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BielawskiChristopher W

Bielawski, Christopher W.
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Adsorption of iron oxide nanoclusters stabilized with sulfonated copolymers on silica in concentrated NaCl and CaCl2 brine

Author(s)
Bagaria, Hitesh G.Neilson, Bethany M.Worthen, Andrew J.Xue, ZhengYoon, Ki YoulCheng, VictoriaLee, Jae HoVelagala, SindhujaHuh, ChunBryant, Steven L.Bielawski, Christopher W.Johnston, Keith P.
Issued Date
2013-05
DOI
10.1016/j.jcis.2013.01.056
URI
https://scholarworks.unist.ac.kr/handle/201301/31490
Fulltext
https://www.sciencedirect.com/science/article/pii/S0021979713000969?via%3Dihub
Citation
JOURNAL OF COLLOID AND INTERFACE SCIENCE, v.398, pp.217 - 226
Abstract
Transport of metal oxide nanoparticles in porous rock is of interest for imaging and oil recovery in subsurface reservoirs, which often contain concentrated brine. Various copolymers composed of acrylic acid and either 2-acrylamido-2-methylpropanesulfonate or styrenesulfonate were synthesized and adsorbed on iron oxide nanoclusters to provide colloidal stability and to achieve low adsorption on silica in high salinity brine composed of 8% wt. NaCl + 2% wt. CaCl2. Furthermore, the degree of adsorption of the nanoparticles on silica was controlled by modifying the acrylic acid groups in the copolymers with a series of diamines and triamines to add hydrophobicity. The adsorption on colloidal silica microparticles ranged from <1 mg/m(2) for highly charged hydrophilic surfaces on the iron oxide nanoparticles to 22 mg/m(2) for the most hydrophobic amine-modified surfaces, corresponding to monolayer coverages that ranged from 0.2% to 11.5%, respectively. The specific adsorption (mg-IO/m(2)-silica), monolayer coverage, and parameters for Langmuir isotherms were evaluated for various 10 nanoclusters as a function of the properties of the copolymers on their surfaces.
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
ISSN
0021-9797
Keyword (Author)
NanoparticleSilicaBrinePolymersLangmuir adsorption2-acrylamido-2-methylpropanesulfonateStyrenesulfonate
Keyword
WATER-SOLUBLE COPOLYMERSSATURATED POROUS-MEDIASUPERPARAMAGNETIC NANOCLUSTERSANIONIC POLYELECTROLYTESCARBOXYMETHYL CELLULOSESAND COLUMNSTRANSPORTNANOPARTICLESC-60NANOMATERIALS

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