Electrokinetic potential of multilayer carbon nanotubes in aqueous solutions of electrolytes and surfactants

S. Bárány, N. Kartel’, R. Meszaros

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The effect of electrolytes with single-, double- and triple-charged counterions, as well as cationic (cetyltrimethylammonium bromide) and anionic (sodium dodecyl sulfate) surfactants, on the electrokinetic potential of multiwall carbon nanotubes prepared via catalytic pyrolysis of propylene in a gas phase according to the CCVD technology has been studied. It has been shown that the influence of different electrolytes on the electrophoretic mobility of the nanotubes does not differ essentially from their effect on the behavior of well-studied inorganic dispersed particles; i.e., the dependence of the absolute values of the ζ-potential on the concentration of a 1: 1 electrolyte passes through a maximum and the introduction of double-charged counterions dramatically reduces the ζ-potential, while the addition of triple-charged cations and a cationic surfactant causes charge reversal of the nanotube surface. The adsorption of sodium dodecyl sulfate in a neutral medium increases the negative ζ values; this effect evens out in the presence of an alkali due to a rise in the electrostatic repulsion between surfactant anions and nanotube surface, which bears a high negative charge resulting from the dissociation of surface functional groups.

Original languageEnglish
Pages (from-to)509-513
Number of pages5
JournalColloid Journal
Volume76
Issue number5
DOIs
Publication statusPublished - 2014

Fingerprint

Carbon Nanotubes
electrokinetics
Surface-Active Agents
Nanotubes
Electrolytes
Carbon nanotubes
nanotubes
Multilayers
Surface active agents
carbon nanotubes
surfactants
Sodium dodecyl sulfate
electrolytes
aqueous solutions
sodium sulfates
Sodium Dodecyl Sulfate
Electrophoretic mobility
Cationic surfactants
Alkalies
bears

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry
  • Surfaces and Interfaces

Cite this

Electrokinetic potential of multilayer carbon nanotubes in aqueous solutions of electrolytes and surfactants. / Bárány, S.; Kartel’, N.; Meszaros, R.

In: Colloid Journal, Vol. 76, No. 5, 2014, p. 509-513.

Research output: Contribution to journalArticle

@article{84e2054654c5496ca9942c61276c9e1a,
title = "Electrokinetic potential of multilayer carbon nanotubes in aqueous solutions of electrolytes and surfactants",
abstract = "The effect of electrolytes with single-, double- and triple-charged counterions, as well as cationic (cetyltrimethylammonium bromide) and anionic (sodium dodecyl sulfate) surfactants, on the electrokinetic potential of multiwall carbon nanotubes prepared via catalytic pyrolysis of propylene in a gas phase according to the CCVD technology has been studied. It has been shown that the influence of different electrolytes on the electrophoretic mobility of the nanotubes does not differ essentially from their effect on the behavior of well-studied inorganic dispersed particles; i.e., the dependence of the absolute values of the ζ-potential on the concentration of a 1: 1 electrolyte passes through a maximum and the introduction of double-charged counterions dramatically reduces the ζ-potential, while the addition of triple-charged cations and a cationic surfactant causes charge reversal of the nanotube surface. The adsorption of sodium dodecyl sulfate in a neutral medium increases the negative ζ values; this effect evens out in the presence of an alkali due to a rise in the electrostatic repulsion between surfactant anions and nanotube surface, which bears a high negative charge resulting from the dissociation of surface functional groups.",
author = "S. B{\'a}r{\'a}ny and N. Kartel’ and R. Meszaros",
year = "2014",
doi = "10.1134/S1061933X14050020",
language = "English",
volume = "76",
pages = "509--513",
journal = "Colloid Journal of the Russian Academy of Sciences: Kolloidnyi Zhurnal",
issn = "1061-933X",
publisher = "Maik Nauka-Interperiodica Publishing",
number = "5",

}

TY - JOUR

T1 - Electrokinetic potential of multilayer carbon nanotubes in aqueous solutions of electrolytes and surfactants

AU - Bárány, S.

AU - Kartel’, N.

AU - Meszaros, R.

PY - 2014

Y1 - 2014

N2 - The effect of electrolytes with single-, double- and triple-charged counterions, as well as cationic (cetyltrimethylammonium bromide) and anionic (sodium dodecyl sulfate) surfactants, on the electrokinetic potential of multiwall carbon nanotubes prepared via catalytic pyrolysis of propylene in a gas phase according to the CCVD technology has been studied. It has been shown that the influence of different electrolytes on the electrophoretic mobility of the nanotubes does not differ essentially from their effect on the behavior of well-studied inorganic dispersed particles; i.e., the dependence of the absolute values of the ζ-potential on the concentration of a 1: 1 electrolyte passes through a maximum and the introduction of double-charged counterions dramatically reduces the ζ-potential, while the addition of triple-charged cations and a cationic surfactant causes charge reversal of the nanotube surface. The adsorption of sodium dodecyl sulfate in a neutral medium increases the negative ζ values; this effect evens out in the presence of an alkali due to a rise in the electrostatic repulsion between surfactant anions and nanotube surface, which bears a high negative charge resulting from the dissociation of surface functional groups.

AB - The effect of electrolytes with single-, double- and triple-charged counterions, as well as cationic (cetyltrimethylammonium bromide) and anionic (sodium dodecyl sulfate) surfactants, on the electrokinetic potential of multiwall carbon nanotubes prepared via catalytic pyrolysis of propylene in a gas phase according to the CCVD technology has been studied. It has been shown that the influence of different electrolytes on the electrophoretic mobility of the nanotubes does not differ essentially from their effect on the behavior of well-studied inorganic dispersed particles; i.e., the dependence of the absolute values of the ζ-potential on the concentration of a 1: 1 electrolyte passes through a maximum and the introduction of double-charged counterions dramatically reduces the ζ-potential, while the addition of triple-charged cations and a cationic surfactant causes charge reversal of the nanotube surface. The adsorption of sodium dodecyl sulfate in a neutral medium increases the negative ζ values; this effect evens out in the presence of an alkali due to a rise in the electrostatic repulsion between surfactant anions and nanotube surface, which bears a high negative charge resulting from the dissociation of surface functional groups.

UR - http://www.scopus.com/inward/record.url?scp=84919883836&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84919883836&partnerID=8YFLogxK

U2 - 10.1134/S1061933X14050020

DO - 10.1134/S1061933X14050020

M3 - Article

VL - 76

SP - 509

EP - 513

JO - Colloid Journal of the Russian Academy of Sciences: Kolloidnyi Zhurnal

JF - Colloid Journal of the Russian Academy of Sciences: Kolloidnyi Zhurnal

SN - 1061-933X

IS - 5

ER -