Molecular-scale imaging of clay mineral surfaces with the atomic force microscope

H. Hartman; G. Sposito; A. Yang; S. Manne; S. A.C. Gould; P. K. Hansma

doi:10.1346/CCMN.1990.0380401

Molecular-scale imaging of clay mineral surfaces with the atomic force microscope

H. Hartman, G. Sposito, A. Yang, S. Manne, S. A.C. Gould, P. K. Hansma

Research output: Contribution to journal › Article › peer-review

83 Scopus citations

Abstract

Specimen samples of Crook County montmorillonite and Silver Hill illite, purified and prepared in the Na-form, were imaged under 80% relative humidity using an atomic force microscope. The direct images showed clearly the hexagonal array of hexagonal rings of oxygen ions expected for the basal planes of 2:1 phyllosilicates. Fourier transformation of the digital information obtained by the microscope scanning tip led to an estimate of 5.1 ± 0.3 Å for the nearest-neighbor separation, in agreement with the ideal nearest-neighbor spacing of 5.4 Å for hexagonal rings as derived from X-ray powder diffraction data. The atomic force microscope should prove to be a useful tool for the molecular-scale resolution of clay mineral surfaces that contain adsorbed macromolecules. -Authors

Original language	English (US)
Pages (from-to)	337-342
Number of pages	6
Journal	Clays & Clay Minerals
Volume	38
Issue number	4
DOIs	https://doi.org/10.1346/CCMN.1990.0380401
State	Published - 1990
Externally published	Yes

ASJC Scopus subject areas

Water Science and Technology
Soil Science
Geochemistry and Petrology
Earth and Planetary Sciences (miscellaneous)

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10.1346/CCMN.1990.0380401

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title = "Molecular-scale imaging of clay mineral surfaces with the atomic force microscope",

abstract = "Specimen samples of Crook County montmorillonite and Silver Hill illite, purified and prepared in the Na-form, were imaged under 80% relative humidity using an atomic force microscope. The direct images showed clearly the hexagonal array of hexagonal rings of oxygen ions expected for the basal planes of 2:1 phyllosilicates. Fourier transformation of the digital information obtained by the microscope scanning tip led to an estimate of 5.1 ± 0.3 {\AA} for the nearest-neighbor separation, in agreement with the ideal nearest-neighbor spacing of 5.4 {\AA} for hexagonal rings as derived from X-ray powder diffraction data. The atomic force microscope should prove to be a useful tool for the molecular-scale resolution of clay mineral surfaces that contain adsorbed macromolecules. -Authors",

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T1 - Molecular-scale imaging of clay mineral surfaces with the atomic force microscope

AU - Hartman, H.

AU - Sposito, G.

AU - Yang, A.

AU - Manne, S.

AU - Gould, S. A.C.

AU - Hansma, P. K.

PY - 1990

Y1 - 1990

N2 - Specimen samples of Crook County montmorillonite and Silver Hill illite, purified and prepared in the Na-form, were imaged under 80% relative humidity using an atomic force microscope. The direct images showed clearly the hexagonal array of hexagonal rings of oxygen ions expected for the basal planes of 2:1 phyllosilicates. Fourier transformation of the digital information obtained by the microscope scanning tip led to an estimate of 5.1 ± 0.3 Å for the nearest-neighbor separation, in agreement with the ideal nearest-neighbor spacing of 5.4 Å for hexagonal rings as derived from X-ray powder diffraction data. The atomic force microscope should prove to be a useful tool for the molecular-scale resolution of clay mineral surfaces that contain adsorbed macromolecules. -Authors

AB - Specimen samples of Crook County montmorillonite and Silver Hill illite, purified and prepared in the Na-form, were imaged under 80% relative humidity using an atomic force microscope. The direct images showed clearly the hexagonal array of hexagonal rings of oxygen ions expected for the basal planes of 2:1 phyllosilicates. Fourier transformation of the digital information obtained by the microscope scanning tip led to an estimate of 5.1 ± 0.3 Å for the nearest-neighbor separation, in agreement with the ideal nearest-neighbor spacing of 5.4 Å for hexagonal rings as derived from X-ray powder diffraction data. The atomic force microscope should prove to be a useful tool for the molecular-scale resolution of clay mineral surfaces that contain adsorbed macromolecules. -Authors

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Molecular-scale imaging of clay mineral surfaces with the atomic force microscope

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