Hydrated Cation Speciation at the Muscovite (001)−Water Interface
Abstract
Charged materials in aqueous systems interact according to their interfacial properties, typically described by the electrical double layer (EDL). Distributions of divalent metal cations at the muscovite (001)-solution interface observed using resonant anomalous X-ray reflectivity demonstrate an unexpected complexity with respect to the EDL structure. Three forms of adsorbed cations can coexist: the classical inner-sphere and outer-sphere complexes and a third "extended" outer-sphere complex located farther from the surface. Their relative proportions are controlled by the energy balance among cation hydration, interface hydration, and electrostatic attraction. Systematic trends in coverage and position establish the defining role of cation hydration in stabilizing the multiple coexisting species.
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Lee et al. found three forms of sorbed cations: classical outer-sphere, inner-sphere, and extended outer-sphere located above the surface hydration layer or maintaining intact higher-order hydration shell.
“Recently, Lee et al. [4], by using in situ resonant anomalous X-ray reflectivity, found three forms of sorbed cations: the classical outer-sphere and inner-sphere complexes and an B extended ^ outer-sphere complex located above the surface hydration layer or maintaining intact higherorder hydration shell (Fig. 1).”
From Chemical Processes Affecting the Mobility of Heavy Metals and Metalloids in Soil Environments (2016) · cites this paper as [4]
For less strongly hydrated cations, the presence of fulvic acid increased metal sorption in the order Ba ≈ Sr < Pb < Hg, in order of increasing cation affinity for FA.
“For less strongly hydrated cations, the presence of FA increased metal sorption in the order Ba ≈ Sr<Pb<Hg, in order of increasing cation affinity for FA.”
From Chemical Processes Affecting the Mobility of Heavy Metals and Metalloids in Soil Environments (2016) · cites this paper as [4]
The binding of strongly hydrated metals, such as Cu and Zn, onto the surfaces of muscovite was not altered by FA.
“Finally, the binding of strongly hydrated metals, such as Cu and Zn, onto the surfaces of muscovite was not altered by FA.”
From Chemical Processes Affecting the Mobility of Heavy Metals and Metalloids in Soil Environments (2016) · cites this paper as [4]
Cites
Park, C., Fenter, P. A., Sturchio, N. C., & Nagy, K. L. (2008) · Langmuir · doi:10.1021/la802446m · Cited by 62 · see citing works
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Chemical Processes Affecting the Mobility of Heavy Metals and Metalloids in Soil Environments
Caporale, A. G., & Violante, A. (2016) · Current Pollution Reports · doi:10.1007/s40726-015-0024-y · Cited by 369 · see citing works
Lee, S. S., Fenter, P., Nagy, K. L., & Sturchio, N. C. (2012) · Langmuir · doi:10.1021/la300032h · Cited by 145 · see citing works
Self-citationStructure of Polyelectrolyte Brushes in the Presence of Multivalent Counterions
Yu, J., Mao, J., Yuan, G., Satija, S., Jiang, Z., Chen, W., & Tirrell, M. (2016) · Macromolecules · doi:10.1021/acs.macromol.6b01064 · Cited by 115 · see citing works
Hydrated-ion ordering in electrical double layers
Espinosa-Marzal, R. M., Drobek, T., Balmer, T., & Heuberger, M. P. (2012) · Physical Chemistry Chemical Physics · doi:10.1039/c2cp40255f · Cited by 88 · see citing works
Elucidating Mechanisms of Competitive Sorption at the Mineral/Water Interface
Violante, A. (2013) · Advances in Agronomy · doi:10.1016/b978-0-12-405942-9.00003-7 · Cited by 80 · see citing works
- Authors
- Lee, S. S., Fenter, P., Park, C., Sturchio, N. C., & Nagy, K. L.
- Affiliations
- Argonne National Laboratory (US)
- University of Illinois Chicago (US)
- Corresponding author
- Lee, Sang Soo
- Venue
- Langmuir
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-10-08
- Volume
- 26
- Issue
- 22
- Pages
- 16647-16651
- ISSN
- 0743-7463 (ISSN-L)
- 1520-5827
- OpenAlex
- W2033251150
- Cited by
- 147
- References
- 1
- Citations by year
- 2026: 6 · 2025: 2 · 2024: 11 · 2023: 7 · 2022: 9 · 2021: 10 · 2020: 4 · 2019: 11 · 2018: 11 · 2017: 12 · 2016: 13 · 2015: 11 · 2014: 7 · 2013: 11 · 2012: 12
- FWCI
- 7.01
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Langmuir (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Chemistry › Physical and Theoretical Chemistry › Electrostatics and Colloid Interactions
- Physical Sciences › Materials Science › Biomaterials › Clay minerals and soil interactions
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Biophysics › Chemical and Physical Studies
- Keywords
- muscovite, clay-water interface, electric double layer, divalent cation adsorption, cation hydration, inner-sphere complexes, outer-sphere complexes, electrostatic attraction
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