Electrokinetics at high ionic strengths: Alumina

Marek Kosmulski; Per Dahlsten; Piotr Próchniak; Jarl B. Rosenholm

doi:10.1016/j.colsurfa.2007.01.015

Electrokinetics at high ionic strengths: Alumina

Marek Kosmulski, Per Dahlsten, Piotr Próchniak, Jarl B. Rosenholm

Laboratory of Molecular Science and Engineering

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

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Abstract

Electrophoresis was used to study ζ potentials of α-alumina in the presence of the following electrolytes: LiI, LiNO3, NaCl, NaBr, NaNO3, KCl, KNO3, CsCl, at concentrations up to 2 M. Unexpectedly high values of the ζ potentials (up to 20 mV) were found at pH 4 in 1 M solutions of these electrolytes. The results obtained at pH > 9 in the presence of 1 and 2 M solutions of lithium salts suggest a shift in the IEP to high pH, which is analogous to a shift observed by means of electroacoustic method. © 2007 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	425-431
Number of pages	7
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	301
Issue number	1-3
DOIs	https://doi.org/10.1016/j.colsurfa.2007.01.015
Publication status	Published - May 2007
MoE publication type	A1 Journal article-refereed

Keywords

Common intersection point
Isoelectric point
Point of zero charge
Zeta potential

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10.1016/j.colsurfa.2007.01.015

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title = "Electrokinetics at high ionic strengths: Alumina",

abstract = "Electrophoresis was used to study ζ potentials of α-alumina in the presence of the following electrolytes: LiI, LiNO3, NaCl, NaBr, NaNO3, KCl, KNO3, CsCl, at concentrations up to 2 M. Unexpectedly high values of the ζ potentials (up to 20 mV) were found at pH 4 in 1 M solutions of these electrolytes. The results obtained at pH > 9 in the presence of 1 and 2 M solutions of lithium salts suggest a shift in the IEP to high pH, which is analogous to a shift observed by means of electroacoustic method. {\textcopyright} 2007 Elsevier B.V. All rights reserved.",

keywords = "Common intersection point, Isoelectric point, Point of zero charge, Zeta potential",

author = "Marek Kosmulski and Per Dahlsten and Piotr Pr{\'o}chniak and Rosenholm, {Jarl B.}",

year = "2007",

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TY - JOUR

T1 - Electrokinetics at high ionic strengths: Alumina

AU - Kosmulski, Marek

AU - Dahlsten, Per

AU - Próchniak, Piotr

AU - Rosenholm, Jarl B.

PY - 2007/5

Y1 - 2007/5

N2 - Electrophoresis was used to study ζ potentials of α-alumina in the presence of the following electrolytes: LiI, LiNO3, NaCl, NaBr, NaNO3, KCl, KNO3, CsCl, at concentrations up to 2 M. Unexpectedly high values of the ζ potentials (up to 20 mV) were found at pH 4 in 1 M solutions of these electrolytes. The results obtained at pH > 9 in the presence of 1 and 2 M solutions of lithium salts suggest a shift in the IEP to high pH, which is analogous to a shift observed by means of electroacoustic method. © 2007 Elsevier B.V. All rights reserved.

AB - Electrophoresis was used to study ζ potentials of α-alumina in the presence of the following electrolytes: LiI, LiNO3, NaCl, NaBr, NaNO3, KCl, KNO3, CsCl, at concentrations up to 2 M. Unexpectedly high values of the ζ potentials (up to 20 mV) were found at pH 4 in 1 M solutions of these electrolytes. The results obtained at pH > 9 in the presence of 1 and 2 M solutions of lithium salts suggest a shift in the IEP to high pH, which is analogous to a shift observed by means of electroacoustic method. © 2007 Elsevier B.V. All rights reserved.

KW - Common intersection point

KW - Isoelectric point

KW - Point of zero charge

KW - Zeta potential

UR - https://www.mendeley.com/catalogue/6e60f03b-e2eb-3e4a-887f-a37e3b179b30/

U2 - 10.1016/j.colsurfa.2007.01.015

DO - 10.1016/j.colsurfa.2007.01.015

M3 - Article

SN - 0927-7757

VL - 301

SP - 425

EP - 431

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

IS - 1-3

ER -

Electrokinetics at high ionic strengths: Alumina

Abstract

Keywords

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