Diffusiophoresisin Suspensions of Charged PorousParticles.
Saved in:
| Title: | Diffusiophoresisin Suspensions of Charged PorousParticles. |
|---|---|
| Authors: | Huang, Hsin Y.1, Keh, Huan J.1 |
| Source: | Journal of Physical Chemistry B. Feb2015, Vol. 119 Issue 5, p2040-2050. 11p. |
| Subjects: | Suspensions (Chemistry), Porous materials, Electric double layer, Electric potential, Polyelectrolytes, Differential equations |
| Abstract: | An analysis of the diffusiophoreticmotion in a suspension of chargedporous spheres in an electrolytic solution with a macroscopic concentrationgradient is presented. Each porous particle can be a solvent-permeableand ion-penetrable charged floc or polyelectrolyte molecule, in whichthe densities of the fixed charges and frictional segments are constant,surrounded by an arbitrary electric double layer. The multiparticleinteraction effects are considered through the use of a unit cellmodel, which allows the overlap of adjacent double layers. The differentialequations governing the electric potential, ionic concentration, andfluid velocity distributions inside and outside the porous particlein a unit cell are linearized by assuming that the system is onlyslightly deviated from equilibrium and then solved as power expansionsin its dimensionless fixed-charge density. A closed-form expressionfor the diffusiophoretic velocity of the porous particle correct tothe second order of the fixed charge density is obtained from a balancebetween the electrostatic and hydrodynamic forces acting on it. Detailedcomparisons of the results for the multiparticle diffusiophoresisobtained from the cell model with various boundary conditions aremade. The effect of particle interactions on the diffusiophoresis,which is a linear combination of electrophoresis and chemiphoresis,can be significant and complicated in typical situations. Althoughthe electrophoretic mobility of the particles decreases with an increasein the particle volume fraction, their chemiphoretic mobility is notnecessarily a monotonic function of it. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 100819332 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Diffusiophoresisin Suspensions of Charged PorousParticles. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Huang%2C+Hsin+Y%2E%22">Huang, Hsin Y.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Keh%2C+Huan+J%2E%22">Keh, Huan J.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Physical+Chemistry+B%22">Journal of Physical Chemistry B</searchLink>. Feb2015, Vol. 119 Issue 5, p2040-2050. 11p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Suspensions+%28Chemistry%29%22">Suspensions (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Porous+materials%22">Porous materials</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+double+layer%22">Electric double layer</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+potential%22">Electric potential</searchLink><br /><searchLink fieldCode="DE" term="%22Polyelectrolytes%22">Polyelectrolytes</searchLink><br /><searchLink fieldCode="DE" term="%22Differential+equations%22">Differential equations</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: An analysis of the diffusiophoreticmotion in a suspension of chargedporous spheres in an electrolytic solution with a macroscopic concentrationgradient is presented. Each porous particle can be a solvent-permeableand ion-penetrable charged floc or polyelectrolyte molecule, in whichthe densities of the fixed charges and frictional segments are constant,surrounded by an arbitrary electric double layer. The multiparticleinteraction effects are considered through the use of a unit cellmodel, which allows the overlap of adjacent double layers. The differentialequations governing the electric potential, ionic concentration, andfluid velocity distributions inside and outside the porous particlein a unit cell are linearized by assuming that the system is onlyslightly deviated from equilibrium and then solved as power expansionsin its dimensionless fixed-charge density. A closed-form expressionfor the diffusiophoretic velocity of the porous particle correct tothe second order of the fixed charge density is obtained from a balancebetween the electrostatic and hydrodynamic forces acting on it. Detailedcomparisons of the results for the multiparticle diffusiophoresisobtained from the cell model with various boundary conditions aremade. The effect of particle interactions on the diffusiophoresis,which is a linear combination of electrophoresis and chemiphoresis,can be significant and complicated in typical situations. Althoughthe electrophoretic mobility of the particles decreases with an increasein the particle volume fraction, their chemiphoretic mobility is notnecessarily a monotonic function of it. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Physical Chemistry B is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=100819332 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1021/jp510448x Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 2040 Subjects: – SubjectFull: Suspensions (Chemistry) Type: general – SubjectFull: Porous materials Type: general – SubjectFull: Electric double layer Type: general – SubjectFull: Electric potential Type: general – SubjectFull: Polyelectrolytes Type: general – SubjectFull: Differential equations Type: general Titles: – TitleFull: Diffusiophoresisin Suspensions of Charged PorousParticles. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Huang, Hsin Y. – PersonEntity: Name: NameFull: Keh, Huan J. IsPartOfRelationships: – BibEntity: Dates: – D: 05 M: 02 Text: Feb2015 Type: published Y: 2015 Identifiers: – Type: issn-print Value: 15206106 Numbering: – Type: volume Value: 119 – Type: issue Value: 5 Titles: – TitleFull: Journal of Physical Chemistry B Type: main |
| ResultId | 1 |
