Ac voltammetric and impedance studies of the electrochemical oxidation of pyrrole in aqueous medium

Kwok Keung SHIU; Yingzhou Zhang; Kwok Yin Wong

doi:10.1016/0022-0728(94)03838-T

Ac voltammetric and impedance studies of the electrochemical oxidation of pyrrole in aqueous medium

Kwok Keung SHIU^*, Yingzhou Zhang, Kwok Yin Wong

^*Corresponding author for this work

Department of Chemistry

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

6 Citations (Scopus)

Abstract

The electropolymerization of pyrrole on platinum electrodes has been studied by ac voltammetric and impedance techniques. Anionic species such as chloride, bathophenanthroline disulfonate and ferricyanide, when present in solution during polymerization, adsorbed on the electrode surfaces and increased the rate of the electropolymerization process. The impedance responses of pyrrole solutions were also affected by the applied potential. These anionic species also became incorporated in the polypyrrole film as a result of chemical adsorption and electrostatic interaction.

Original language	English
Pages (from-to)	105-114
Number of pages	10
Journal	Journal of Electroanalytical Chemistry
Volume	389
Issue number	1-2
DOIs	https://doi.org/10.1016/0022-0728(94)03838-T
Publication status	Published - 1 Jun 1995

Scopus Subject Areas

Analytical Chemistry
Chemical Engineering(all)
Electrochemistry

User-Defined Keywords

Ac voltammetry
Electropolymerization
Impedance
Pyrrole

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10.1016/0022-0728(94)03838-T

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title = "Ac voltammetric and impedance studies of the electrochemical oxidation of pyrrole in aqueous medium",

abstract = "The electropolymerization of pyrrole on platinum electrodes has been studied by ac voltammetric and impedance techniques. Anionic species such as chloride, bathophenanthroline disulfonate and ferricyanide, when present in solution during polymerization, adsorbed on the electrode surfaces and increased the rate of the electropolymerization process. The impedance responses of pyrrole solutions were also affected by the applied potential. These anionic species also became incorporated in the polypyrrole film as a result of chemical adsorption and electrostatic interaction.",

keywords = "Ac voltammetry, Electropolymerization, Impedance, Pyrrole",

author = "SHIU, {Kwok Keung} and Yingzhou Zhang and Wong, {Kwok Yin}",

note = "Funding Information: This work was partially supported by a grant from the Research Grants Council, UPGC, Hong Kong.",

year = "1995",

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doi = "10.1016/0022-0728(94)03838-T",

language = "English",

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journal = "Journal of Electroanalytical Chemistry",

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T1 - Ac voltammetric and impedance studies of the electrochemical oxidation of pyrrole in aqueous medium

AU - SHIU, Kwok Keung

AU - Zhang, Yingzhou

AU - Wong, Kwok Yin

N1 - Funding Information: This work was partially supported by a grant from the Research Grants Council, UPGC, Hong Kong.

PY - 1995/6/1

Y1 - 1995/6/1

N2 - The electropolymerization of pyrrole on platinum electrodes has been studied by ac voltammetric and impedance techniques. Anionic species such as chloride, bathophenanthroline disulfonate and ferricyanide, when present in solution during polymerization, adsorbed on the electrode surfaces and increased the rate of the electropolymerization process. The impedance responses of pyrrole solutions were also affected by the applied potential. These anionic species also became incorporated in the polypyrrole film as a result of chemical adsorption and electrostatic interaction.

AB - The electropolymerization of pyrrole on platinum electrodes has been studied by ac voltammetric and impedance techniques. Anionic species such as chloride, bathophenanthroline disulfonate and ferricyanide, when present in solution during polymerization, adsorbed on the electrode surfaces and increased the rate of the electropolymerization process. The impedance responses of pyrrole solutions were also affected by the applied potential. These anionic species also became incorporated in the polypyrrole film as a result of chemical adsorption and electrostatic interaction.

KW - Ac voltammetry

KW - Electropolymerization

KW - Impedance

KW - Pyrrole

UR - http://www.scopus.com/inward/record.url?scp=0038970910&partnerID=8YFLogxK

U2 - 10.1016/0022-0728(94)03838-T

DO - 10.1016/0022-0728(94)03838-T

M3 - Article

AN - SCOPUS:0038970910

SN - 1572-6657

VL - 389

SP - 105

EP - 114

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

IS - 1-2

ER -

Ac voltammetric and impedance studies of the electrochemical oxidation of pyrrole in aqueous medium

Abstract

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