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Article: Hydrophilic Silver Nanoparticles Induce Selective Nanochannels in Thin Film Nanocomposite Polyamide Membranes

TitleHydrophilic Silver Nanoparticles Induce Selective Nanochannels in Thin Film Nanocomposite Polyamide Membranes
Authors
KeywordsDesalination
Economic and social effects
Hydrophilicity
Hydrophobicity
Metal nanoparticles
Issue Date2019
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/esthag
Citation
Environmental Science & Technology, 2019, v. 53 n. 9, p. 5301-5308 How to Cite?
AbstractThin-film nanocomposite (TFN) membranes have been widely studied over the past decade for their desalination applications. For some cases, the incorporation of nonporous hydrophilic nanofillers has been reported to greatly enhance membrane separation performance, yet the underlying mechanism is poorly understood. The current study systematically investigates TFN membranes incorporated with silver nanoparticles (AgNPs). For the first time, we reveal the formation of nanochannels of approximately 2.5 nm in size around the AgNPs, which can be attributed to the hydrolysis of trimesoyl chloride monomers and thus the termination of interfacial polymerization by the water layer around each hydrophilic nanoparticle. These nanochannels nearly tripled the membrane water permeability for the optimal membrane. In addition, this membrane showed increased rejection against NaCl, boron, and a set of small-molecular organic compounds (e.g., propylparaben, norfloxacin, and ofloxacin), thanks to its combined effects of improved size exclusion, enhanced Donnan exclusion, and suppressed hydrophobic interaction. Our work provides fundamental insights into the formation and transport mechanisms involved in solid-filler incorporated TFN membranes. Future studies should take advantage of this spontaneous nanochannel formation in the design of TFN to overcome the classical membrane permeability–selectivity trade-off.
Persistent Identifierhttp://hdl.handle.net/10722/272861
ISSN
2019 Impact Factor: 7.864
2015 SCImago Journal Rankings: 2.664

 

DC FieldValueLanguage
dc.contributor.authorYang, Z-
dc.contributor.authorGuo, H-
dc.contributor.authorYao, ZK-
dc.contributor.authorMei, Y-
dc.contributor.authorTang, CY-
dc.date.accessioned2019-08-06T09:17:56Z-
dc.date.available2019-08-06T09:17:56Z-
dc.date.issued2019-
dc.identifier.citationEnvironmental Science & Technology, 2019, v. 53 n. 9, p. 5301-5308-
dc.identifier.issn0013-936X-
dc.identifier.urihttp://hdl.handle.net/10722/272861-
dc.description.abstractThin-film nanocomposite (TFN) membranes have been widely studied over the past decade for their desalination applications. For some cases, the incorporation of nonporous hydrophilic nanofillers has been reported to greatly enhance membrane separation performance, yet the underlying mechanism is poorly understood. The current study systematically investigates TFN membranes incorporated with silver nanoparticles (AgNPs). For the first time, we reveal the formation of nanochannels of approximately 2.5 nm in size around the AgNPs, which can be attributed to the hydrolysis of trimesoyl chloride monomers and thus the termination of interfacial polymerization by the water layer around each hydrophilic nanoparticle. These nanochannels nearly tripled the membrane water permeability for the optimal membrane. In addition, this membrane showed increased rejection against NaCl, boron, and a set of small-molecular organic compounds (e.g., propylparaben, norfloxacin, and ofloxacin), thanks to its combined effects of improved size exclusion, enhanced Donnan exclusion, and suppressed hydrophobic interaction. Our work provides fundamental insights into the formation and transport mechanisms involved in solid-filler incorporated TFN membranes. Future studies should take advantage of this spontaneous nanochannel formation in the design of TFN to overcome the classical membrane permeability–selectivity trade-off.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/esthag-
dc.relation.ispartofEnvironmental Science & Technology-
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in Environmental Science & Technology, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acs.est.9b00473-
dc.subjectDesalination-
dc.subjectEconomic and social effects-
dc.subjectHydrophilicity-
dc.subjectHydrophobicity-
dc.subjectMetal nanoparticles-
dc.titleHydrophilic Silver Nanoparticles Induce Selective Nanochannels in Thin Film Nanocomposite Polyamide Membranes-
dc.typeArticle-
dc.identifier.emailYang, Z: zheyang8@hku.hk-
dc.identifier.emailGuo, H: guohao7@hku.hk-
dc.identifier.emailTang, CY: tangc@hku.hk-
dc.identifier.authorityTang, CY=rp01765-
dc.description.naturepostprint-
dc.identifier.doi10.1021/acs.est.9b00473-
dc.identifier.pmid30973224-
dc.identifier.scopuseid_2-s2.0-85065081385-
dc.identifier.hkuros299804-
dc.identifier.volume53-
dc.identifier.issue9-
dc.identifier.spage5301-
dc.identifier.epage5308-
dc.publisher.placeUnited States-

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