Surface Functionalization of Thin-Film Composite Membranes with Copper Nanoparticles for Antimicrobial Surface Properties

Handle URI:
http://hdl.handle.net/10754/599810
Title:
Surface Functionalization of Thin-Film Composite Membranes with Copper Nanoparticles for Antimicrobial Surface Properties
Authors:
Ben-Sasson, Moshe; Zodrow, Katherine R.; Genggeng, Qi; Kang, Yan; Giannelis, Emmanuel P.; Elimelech, Menachem
Abstract:
Biofouling is a major operational challenge in reverse osmosis (RO) desalination, motivating a search for improved biofouling control strategies. Copper, long known for its antibacterial activity and relatively low cost, is an attractive potential biocidal agent. In this paper, we present a method for loading copper nanoparticles (Cu-NPs) on the surface of a thin-film composite (TFC) polyamide RO membrane. Cu-NPs were synthesized using polyethyleneimine (PEI) as a capping agent, resulting in particles with an average radius of 34 nm and a copper content between 39 and 49 wt.%. The positive charge of the Cu-NPs imparted by the PEI allowed a simple electrostatic functionalization of the negatively charged RO membrane. We confirmed functionalization and irreversible binding of the Cu-NPs to the membrane surface with SEM and XPS after exposing the membrane to bath sonication. We also demonstrated that Cu-NP functionalization can be repeated after the Cu-NPs dissolve from the membrane surface. The Cu-NP functionalization had minimal impact on the intrinsic membrane transport parameters. Surface hydrophilicity and surface roughness were also maintained, and the membrane surface charge became positive after functionalization. The functionalized membrane exhibited significant antibacterial activity, leading to an 80-95% reduction in the number of attached live bacteria for three different model bacterial strains. Challenges associated with this functionalization method and its implementation in RO desalination are discussed. © 2013 American Chemical Society.
Citation:
Ben-Sasson M, Zodrow KR, Genggeng Q, Kang Y, Giannelis EP, et al. (2014) Surface Functionalization of Thin-Film Composite Membranes with Copper Nanoparticles for Antimicrobial Surface Properties. Environ Sci Technol 48: 384–393. Available: http://dx.doi.org/10.1021/es404232s.
Publisher:
American Chemical Society (ACS)
Journal:
Environmental Science & Technology
Issue Date:
7-Jan-2014
DOI:
10.1021/es404232s
PubMed ID:
24308843
Type:
Article
ISSN:
0013-936X; 1520-5851
Sponsors:
This publication is based on work supported by Award No. KUS-C1-018-02, granted by King Abdullah University of Science and Technology (KAUST). This research was also supported by BARD, the United States Israel Binational Agricultural Research and Development Fund, Vaadia-BARD Postdoctoral Fellowship to M.B.-S. (Award No. FI 452-011). This material is also based on work supported by the National Science Foundation Graduate Research fellowship under Grant No. DGE-1122492 awarded to K.R.Z. Any opinion, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorBen-Sasson, Mosheen
dc.contributor.authorZodrow, Katherine R.en
dc.contributor.authorGenggeng, Qien
dc.contributor.authorKang, Yanen
dc.contributor.authorGiannelis, Emmanuel P.en
dc.contributor.authorElimelech, Menachemen
dc.date.accessioned2016-02-28T06:10:20Zen
dc.date.available2016-02-28T06:10:20Zen
dc.date.issued2014-01-07en
dc.identifier.citationBen-Sasson M, Zodrow KR, Genggeng Q, Kang Y, Giannelis EP, et al. (2014) Surface Functionalization of Thin-Film Composite Membranes with Copper Nanoparticles for Antimicrobial Surface Properties. Environ Sci Technol 48: 384–393. Available: http://dx.doi.org/10.1021/es404232s.en
dc.identifier.issn0013-936Xen
dc.identifier.issn1520-5851en
dc.identifier.pmid24308843en
dc.identifier.doi10.1021/es404232sen
dc.identifier.urihttp://hdl.handle.net/10754/599810en
dc.description.abstractBiofouling is a major operational challenge in reverse osmosis (RO) desalination, motivating a search for improved biofouling control strategies. Copper, long known for its antibacterial activity and relatively low cost, is an attractive potential biocidal agent. In this paper, we present a method for loading copper nanoparticles (Cu-NPs) on the surface of a thin-film composite (TFC) polyamide RO membrane. Cu-NPs were synthesized using polyethyleneimine (PEI) as a capping agent, resulting in particles with an average radius of 34 nm and a copper content between 39 and 49 wt.%. The positive charge of the Cu-NPs imparted by the PEI allowed a simple electrostatic functionalization of the negatively charged RO membrane. We confirmed functionalization and irreversible binding of the Cu-NPs to the membrane surface with SEM and XPS after exposing the membrane to bath sonication. We also demonstrated that Cu-NP functionalization can be repeated after the Cu-NPs dissolve from the membrane surface. The Cu-NP functionalization had minimal impact on the intrinsic membrane transport parameters. Surface hydrophilicity and surface roughness were also maintained, and the membrane surface charge became positive after functionalization. The functionalized membrane exhibited significant antibacterial activity, leading to an 80-95% reduction in the number of attached live bacteria for three different model bacterial strains. Challenges associated with this functionalization method and its implementation in RO desalination are discussed. © 2013 American Chemical Society.en
dc.description.sponsorshipThis publication is based on work supported by Award No. KUS-C1-018-02, granted by King Abdullah University of Science and Technology (KAUST). This research was also supported by BARD, the United States Israel Binational Agricultural Research and Development Fund, Vaadia-BARD Postdoctoral Fellowship to M.B.-S. (Award No. FI 452-011). This material is also based on work supported by the National Science Foundation Graduate Research fellowship under Grant No. DGE-1122492 awarded to K.R.Z. Any opinion, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleSurface Functionalization of Thin-Film Composite Membranes with Copper Nanoparticles for Antimicrobial Surface Propertiesen
dc.typeArticleen
dc.identifier.journalEnvironmental Science & Technologyen
dc.contributor.institutionYale University, New Haven, United Statesen
dc.contributor.institutionCornell University, Ithaca, United Statesen
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.