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Article: Hollow fiber membrane decorated with Ag/MWNTs: Toward effective water disinfection and biofouling control

TitleHollow fiber membrane decorated with Ag/MWNTs: Toward effective water disinfection and biofouling control
Authors
Issue Date2011
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/ancac3/index.html
Citation
Acs Nano, 2011, v. 5 n. 12, p. 10033-10040 How to Cite?
AbstractThe currently applied disinfection methods during water treatment provide effective solutions to kill pathogens, but also generate harmful byproducts, which are required to be treated with additional efforts. In this work, an alternative and safer water disinfection system consisting of silver nanoparticle/multiwalled carbon nanotubes (Ag/MWNTs) coated on a polyacrylonitrile (PAN) hollow fiber membrane, Ag/MWNTs/PAN, has been developed. Silver nanoparticles of controlled sizes were coated on polyethylene glycol-grafted MWNTs. Ag/MWNTs were then covalently coated on the external surface of a chemically modified PAN hollow fiber membrane to act as a disinfection barrier. A continuous filtration test using E. coli containing feedwater was conducted for the pristine PAN and Ag/MWNTs/PAN composite membranes. The Ag/MWNT coating significantly enhanced the antimicrobial activities and antifouling properties of the membrane against E. coli. Under the continuous filtration mode using E. coli feedwater, the relative flux drop over Ag/MWNTs/PAN was 6%, which was significantly lower than that over the pristine PAN (55%) at 20 h of filtration. The presence of the Ag/MWNT disinfection layer effectively inhibited the growth of bacteria in the filtration module and prevented the formation of biofilm on the surface of the membrane. Such distinctive antimicrobial properties of the composite membrane is attributed to the proper dispersion of silver nanoparticles on the external surface of the membrane, leading to direct contact with bacterium cells. © 2011 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/185413
ISSN
2015 Impact Factor: 13.334
2015 SCImago Journal Rankings: 7.120
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorGunawan, Pen_US
dc.contributor.authorGuan, Cen_US
dc.contributor.authorSong, Xen_US
dc.contributor.authorZhang, Qen_US
dc.contributor.authorLeong, SSJen_US
dc.contributor.authorTang, Cen_US
dc.contributor.authorChen, Yen_US
dc.contributor.authorChanPark, MBen_US
dc.contributor.authorChang, MWen_US
dc.contributor.authorWang, Ken_US
dc.contributor.authorXu, Ren_US
dc.date.accessioned2013-07-30T07:32:22Z-
dc.date.available2013-07-30T07:32:22Z-
dc.date.issued2011en_US
dc.identifier.citationAcs Nano, 2011, v. 5 n. 12, p. 10033-10040en_US
dc.identifier.issn1936-0851en_US
dc.identifier.urihttp://hdl.handle.net/10722/185413-
dc.description.abstractThe currently applied disinfection methods during water treatment provide effective solutions to kill pathogens, but also generate harmful byproducts, which are required to be treated with additional efforts. In this work, an alternative and safer water disinfection system consisting of silver nanoparticle/multiwalled carbon nanotubes (Ag/MWNTs) coated on a polyacrylonitrile (PAN) hollow fiber membrane, Ag/MWNTs/PAN, has been developed. Silver nanoparticles of controlled sizes were coated on polyethylene glycol-grafted MWNTs. Ag/MWNTs were then covalently coated on the external surface of a chemically modified PAN hollow fiber membrane to act as a disinfection barrier. A continuous filtration test using E. coli containing feedwater was conducted for the pristine PAN and Ag/MWNTs/PAN composite membranes. The Ag/MWNT coating significantly enhanced the antimicrobial activities and antifouling properties of the membrane against E. coli. Under the continuous filtration mode using E. coli feedwater, the relative flux drop over Ag/MWNTs/PAN was 6%, which was significantly lower than that over the pristine PAN (55%) at 20 h of filtration. The presence of the Ag/MWNT disinfection layer effectively inhibited the growth of bacteria in the filtration module and prevented the formation of biofilm on the surface of the membrane. Such distinctive antimicrobial properties of the composite membrane is attributed to the proper dispersion of silver nanoparticles on the external surface of the membrane, leading to direct contact with bacterium cells. © 2011 American Chemical Society.en_US
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/ancac3/index.htmlen_US
dc.relation.ispartofACS Nanoen_US
dc.subject.meshAdsorptionen_US
dc.subject.meshBiofouling - Prevention & Controlen_US
dc.subject.meshEscherichia Coli - Isolation & Purificationen_US
dc.subject.meshMaterials Testingen_US
dc.subject.meshMembranes, Artificialen_US
dc.subject.meshNanotubes, Carbon - Chemistry - Ultrastructureen_US
dc.subject.meshParticle Sizeen_US
dc.subject.meshPorosityen_US
dc.subject.meshSilver - Chemistryen_US
dc.subject.meshUltrafiltration - Methodsen_US
dc.subject.meshWater Microbiologyen_US
dc.subject.meshWater Pollutants - Isolation & Purificationen_US
dc.subject.meshWater Purification - Methodsen_US
dc.titleHollow fiber membrane decorated with Ag/MWNTs: Toward effective water disinfection and biofouling controlen_US
dc.typeArticleen_US
dc.identifier.emailTang, C: tangc@hku.hken_US
dc.identifier.authorityTang, C=rp01765en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1021/nn2038725en_US
dc.identifier.pmid22077241-
dc.identifier.scopuseid_2-s2.0-84555197341en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84555197341&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume5en_US
dc.identifier.issue12en_US
dc.identifier.spage10033en_US
dc.identifier.epage10040en_US
dc.identifier.isiWOS:000298316700080-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridGunawan, P=21740849900en_US
dc.identifier.scopusauthoridGuan, C=24831510000en_US
dc.identifier.scopusauthoridSong, X=36151250400en_US
dc.identifier.scopusauthoridZhang, Q=54796280900en_US
dc.identifier.scopusauthoridLeong, SSJ=35299776900en_US
dc.identifier.scopusauthoridTang, C=35489259800en_US
dc.identifier.scopusauthoridChen, Y=35261539500en_US
dc.identifier.scopusauthoridChanPark, MB=6701582052en_US
dc.identifier.scopusauthoridChang, MW=35291205800en_US
dc.identifier.scopusauthoridWang, K=7501400880en_US
dc.identifier.scopusauthoridXu, R=34875969000en_US

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