Biogenic silver nanoparticles (bio-Ag0) decrease biofouling of bio-Ag0/PES nanocomposite membranes

Zhang, Manying; Zhang, Kaisong; Gusseme, Bart De; Verstraete, Willy

doi:10.1016/j.watres.2012.01.015

Cited by 199 publications

(99 citation statements)

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“…5 , which was consistent with previous results. 20 The overall contact angle reduced with the incorporation of Ag/g-C 3 N 4 , which revealed that the hydrophilicity of membrane was increased by Ag/g-C 3 N 4 . The existence of hydrophilic groups such as -NH 2 or -NH aer treated by sulfuric acid and nitric acid and the high affinity of Ag to water may be responsible for the hydrophilicity increase.…”

Section: Membrane Morphology As Shown Inmentioning

confidence: 95%

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Ag modified g-C₃N₄ composite entrapped PES UF membrane with visible-light-driven photocatalytic antifouling performance

et al. 2017

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Membrane fouling is still the main obstacle for the wider application of membrane processes. In this study, different amounts of silver modified graphitic carbon nitride (Ag/g-C 3 N 4 ) were firstly introduced into polyethersulfone (PES) membranes by blending via a phase-inversion method. The impacts of Ag/g-C 3 N 4 addition on the membrane morphology, filtration and photocatalysis antifouling properties of Ag/g-C 3 N 4 /PES nanocomposite membranes were systematically studied. The results illustrated that the addition of Ag/g-C 3 N 4 could make the finger-like voids in Ag/g-C 3 N 4 nanocomposite membrane longer and wider, increasing the hydrophilicity and filtration property of the nanocomposite membrane. Also the addition of Ag/g-C 3 N 4 nanosheets could endow the nanocomposite membranes with excellent antibacterial, photocatalytic dye degradation and antifouling properties under visible light irradiation.

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Section: Membrane Morphology As Shown Inmentioning

confidence: 95%

“…20 Briey, the samples with the same diameter were immersed in the dilute bacterial suspension. Aer 12 h incubation the number of living bacteria was determined by Colony forming units (CFU) counting.…”

Section: Antibacterial Testmentioning

confidence: 99%

Ag modified g-C₃N₄ composite entrapped PES UF membrane with visible-light-driven photocatalytic antifouling performance

et al. 2017

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“…The biogenic silver nanopaticles (Bio-Ag 0 -6) was synthesized with Lactobacillus fermentum LMG 8900 as reported in a previous work 22,26 . The detailed procedure was as followed: dried biomass was dissolved to in Milli-Q water in an Erlenmeyer flask, Presence of silver nanoparticles was confirmed by energy dispersive X-ray spectra (EDS) and elemental mapping.…”

Section: Introductionmentioning

confidence: 99%

The anti-biofouling properties of thin-film composite nanofiltration membranes grafted with biogenic silver nanoparticles

Liu

Fang

et al. 2015

Desalination

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2015) 'The anti-biofouling properties of thin-lm composite nanoltration membranes grafted with biogenic silver nanoparticles. ', Desalination., Further information on publisher's website: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. ABSTRACT:Biofouling is still one of the most challenging issues of nanofiltration.One of the practical strategies to reduce biofouling is to develop novel anti-biofouling membranes. Herein, biogenic silver nanoparticles (BioAg 0 -6) with the averaged diameter of only 6nm were firstly grafted on the surface of polyamide NF membrane.The effect of grafted BioAg 0 -6 on the performance of thin-film composite (TFC) NF membranes was systematically investigated with a comparison to the grafted chemical AgNPs. BioAg 0 -6 grafted membrane (TFC-S-BioAg) increased the hydrophilicity of the TFC membrane and water permeability, while maintaining the relatively high salt rejection. The result of silver leaching experiment indicated that the grafted BioAg 0 -6 had a better stability on the membranes, the ratio of remained silver in the TFC-S-BioAg membrane was 95%, after soaked in pure water for 50 days. After 4 months immersion, the rejection of TFC-S-BioAg membrane remained more than 90% of initial rejection. The results of disk diffusion test revealed that both of TFC-S-BioAg membrane and TFC-S-ChemAg membrane showed effective anti-bacterial ability to inhibit P.aeruginosa and E.coli growth, the TFC-S-BioAg membrane showed more excellent and longer lasting antibacterial property. Therefore, BioAg 0 -6 grafed TFC membranes could be potential as an effective strategy to decrease biofouling in nanofiltration process.

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“…Biocidal nanomaterials are an attractive field of science that has the capability to other things such as enhance medical devices [1], wastewater treatment [2], food packaging [3], synthetic textiles [4], and dentistry [5]. Development of novel and efficient antibacterial agents is urgently required due to the growing antibacterial resistance spectrum of bacterial infections.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Zinc Oxide/Graphene Oxide Nanocomposites as Antibacterial Materials Against Staphylococcus Aureus and Escherichia Coli

Hieu¹

2018

JST

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New materials with good antibacterial activity and less toxicity to other species have attracted numerous research interests. Modified Hummers method was used for preparing graphene oxide (GO). Zinc oxide/graphene oxide (ZnO/GO) nanocomposites were synthesized with three different ratios (0.5:1, 1:1, and 2:1) by solution precipitation method. The ZnO/GO nanocomposites were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, Raman spectroscopy, Brunauer-Emmett-Tellerspecific surface area, and transmission electron microscopy image. The characterization results showed that ZnO nanoparticles with a mean size of 12-18 nm were randomly decorated on the surfaces and edges of GO sheets. ZnO/GO 1:1 with a high specific surface area of 65 m 2 /g was obtained. The antibacterial activity of ZnO, GO, and ZnO/GO was tested against Gram negative bacteria escherichia coli (E. coli) and Gram positive bacteria staphylococcus aureus (S. aureus) using well diffusion method. The test results confirmed that antibacterial activity of ZnO/GO was higher than that of GO and ZnO. Additionally, the ZnO/GO with the ratio of 1:1 is the strongest activity and more active against S. aureus than against E. coli and minimal inhibitory concentration (MIC) value of ZnO/GO 1:1 is 80 µg/mL for S. aureus and 160 µg/mL for E. coli. This novel nanocomposite could be used as a potential material for antimicrobial application.

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Biogenic silver nanoparticles (bio-Ag0) decrease biofouling of bio-Ag0/PES nanocomposite membranes

Cited by 199 publications

References 38 publications

Ag modified g-C₃N₄ composite entrapped PES UF membrane with visible-light-driven photocatalytic antifouling performance

Ag modified g-C₃N₄ composite entrapped PES UF membrane with visible-light-driven photocatalytic antifouling performance

The anti-biofouling properties of thin-film composite nanofiltration membranes grafted with biogenic silver nanoparticles

Synthesis of Zinc Oxide/Graphene Oxide Nanocomposites as Antibacterial Materials Against Staphylococcus Aureus and Escherichia Coli

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Biogenic silver nanoparticles (bio-Ag0) decrease biofouling of bio-Ag0/PES nanocomposite membranes

Cited by 199 publications

References 38 publications

Ag modified g-C3N4 composite entrapped PES UF membrane with visible-light-driven photocatalytic antifouling performance

Ag modified g-C3N4 composite entrapped PES UF membrane with visible-light-driven photocatalytic antifouling performance

The anti-biofouling properties of thin-film composite nanofiltration membranes grafted with biogenic silver nanoparticles

Synthesis of Zinc Oxide/Graphene Oxide Nanocomposites as Antibacterial Materials Against Staphylococcus Aureus and Escherichia Coli

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Ag modified g-C₃N₄ composite entrapped PES UF membrane with visible-light-driven photocatalytic antifouling performance

Ag modified g-C₃N₄ composite entrapped PES UF membrane with visible-light-driven photocatalytic antifouling performance