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dc.contributor.advisor Wiesner, Mark R en_US
dc.contributor.author Lin, S
dc.contributor.author Cheng, Y
dc.contributor.author Bobcombe, Y
dc.contributor.author L Jones, K
dc.contributor.author Liu, J
dc.contributor.author Wiesner, MR
dc.coverage.spatial United States
dc.date.accessioned 2011-05-20T19:13:06Z
dc.date.issued 2011-06-15
dc.identifier http://www.ncbi.nlm.nih.gov/pubmed/21591608
dc.identifier.citation Environ Sci Technol, 2011, 45 (12), pp. 5209 - 5215
dc.identifier.uri http://hdl.handle.net/10161/3775
dc.description Thesis en_US
dc.description.abstract The transport of uncoated silver nanoparticles (AgNPs) in a porous medium composed of silica glass beads modified with a partial coverage of iron oxide (hematite) was studied and compared to that in a porous medium composed of unmodified glass beads (GB). At a pH lower than the point of zero charge (PZC) of hematite, the affinity of AgNPs for a hematite-coated glass bead (FeO-GB) surface was significantly higher than that for an uncoated surface. There was a linear correlation between the average nanoparticle affinity for media composed of mixtures of FeO-GB and GB collectors and the relative composition of those media as quantified by the attachment efficiency over a range of mixing mass ratios of the two types of collectors, so that the average AgNPs affinity for these media is readily predicted from the mass (or surface) weighted average of affinities for each of the surface types. X-ray photoelectron spectroscopy (XPS) was used to quantify the composition of the collector surface as a basis for predicting the affinity between the nanoparticles for a heterogeneous collector surface. A correlation was also observed between the local abundances of AgNPs and FeO on the collector surface.
dc.format.extent 5209 - 5215
dc.language ENG
dc.relation.ispartof Environ Sci Technol
dc.relation.isversionof 10.1021/es2002327
dc.subject Geological Phenomena
dc.subject Hydrodynamics
dc.subject Hydrogen-Ion Concentration
dc.subject Iron
dc.subject Metal Nanoparticles
dc.subject Photoelectron Spectroscopy
dc.subject Porosity
dc.subject Silver
dc.subject Sodium Hydroxide
dc.subject Surface Properties
dc.title Deposition of silver nanoparticles in geochemically heterogeneous porous media: predicting affinity from surface composition analysis.
dc.type Journal Article
dc.department Civil and Environmental Engineering en_US
duke.embargo.months 12 en_US
pubs.author-url http://www.ncbi.nlm.nih.gov/pubmed/21591608
pubs.issue 12
pubs.organisational-group /Duke
pubs.organisational-group /Duke/Institutes and Provost's Academic Units
pubs.organisational-group /Duke/Institutes and Provost's Academic Units/Initiatives
pubs.organisational-group /Duke/Institutes and Provost's Academic Units/Initiatives/Duke Science & Society
pubs.organisational-group /Duke/Institutes and Provost's Academic Units/Initiatives/Energy Initiative
pubs.organisational-group /Duke/Nicholas School of the Environment
pubs.organisational-group /Duke/Nicholas School of the Environment/Earth and Ocean Sciences
pubs.organisational-group /Duke/Nicholas School of the Environment/Environmental Sciences and Policy
pubs.organisational-group /Duke/Pratt School of Engineering
pubs.organisational-group /Duke/Pratt School of Engineering/Civil and Environmental Engineering
pubs.organisational-group /Duke/Trinity College of Arts & Sciences
pubs.organisational-group /Duke/Trinity College of Arts & Sciences/Chemistry
pubs.publication-status Published
pubs.volume 45
dc.identifier.eissn 1520-5851

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