
<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Song, J. E.</style></author><author><style face="normal" font="default" size="100%">Phenrat, T.</style></author><author><style face="normal" font="default" size="100%">Marinakos, S.</style></author><author><style face="normal" font="default" size="100%">Xiao, Y.</style></author><author><style face="normal" font="default" size="100%">Liu, J.</style></author><author><style face="normal" font="default" size="100%">Wiesner, M. R.</style></author><author><style face="normal" font="default" size="100%">Tilton, R. D.</style></author><author><style face="normal" font="default" size="100%">Lowry, G. V.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Hydrophobic Interactions Increase Attachment of Gum Arabic- and PVP-Coated Ag Nanoparticles to Hydrophobic Surfaces</style></title><secondary-title><style face="normal" font="default" size="100%">Environmental Science &amp; Technology</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Environ Sci Technol</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">bacterial adhesion</style></keyword><keyword><style  face="normal" font="default" size="100%">charge</style></keyword><keyword><style  face="normal" font="default" size="100%">deposition kinetics</style></keyword><keyword><style  face="normal" font="default" size="100%">packed-beds</style></keyword><keyword><style  face="normal" font="default" size="100%">particles</style></keyword><keyword><style  face="normal" font="default" size="100%">polyelectrolyte</style></keyword><keyword><style  face="normal" font="default" size="100%">POROUS-MEDIA</style></keyword><keyword><style  face="normal" font="default" size="100%">stabilization</style></keyword><keyword><style  face="normal" font="default" size="100%">transport</style></keyword><keyword><style  face="normal" font="default" size="100%">WATER</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jul 15</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">&lt;Go to ISI&gt;://000292850200012</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">14</style></number><volume><style face="normal" font="default" size="100%">45</style></volume><pages><style face="normal" font="default" size="100%">5988-5995</style></pages><isbn><style face="normal" font="default" size="100%">0013-936X</style></isbn><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">A fundamental understanding of attachment of surface-coated nanoparticles (NPs) is essential to predict the distribution and potential risks of NPs in the environment. Column deposition studies were used to examine the effect of surface-coating hydrophobicity on NP attachment to collector surfaces in mixtures with varying ratios of octadecylichlorosilane (OTS)-coated (hydrophobic) glass beads and clean silica (hydrophilic) glass beads. Silver nanoparticles (AgNPs) coated with organic coatings of varying hydrophobicity, including citrate, polyvinylpyrrolidone (PVP), and gum arabic (GA), were used. The attachment efficiencies of GA and PVP AgNPs increased by 2- and 4-fold, respectively, for OTS-coated glass beads compared to clean glass beads. Citrate AgNPs showed no substantial change in attachment efficiency for hydrophobic compared to hydrophilic surfaces. The attachment efficiency of. PVP, GA-, and citrate-coated AgNPs to hydrophobic collector surfaces correlated with the relative hydrophobicity of the coatings. The differences in the Observed attachment efficiencies among AgNPs could not be explained by classical DLVO, suggesting that hydrophobic interactions between AgNPs and OTS-coated glass beads were responsible for the increase in attachment of surface-coated AgNPs with greater hydrophobicity. This study indicates that the overall attachment efficiency of AgNPs will be influenced by the hydrophobicity of the NP coating and the fraction of hydrophobic surfaces in the environment.</style></abstract><accession-num><style face="normal" font="default" size="100%">ISI:000292850200012</style></accession-num><notes><style face="normal" font="default" size="100%">793UUTimes Cited:1Cited References Count:42</style></notes><auth-address><style face="normal" font="default" size="100%">Lowry, GVCarnegie Mellon Univ, Ctr Environm Implicat Nanotechnol CEINT, Pittsburgh, PA 15213 USACarnegie Mellon Univ, Ctr Environm Implicat Nanotechnol CEINT, Pittsburgh, PA 15213 USACarnegie Mellon Univ, Ctr Environm Implicat Nanotechnol CEINT, Pittsburgh, PA 15213 USACarnegie Mellon Univ, Dept Civil &amp; Environm Engn, Pittsburgh, PA 15213 USACarnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USACarnegie Mellon Univ, Dept Biomed Engn, Pittsburgh, PA 15213 USANaresuan Univ, Dept Civil Engn, Phitsanulok, ThailandDuke Univ, Dept Chem, Durham, NC 27708 USADuke Univ, Dept Civil &amp; Environm Engn, Durham, NC 27708 USA</style></auth-address><label><style face="normal" font="default" size="100%">1</style></label></record></records></xml>