ELECTROCHEMISTRY OF METHYLVIOLOGEN IN THE PRESENCE OF SODIUM DECYL SULFATE.

Pablo A. Quintela, Angel Kaifer

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The reductive electrochemistry of methylviologen was surveyed in the presence of sodium decyl sulfate (SdecS) at concentration levels below and above the critical micelle concentration (cmc) of this anionic surfactant. The SdecS micelles were found to increase the equilibrium constant for the conproportionation reaction as compared to the value obtained in surfactant-free solution. Absorption spectra showed that the equilibrium constant for dimerization of the cation radical is notably lowered by the micelles. In contrast to this, the dimerization of the cation radical is remarkably enhanced by the surfactant system at low micelle concentrations, i. e. , at concentrations of surfactant slightly above the cmc. The adsorption behavior of the cation radical on the electrode surface at SdecS concentrations under the cmc was also investigated.

Original languageEnglish
Pages (from-to)769-773
Number of pages5
JournalLangmuir
Volume3
Issue number5
StatePublished - Sep 1 1987

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Sodium sulfate
Critical micelle concentration
Micelles
Electrochemistry
electrochemistry
sodium sulfates
Surface-Active Agents
Cations
Surface active agents
Dimerization
Positive ions
Equilibrium constants
micelles
surfactants
Anionic surfactants
dimerization
Absorption spectra
cations
Adsorption
Electrodes

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

ELECTROCHEMISTRY OF METHYLVIOLOGEN IN THE PRESENCE OF SODIUM DECYL SULFATE. / Quintela, Pablo A.; Kaifer, Angel.

In: Langmuir, Vol. 3, No. 5, 01.09.1987, p. 769-773.

Research output: Contribution to journalArticle

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