scholarly journals Dynamic double layer force between charged surfaces

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Bhavya Balu ◽  
Aditya S. Khair
Keyword(s):  
Double Layer ◽  
Charged Surfaces

scholarly journals Untangling superposed double layer and structural forces across confined nanoparticle suspensions

2021 ◽  
Author(s):  
Michael Ludwig ◽  
Regine von Klitzing
Keyword(s):  
Double Layer ◽  
Interaction Force ◽  
Charged Surfaces ◽  
Structural Forces ◽  
Nanoparticle Suspensions ◽  
Confined Suspensions ◽  
Force Profiles

Complete interaction force profiles of charged surfaces across confined suspensions were successfully described using a superposition of double layer and structural forces.

Electric double layer force between charged surfaces: Effect of solvent polarization

2013 ◽  
Vol 138 (11) ◽  
pp. 114703 ◽  
Author(s):  
Rahul Prasanna Misra ◽  
Siddhartha Das ◽  
Sushanta K. Mitra
Keyword(s):  
Double Layer ◽  
Electric Double Layer ◽  
Effect Of Solvent ◽  
Charged Surfaces ◽  
Solvent Polarization

scholarly journals Electrical Double-Layer and Ion Bridging Forces between Symmetric and Asymmetric Charged Surfaces in the Presence of Mono- and Divalent Ions

Langmuir ◽  
2017 ◽  
Vol 33 (18) ◽  
pp. 4426-4434 ◽  
Author(s):  
Xiaoyan Liu ◽  
Karen L. Feilberg ◽  
Wei Yan ◽  
Erling H. Stenby ◽  
Esben Thormann
Keyword(s):  
Double Layer ◽  
Electrical Double Layer ◽  
Divalent Ions ◽  
Charged Surfaces

Double Layer Forces between Heterogeneous Charged Surfaces

1994 ◽  
Vol 98 (36) ◽  
pp. 9022-9032 ◽  
Author(s):  
S. J. Miklavic ◽  
D. Y. C. Chan ◽  
L. R. White ◽  
T. W. Healy
Keyword(s):  
Double Layer ◽  
Charged Surfaces

Salt diffusion in charged porous media

2020 ◽  
Author(s):  
Pavan Cornelissen ◽  
Anton Leijnse ◽  
Vahid Joekar-Niasar ◽  
Sjoerd van der Zee
Keyword(s):  
Porous Media ◽  
Diffusion Coefficient ◽  
Double Layer ◽  
Effective Diffusion ◽  
Pore Network ◽  
Salt Transport ◽  
Double Layers ◽  
Diffuse Double Layer ◽  
Low Salinity ◽  
Charged Surfaces

<p>Some porous media such as clay have charged surfaces. The presence of these charged surfaces results in a complex system where water flow, salt transport, and the electric field are coupled. This system is important in many fields, such as geotechnical engineering, storage of radioactive waste in clay barriers, enhanced oil recovery, and irrigation with marginal water. The charged surfaces alter the transport properties of ions. For example, clay minerals are often negatively charged due to isomorphous substitution. Cations are therefore attracted to the mineral surface, while anions are repelled, creating a diffuse double layer around the clay particle. Cations are therefore transported preferably over anions through such charged pores. To conserve electroneutrality, a streaming potential develops to counteract diffusion by electromigration. This results in smaller effective diffusion coefficients compared to uncharged porous media. We developed a pore-network model to quantify the effect of the double layer processes on the effective diffusion coefficient. Pore-network models are a suitable tool to include the heterogeneity of pore sizes and surface charge densities seen in nature. In pore-network modeling, the geometry of the pore space is simplified, but the network properties are based on realistic statistics such as pore size distribution and connectivity. The larger scale behavior can be identified by averaging over a large number of pores. The results were strongly dependent on the salinity, as this controls the thickness of the double layers. At high salt concentrations, the diffuse double layer is thin and the differences between charged and uncharged porous media are negligible. However, at low salinity, the double layers are thick and the effective diffusion coefficient of salt was reduced by 25% in charged porous media compared to uncharged porous media, due to salt transport being slowed down to conserve electroneutrality. Hence, the presence of charged mineral surfaces can significantly alter transport rates under low salinity conditions.</p>

Adsorption at solid-liquid interfaces. I. Thermodynamics and the adsorption potential

1973 ◽  
Vol 26 (6) ◽  
pp. 1183 ◽  
Author(s):  
HJL Wright ◽  
RJ Hunter
Keyword(s):  
Double Layer ◽  
Surface Potential ◽  
Specific Adsorption ◽  
Oxide Surfaces ◽  
Liquid Interfaces ◽  
Adsorption Potential ◽  
Model Studies ◽  
Charged Surfaces ◽  
Solid Liquid ◽  
Mineral Oxide Surfaces

To facilitate model studies of the double layer at charged surfaces, an analysis is made of the thermodynamics of the dissociation phenomena which take place at mineral oxide surfaces. Two alternative equations may be used to describe the dependence of the surface potential and charge upon the concentration of potential determining ions in the solution. The two different approaches are similar to those given previously1,2 but analysis is made of the specific adsorption potential which is expressed in a form which permits it to be theoretically calculated. While specifically developed for insoluble oxides, the theory is equally applicable to other systems.

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