dc.contributor.authorLoo, Siew-Leng
dc.contributor.authorKrantz, William B.
dc.contributor.authorHu, Xiao
dc.contributor.authorFane, Anthony Gordon
dc.contributor.authorLim, Teik-Thye
dc.identifier.citationLoo, S.-L., Krantz, W. B., Hu, X., Fane, A. G., & Lim, T.-T. (2016). Impact of solution chemistry on the properties and bactericidal activity of silver nanoparticles decorated on superabsorbent cryogels. Journal of Colloid and Interface Science, 461, 104-113.en_US
dc.description.abstractThis study investigated the effects of dissolved organic matter (DOM) and various electrolytes commonly found in environmental aqueous matrices on the physicochemical properties and bactericidal efficacy of silver nanoparticles (AgNPs), which are immobilized on cryogels (or PSA/AgNP cryogel). The AgNPs in the PSA/AgNP cryogel that were exposed to different media underwent morphological transformation in terms of particle size and structure. In addition, the presence of DOM and electrolytes increased the release of dissolved Ag. The biological uptake of Ag species (determined as the total Ag in exposed cells) increased in the presence of DOM, but decreased in the presence of electrolytes. The presence of electrolytes did not result in any significant reduction in the bactericidal activity. Although an initial increase of the DOM to 2.5 mg-C L−1 attenuated the bactericidal efficacy of the immobilized AgNPs, an increase in the DOM concentration beyond 5 mg-C L−1 enhanced the bactericidal efficacy. This study found that the bactericidal activity of the immobilized AgNPs is less sensitive to the solution chemistry relative to the free AgNPs. This suggests that immobilizing the AgNPs in a supporting material is a good strategy to preserve their efficacy for disinfection in various aqueous matrices.en_US
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en_US
dc.description.sponsorshipEDB (Economic Devt. Board, S’pore)en_US
dc.format.extent32 p.en_US
dc.relation.ispartofseriesJournal of Colloid and Interface Scienceen_US
dc.rights© 2015 Elsevier Inc. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Colloid and Interface Science, Elsevier Inc. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.jcis.2015.09.007].en_US
dc.subjectEnvironmental matrixen_US
dc.subjectE. colien_US
dc.titleImpact of solution chemistry on the properties and bactericidal activity of silver nanoparticles decorated on superabsorbent cryogelsen_US
dc.typeJournal Article
dc.contributor.researchNanyang Environment and Water Research Instituteen_US
dc.contributor.researchSingapore Membrane Technology Centreen_US
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.description.versionAccepted versionen_US

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