(18 citation statements)

References 35 publications

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“…The peaks at 2θ angles of 28.34°, 37.59°, 49.58°, 59.98°, and 68.13° are corresponding to the (110), (101), (210), (220), and (002) planes, respectively, are attributed to the tetragonal structure of HMO nanoparticles. The FESEM image of HMO nanoparticles as shown in Figure C is confirmed the uniform distribution with triangular edges and corners as reported by Sri Abirami Saraswathi et al…”

Section: Resultssupporting

confidence: 85%

Cellulose acetate nanocomposite ultrafiltration membranes tailored with hydrous manganese dioxide nanoparticles for water treatment applications

Vetrivel

Rana

Saraswathi

et al. 2019

Polymers for Advanced Techs

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Hydrous manganese dioxide (HMO) nanoparticles incorporated cellulose acetate (CA) composite ultrafiltration (UF) membranes are prepared with the aim of improving the water permeation and BSA contaminant removal. The HMO nanoparticles are synthesized from manganese ion and characterized by FT-IR, XRD, and FESEM. The effect of variation of HMO on CA membranes is probed using FT-IR, EDAX, contact angle, SEM, and AFM analysis to demonstrate their chemical functionality, hydrophilicity, and morphology. CA/HMO membranes are showing the enhancement in pure water flux (PWF), water uptake, porosity, hydrophilicity, fouling resistance, BSA rejection, and flux recovery ratio (FRR). CA-1 membrane displayed higher PWF (143.6 Lm 2 h −1 ), BSA rejection (95.9%), irreversible fouling (93.3%), and FRR (93.3%).Overall results confirmed that the CA/HMO nanocomposite UF membranes overcome the bottlenecks and shows potential for water treatment applications.

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Section: Resultssupporting

confidence: 85%

Cellulose acetate nanocomposite ultrafiltration membranes tailored with hydrous manganese dioxide nanoparticles for water treatment applications

Vetrivel

Rana

Saraswathi

et al. 2019

Polymers for Advanced Techs

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“…The incorporation of the nanoparticles was found to increase the tensile strength with a decrease of elongation at break in one study [ 26 ]. A similar result, but without looking into the elongation at break, was also reported elsewhere [ 21 ]. The decrease of both properties was observed in another study [ 18 ].…”

Section: Introductionsupporting

confidence: 88%

“…This was demonstrated in 14 studies, and in some of the cases this was attributed to the measured increase in surface hydrophilicity caused by the hydrophilic particles [ 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ]. Such increase in hydrophilicity was also reported in many cases [ 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 23 , 24 ]. In seven studies, the permeability decreased at higher nanoparticle concentrations; this was attributed to pore blocking by agglomerated nanofiller [ 14 , 15 , 16 , 17 , 18 , 23 , 25 ].…”

Section: Introductionmentioning

confidence: 85%

“…The macro-void formation in the membrane cross-section was decreased in five studies, likely caused by the same change in viscosity [ 14 , 16 , 18 , 25 , 28 ]. In contrast, in three other studies an increase in macro-void formation tendency with nanofiller addition was observed [ 17 , 20 , 21 ], and one study showed an initial increase in macro-void formation that deceased at higher particle concentration [ 15 ].…”

Section: Introductionmentioning

confidence: 97%

“…Since these are all metal oxides, it is expected that their effect on the PVDF membrane’s formation will be similar to the effect of zinc oxide because of similar hydrophilicity and Hansen solubility parameters [ 12 ]. An overview table, showing the most important results of these studies [ 11 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ], is provided in the Supplementary Materials ( Table S1 ), and the most important results are recapitulated in the following paragraphs.…”

Section: Introductionmentioning

confidence: 99%

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Polymer Nanocomposite Ultrafiltration Membranes: The Influence of Polymeric Additive, Dispersion Quality and Particle Modification on the Integration of Zinc Oxide Nanoparticles into Polyvinylidene Difluoride Membranes

Berg

Ulbricht

2020

Membranes

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This study aims to improve the understanding of the influence of metal oxide nanofillers on polyvinylidene difluoride (PVDF) ultrafiltration membranes. Zinc oxide nanoparticles were chosen as the model filler material. The membranes were prepared by non-solvent induced phase separation from PVDF solutions in N-methylpyrrolidone. The influences of the addition of polyvinylpyrrolidone (PVP), the nanoparticle dispersion quality, and a surface modification of the ZnO particles with PVP on the nanofiller integration into the polymer matrix and the resulting membrane separation performance, were evaluated. Unmodified and PVP-modified nanoparticles were characterized by evaluation of their Hansen solubility parameters. The membranes were characterized by ultrafiltration experiments, scanning electron microscopy (SEM) and with respect to mechanical properties, while the dope solutions were analyzed by rheology in order to judge about dispersion quality. Pure water permeability and solute rejection data revealed that the dominant effect of the addition of pristine ZnO nanoparticles was a major decrease in permeability caused by pore blocking. In SEM analyses, it was seen that the plain nanofiller did not integrate well into the polymer matrix. Importantly, it was found that the surface modification of the nanofiller, as well as a high dispersion quality, can be strategically used to enhance the integration of the nanofiller and thus suppress pore blocking, leading to membranes with high ultrafiltration rejection and permeability simultaneously. Overall, the study provides relevant insights into a new approach to integrating nanofillers into polymer nanocomposite membranes for improving their properties and performance.

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Highly hydrophilic and antifouling poly(vinylidene fluoride) hybrid ultrafiltration membranes incorporated with silver‐loaded iron‐based metal–organic frameworks

Rameesha,

Rana,

Nagendran

2023

J of Applied Polymer Sci

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Silver‐loaded iron‐based metal–organic frameworks (Ag@FeBTC) are synthesized and incorporated with poly (vinylidene fluoride) (PVDF) to make hybrid ultrafiltration (UF) membranes and are efficiently utilized to treat water containing macromolecular pollutants. The chemical functionality and semi‐amorphous nature of the Ag@FeBTC are validated by FT‐IR and XRD, respectively. The morphology and elemental composition of PVDF/Ag@FeBTC membranes are probed by SEM and EDX mapping. The creation of pores is visibly seen in cross‐sectional SEM images and the improvement in roughness is noticed in AFM images. Because of the improved hydrophilicity of Ag@FeBTC on the PVDF membrane matrix, the contact angle is reduced to 33.9°. The excellent dispersion of Ag@FeBTC on the PVDF membrane matrix is observed through elemental mapping. The PVDF/Ag@FeBTC hybrid membranes exhibited higher pure water flux (160 L m−2 h−1) and greater than 90% rejection as well as flux recovery ratio for foulant removal (BSA and HA). The antimicrobial property of PVDF/Ag@FeBTC hybrid membranes is probed using a zone of inhibition test against E. coli and S. aureus, and the results revealed that the hybrid membranes possess superior antibacterial behavior. The long‐term stability of MOF in hybrid membranes is confirmed by AAS. Overall characterization and performance results of the hybrid PVDF/Ag@FeBTC UF membrane clearly demonstrated its potential use for water treatment applications.

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Fabrication of anti-fouling PVDF nanocomposite membranes using manganese dioxide nanospheres with tailored morphology, hydrophilicity and permeation

Abstract: Manganese dioxide (MnO2) nanospheres were prepared by a facile hydrothermal technique and their influence on the permeation and antifouling properties of poly(vinylidene fluoride) (PVDF) ultrafiltration (UF) membranes was investigated.

Cited by 40 publications

References 35 publications

Cellulose acetate nanocomposite ultrafiltration membranes tailored with hydrous manganese dioxide nanoparticles for water treatment applications

Cellulose acetate nanocomposite ultrafiltration membranes tailored with hydrous manganese dioxide nanoparticles for water treatment applications

Polymer Nanocomposite Ultrafiltration Membranes: The Influence of Polymeric Additive, Dispersion Quality and Particle Modification on the Integration of Zinc Oxide Nanoparticles into Polyvinylidene Difluoride Membranes

Highly hydrophilic and antifouling poly(vinylidene fluoride) hybrid ultrafiltration membranes incorporated with silver‐loaded iron‐based metal–organic frameworks

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