The surface interactions of a near-neutral carbon nanoparticle tracer with calcite

Handle URI:
http://hdl.handle.net/10754/623608
Title:
The surface interactions of a near-neutral carbon nanoparticle tracer with calcite
Authors:
Li, Yan Vivian; Cathles, Lawrence M.
Abstract:
A new class of nearly charge-neutral carbon-cored nanoparticle tracers are remarkably non-interactive with solid surfaces and could provide a valuable baseline for diverse hydrological and environmental studies of subsurface flow and particle transport. We investigate the causes of inertness by studying the interactions with calcite of a nanoparticle of this class synthesized from malic acid and ethanolamine (M-dots) dispersed in brine (NaCl, CaCl2, and MgCl2) solutions. None of the M-dots are retained in calcite sand-packed columns when dispersed in DI water. Dispersed in the NaCl and mixed brine solutions, 5.6 % of and 7.3 % of the M-dots are initially retained, but 65 and 13 % of these retained particles are subsequently released when the column is flushed with DI water. When dispersed in the CaCl2 and MgCl2 solutions, 65 and 54 % of the M-dots are initially retained, and 28 and 26 % subsequently released in the DI water flush. The M-dots have a small negative zeta potential in all solutions, but the calcite zeta potential changes from strongly negative to strongly positive across the solution series, and the particle retention tracks this change. Derjaguin–Landau–Verwey–Overbeek (DLVO) modeling of the force between a calcite probe and an M-dot coated surface shows that hydration forces repel the particles in the DI water, NaCl, and mixed solutions, but not in the CaCl2 and MgCl2 solutions. These results show that near-zero charge and strongly hydrophilic decoration are the causes of the remarkable inertness of carbon-cored nanoparticles, and also suggest that nanoparticles could be useful in solute-surface interaction studies.
Citation:
Li YV, Cathles LM (2016) The surface interactions of a near-neutral carbon nanoparticle tracer with calcite. Journal of Nanoparticle Research 18. Available: http://dx.doi.org/10.1007/s11051-016-3383-4.
Publisher:
Springer Nature
Journal:
Journal of Nanoparticle Research
KAUST Grant Number:
KUS-C1-018-02
Issue Date:
2-Mar-2016
DOI:
10.1007/s11051-016-3383-4
Type:
Article
ISSN:
1388-0764; 1572-896X
Sponsors:
This publication is based on work supported by Award No. KUS-C1-018-02 from the King Abdullah University of Science and Technology and by ARI project from Department of Energy. Support was also provided by a general fund contribution to L. Cathles from The International Research Institute of Stavanger.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorLi, Yan Vivianen
dc.contributor.authorCathles, Lawrence M.en
dc.date.accessioned2017-05-15T10:35:10Z-
dc.date.available2017-05-15T10:35:10Z-
dc.date.issued2016-03-02en
dc.identifier.citationLi YV, Cathles LM (2016) The surface interactions of a near-neutral carbon nanoparticle tracer with calcite. Journal of Nanoparticle Research 18. Available: http://dx.doi.org/10.1007/s11051-016-3383-4.en
dc.identifier.issn1388-0764en
dc.identifier.issn1572-896Xen
dc.identifier.doi10.1007/s11051-016-3383-4en
dc.identifier.urihttp://hdl.handle.net/10754/623608-
dc.description.abstractA new class of nearly charge-neutral carbon-cored nanoparticle tracers are remarkably non-interactive with solid surfaces and could provide a valuable baseline for diverse hydrological and environmental studies of subsurface flow and particle transport. We investigate the causes of inertness by studying the interactions with calcite of a nanoparticle of this class synthesized from malic acid and ethanolamine (M-dots) dispersed in brine (NaCl, CaCl2, and MgCl2) solutions. None of the M-dots are retained in calcite sand-packed columns when dispersed in DI water. Dispersed in the NaCl and mixed brine solutions, 5.6 % of and 7.3 % of the M-dots are initially retained, but 65 and 13 % of these retained particles are subsequently released when the column is flushed with DI water. When dispersed in the CaCl2 and MgCl2 solutions, 65 and 54 % of the M-dots are initially retained, and 28 and 26 % subsequently released in the DI water flush. The M-dots have a small negative zeta potential in all solutions, but the calcite zeta potential changes from strongly negative to strongly positive across the solution series, and the particle retention tracks this change. Derjaguin–Landau–Verwey–Overbeek (DLVO) modeling of the force between a calcite probe and an M-dot coated surface shows that hydration forces repel the particles in the DI water, NaCl, and mixed solutions, but not in the CaCl2 and MgCl2 solutions. These results show that near-zero charge and strongly hydrophilic decoration are the causes of the remarkable inertness of carbon-cored nanoparticles, and also suggest that nanoparticles could be useful in solute-surface interaction studies.en
dc.description.sponsorshipThis publication is based on work supported by Award No. KUS-C1-018-02 from the King Abdullah University of Science and Technology and by ARI project from Department of Energy. Support was also provided by a general fund contribution to L. Cathles from The International Research Institute of Stavanger.en
dc.publisherSpringer Natureen
dc.subjectNanoparticle tracersen
dc.subjectTransporten
dc.subjectMobilityen
dc.subjectHydration forceen
dc.subjectDerjaguin–Landau–Verwey–Overbeek (DLVO) theoryen
dc.subjectAtomic force microscopy (AFM)en
dc.subjectSurface scienceen
dc.titleThe surface interactions of a near-neutral carbon nanoparticle tracer with calciteen
dc.typeArticleen
dc.identifier.journalJournal of Nanoparticle Researchen
dc.contributor.institutionDepartment of Design and Merchandising, Colorado State University, Fort Collins, USAen
dc.contributor.institutionEarth and Atmospheric Sciences, Cornell University, Ithaca, USAen
kaust.grant.numberKUS-C1-018-02en
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.