Silver-enhanced block copolymer membranes with biocidal activity

Handle URI:
http://hdl.handle.net/10754/563855
Title:
Silver-enhanced block copolymer membranes with biocidal activity
Authors:
Madhavan, Poornima ( 0000-0003-0570-8174 ) ; Hong, Pei-Ying ( 0000-0002-4474-6600 ) ; Sougrat, Rachid; Nunes, Suzana Pereira ( 0000-0002-3669-138X )
Abstract:
Silver nanoparticles were deposited on the surface and pore walls of block copolymer membranes with highly ordered pore structure. Pyridine blocks constitute the pore surfaces, complexing silver ions and promoting a homogeneous distribution. Nanoparticles were then formed by reduction with sodium borohydride. The morphology varied with the preparation conditions (pH and silver ion concentration), as confirmed by field emission scanning and transmission electron microscopy. Silver has a strong biocide activity, which for membranes can bring the advantage of minimizing the growth of bacteria and formation of biofilm. The membranes with nanoparticles prepared under different pH values and ion concentrations were incubated with Pseudomonas aeruginosa and compared with the control. The strongest biocidal activity was achieved with membranes containing membranes prepared under pH 9. Under these conditions, the best distribution with small particle size was observed by microscopy.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Advanced Nanofabrication, Imaging and Characterization Core Lab; Biological and Environmental Sciences and Engineering (BESE) Division; Environmental Science and Engineering Program; Core Labs; Environmental Microbial Safety and Biotechnology Lab; Nanostructured Polymeric Membrane Lab
Publisher:
American Chemical Society (ACS)
Journal:
ACS Applied Materials & Interfaces
Issue Date:
12-Nov-2014
DOI:
10.1021/am505594c
Type:
Article
ISSN:
19448244
Sponsors:
The authors thank Alaa Ragab for technical assistance. Research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST).
Appears in Collections:
Articles; Environmental Science and Engineering Program; Advanced Nanofabrication, Imaging and Characterization Core Lab; Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorMadhavan, Poornimaen
dc.contributor.authorHong, Pei-Yingen
dc.contributor.authorSougrat, Rachiden
dc.contributor.authorNunes, Suzana Pereiraen
dc.date.accessioned2015-08-03T12:17:06Zen
dc.date.available2015-08-03T12:17:06Zen
dc.date.issued2014-11-12en
dc.identifier.issn19448244en
dc.identifier.doi10.1021/am505594cen
dc.identifier.urihttp://hdl.handle.net/10754/563855en
dc.description.abstractSilver nanoparticles were deposited on the surface and pore walls of block copolymer membranes with highly ordered pore structure. Pyridine blocks constitute the pore surfaces, complexing silver ions and promoting a homogeneous distribution. Nanoparticles were then formed by reduction with sodium borohydride. The morphology varied with the preparation conditions (pH and silver ion concentration), as confirmed by field emission scanning and transmission electron microscopy. Silver has a strong biocide activity, which for membranes can bring the advantage of minimizing the growth of bacteria and formation of biofilm. The membranes with nanoparticles prepared under different pH values and ion concentrations were incubated with Pseudomonas aeruginosa and compared with the control. The strongest biocidal activity was achieved with membranes containing membranes prepared under pH 9. Under these conditions, the best distribution with small particle size was observed by microscopy.en
dc.description.sponsorshipThe authors thank Alaa Ragab for technical assistance. Research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST).en
dc.publisherAmerican Chemical Society (ACS)en
dc.subjectbiofoulingen
dc.subjectblock copolymer membranesen
dc.subjectpH responsiveen
dc.subjectpoly(4-vinylpyridine)en
dc.subjectpolystyreneen
dc.subjectsilver nanoparticlesen
dc.titleSilver-enhanced block copolymer membranes with biocidal activityen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Laben
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentEnvironmental Science and Engineering Programen
dc.contributor.departmentCore Labsen
dc.contributor.departmentEnvironmental Microbial Safety and Biotechnology Laben
dc.contributor.departmentNanostructured Polymeric Membrane Laben
dc.identifier.journalACS Applied Materials & Interfacesen
kaust.authorHong, Pei-Yingen
kaust.authorSougrat, Rachiden
kaust.authorNunes, Suzana Pereiraen
kaust.authorMadhavan, Poornimaen
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