X-ray study of the electric double layer at the n-hexane/nanocolloidal silica interface.

@article{Tikhonov2006XraySO,
  title={X-ray study of the electric double layer at the n-hexane/nanocolloidal silica interface.},
  author={Aleksey M. Tikhonov},
  journal={The Journal of chemical physics},
  year={2006},
  volume={124 16},
  pages={
          164704
        }
}
  • A. Tikhonov
  • Published 25 April 2006
  • Chemistry, Medicine, Physics
  • The Journal of chemical physics
The spatial structure of the transition region between an insulator and an electrolyte solution was studied with x-ray scattering. The electron-density profile across the n-hexane/silica sol interface (solutions with 5, 7, and 12 nm colloidal particles) agrees with the theory of the electrical double layer and shows separation of positive and negative charges. The interface consists of three layers, i.e., a compact layer of Na(+), a loose monolayer of nanocolloidal particles as part of a thick… Expand
20 Citations
Synchrotron X-Ray Reflectivity Study of the Adsorption Film of Octadecanamide at the Toluene-Water Interface
The structure of an adsorption octadecanamide film at the planar toluene-water interface is studied by X-ray reflectometry using synchrotron radiation with photon energy of 15 keV. The electronExpand
Analysis of the Silica Sol Surface Structure by X-Ray Scattering Method
Abstract The structure of the planar surface of colloidal solutions of amorphous 27-nm silica sol particles enriched with heavy K + , Rb + , and Cs + alkali ions is studied by the methods ofExpand
X-Ray Study of Thermotropic Mesophases of an Adsorbed n-Triacontanol Film at the n-Hexadecane–Water Interface
Using synchrotron radiation with a photon energy of 15 keV, the molecular structure of an adsorbed n-triacontanol layer at the n-hexadecane–water interface in its different phase states has beenExpand
Ion-size effect at the surface of a silica hydrosol.
  • A. Tikhonov
  • Chemistry, Physics
  • The Journal of chemical physics
  • 2009
TLDR
It is found that large alkali ions preferentially accumulate and replace smaller ones at the surface of the hydrosol, a result qualitatively agreeing with the dependence of the Kharkats-Ulstrup single-ion electrostatic free energy on the ion's radius. Expand
Model-Independent X-Ray Scattering Study of a Silica Sol Surface
The structure of the adsorbed layer of alkali ions on the surface of colloidal silica solutions with a particle size of 27 nm has been studied by reflectometry and diffuse scattering of synchrotronExpand
Wigner crystals of Na+ ions at the surface of a silica hydrosol.
  • A. Tikhonov
  • Chemistry, Physics
  • The Journal of chemical physics
  • 2007
TLDR
The author used x-ray grazing-incidence diffraction to measure the spatial correlations between sodium ions in "classical one-component plasma" adsorbed with Bjerrum's density at the surface of a monodispersed 22 nm particle colloidal silica solution stabilized by NaOH with a total bulk concentration approximately 0.05 mol/L. Expand
X-Ray Reflectometry of DMPS Monolayers on a Water Substrate
The molecular structure of dimyristoyl phosphatidylserine (DMPS) monolayers on a water substrate in different phase states has been investigated by X-ray reflectometry with a photon energy of ~8 keV.Expand
Solid–Liquid Phase Transition in the Octadecanoic Acid Film Adsorbed on the Toluene–Water Interface
  • A. Tikhonov
  • Materials Science, Physics
  • Journal of Experimental and Theoretical Physics
  • 2018
The structure of the soluble protonated (pH = 2) octadecanoic acid film adsorbed on the saturated hydrocarbon (n-hexane)–water and aromatic hydrocarbon (toluene)–water interfaces is studied by X-rayExpand
Vaporization and Layering of Alkanols at the Oil/water Interface
This study of adsorption of normal alkanols at the oil/water interface with x-ray reflectivity and tensiometry demonstrates that the liquid to gas monolayer phase transition at the hexane/waterExpand
On the formation of a macroscopically flat phospholipid membrane on a hydrosol substrate
The dependence of the structure of a phospholipid layer (DSPC and SOPC) adsorbed on a hydrosol substrate on the concentration of NaOH in a solution of 5-nm silica particles has been studied by X-rayExpand
...
1
2
...

References

SHOWING 1-10 OF 38 REFERENCES
Water density in the electric double layer at the insulator/electrolyte solution interface.
  • A. Tikhonov
  • Chemistry, Medicine
  • The journal of physical chemistry. B
  • 2006
TLDR
The spatial structure of the thick transition region between n-hexane and a colloidal solution of 7-nm silica particles is studied by X-ray reflectivity and grazing incidence small-angle scattering to reveal the average density of water in the field is the same as, or only few percent higher than, its density under normal conditions. Expand
Voltage-dependent ordering of water molecules at an electrode–electrolyte interface
THE arrangement of water molecules at charged, aqueous interfaces is an important question in electrochemistry, geochemistry and biology. Theoretical studies1–11 suggest that the molecules becomeExpand
Electrical double layers at the oil/water interface.
This review presents the historical development and current status of the theory of the electrical double layer at a liquid/liquid interface. It gives rigorous thermodynamic definitions of all basicExpand
In situ x-ray-diffraction and -reflectivity studies of the Au(111)/electrolyte interface: Reconstruction and anion adsorption.
TLDR
Analysis of the potential dependence of the scattered x-ray intensity with differing anions in NaF, NaCl, and NaBr solutions supports a unifying model that depends on the induced surface charge density. Expand
XL. The electrical double layer at the interface of two liquids
Summary The potential function at the interface of two liquid phases about which a small amount of electrolyte is distributed is considered. The total potential drop D, due to the circumstance thatExpand
X-ray reflectivity study of the water-hexane interface
Synchrotron X-ray reflectivity is used to study the electron density profile normal to the bulk water−hexane interface. This first measurement of the microscopic interfacial width of a neat water−oilExpand
WATER DENSITY IN THE DOUBLE LAYER
A recently proposed approach to the problem of ion hydration in solutions is extended to water at a charged metallic electrode. Water in the closest proximity of the electrode is compressed due toExpand
Thermodynamic surface excess of water and ionic solvation at the interface between immiscible liquids
Abstract The thermodynamic surface excess of water at several organic solvents-aqueous solution interfaces has been determined for different salt solutions. The coordinates of pendant drops wereExpand
Surface ordering in a concentrated suspension of colloidal particles investigated by x-ray scattering methods.
TLDR
A simple structural model for the near surface arrangement of colloidal particles in this system is proposed and three layers are identified from the scattering profile. Expand
Noncapillary-wave structure at the water-alkane interface.
TLDR
Synchrotron x-ray reflectivity is used to study the interface between bulk water and bulk n-alkanes with carbon numbers 6 through 10, 12, 16, and 22 and the variation of interfacial width with carbon number can be described by combining capillary-wave prediction for the width with a contribution from intrinsic structure. Expand
...
1
2
3
4
...