Voltammetric and impinging jet study of the behaviour of rhodized electrodes in acidic perchlorate solutions

M. Wasberg, G. Horányi

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The reduction of ClO-4 ions in acid media was studied at rhodized electrodes (roughness factor values of about 100-200) by voltammetric and hydrodynamic (impinging jet) methods. The effect of HClO4 concentration and the influence of pH (at a fixed ionic strength) on the shape of the voltammetric curve was investigated and interpreted. The inhibition of the reduction process by adsorbing anions, first of all by Cl- ions produced by reduction, was demonstrated. It has been stated that reliable information concerning the laws governing the reduction process cannot be obtained from voltammetric measurements alone. As an additional tool, a version of the impinging jet technique was used to find a relationship between the potential E of the rhodized electrode and the reduction rate I. A characteristic, almost symmetric, |I| versus E curve going through a maximum was obtained from the experimental data. Reduction mechanisms were suggested for the interpretation of the experimental results. The reaction rate versus potential curves calculated on the basis of model assumptions were compared with the experimental data.

Original languageEnglish
Pages (from-to)151-158
Number of pages8
JournalJournal of Electroanalytical Chemistry
Volume381
Issue number1-2
Publication statusPublished - Jan 24 1995

Fingerprint

Electrodes
Ions
Ionic strength
Reaction rates
Anions
perchlorate
Negative ions
Hydrodynamics
Surface roughness
Acids

Keywords

  • Impinging jet method
  • Perchloric acid
  • Reduction
  • Rhodium
  • Voltammetry

ASJC Scopus subject areas

  • Electrochemistry
  • Analytical Chemistry
  • Chemical Engineering(all)

Cite this

Voltammetric and impinging jet study of the behaviour of rhodized electrodes in acidic perchlorate solutions. / Wasberg, M.; Horányi, G.

In: Journal of Electroanalytical Chemistry, Vol. 381, No. 1-2, 24.01.1995, p. 151-158.

Research output: Contribution to journalArticle

@article{d72cd8d0ad024e2295a94977dc11014d,
title = "Voltammetric and impinging jet study of the behaviour of rhodized electrodes in acidic perchlorate solutions",
abstract = "The reduction of ClO-4 ions in acid media was studied at rhodized electrodes (roughness factor values of about 100-200) by voltammetric and hydrodynamic (impinging jet) methods. The effect of HClO4 concentration and the influence of pH (at a fixed ionic strength) on the shape of the voltammetric curve was investigated and interpreted. The inhibition of the reduction process by adsorbing anions, first of all by Cl- ions produced by reduction, was demonstrated. It has been stated that reliable information concerning the laws governing the reduction process cannot be obtained from voltammetric measurements alone. As an additional tool, a version of the impinging jet technique was used to find a relationship between the potential E of the rhodized electrode and the reduction rate I. A characteristic, almost symmetric, |I| versus E curve going through a maximum was obtained from the experimental data. Reduction mechanisms were suggested for the interpretation of the experimental results. The reaction rate versus potential curves calculated on the basis of model assumptions were compared with the experimental data.",
keywords = "Impinging jet method, Perchloric acid, Reduction, Rhodium, Voltammetry",
author = "M. Wasberg and G. Hor{\'a}nyi",
year = "1995",
month = "1",
day = "24",
language = "English",
volume = "381",
pages = "151--158",
journal = "Journal of Electroanalytical Chemistry",
issn = "0022-0728",
publisher = "Elsevier Sequoia",
number = "1-2",

}

TY - JOUR

T1 - Voltammetric and impinging jet study of the behaviour of rhodized electrodes in acidic perchlorate solutions

AU - Wasberg, M.

AU - Horányi, G.

PY - 1995/1/24

Y1 - 1995/1/24

N2 - The reduction of ClO-4 ions in acid media was studied at rhodized electrodes (roughness factor values of about 100-200) by voltammetric and hydrodynamic (impinging jet) methods. The effect of HClO4 concentration and the influence of pH (at a fixed ionic strength) on the shape of the voltammetric curve was investigated and interpreted. The inhibition of the reduction process by adsorbing anions, first of all by Cl- ions produced by reduction, was demonstrated. It has been stated that reliable information concerning the laws governing the reduction process cannot be obtained from voltammetric measurements alone. As an additional tool, a version of the impinging jet technique was used to find a relationship between the potential E of the rhodized electrode and the reduction rate I. A characteristic, almost symmetric, |I| versus E curve going through a maximum was obtained from the experimental data. Reduction mechanisms were suggested for the interpretation of the experimental results. The reaction rate versus potential curves calculated on the basis of model assumptions were compared with the experimental data.

AB - The reduction of ClO-4 ions in acid media was studied at rhodized electrodes (roughness factor values of about 100-200) by voltammetric and hydrodynamic (impinging jet) methods. The effect of HClO4 concentration and the influence of pH (at a fixed ionic strength) on the shape of the voltammetric curve was investigated and interpreted. The inhibition of the reduction process by adsorbing anions, first of all by Cl- ions produced by reduction, was demonstrated. It has been stated that reliable information concerning the laws governing the reduction process cannot be obtained from voltammetric measurements alone. As an additional tool, a version of the impinging jet technique was used to find a relationship between the potential E of the rhodized electrode and the reduction rate I. A characteristic, almost symmetric, |I| versus E curve going through a maximum was obtained from the experimental data. Reduction mechanisms were suggested for the interpretation of the experimental results. The reaction rate versus potential curves calculated on the basis of model assumptions were compared with the experimental data.

KW - Impinging jet method

KW - Perchloric acid

KW - Reduction

KW - Rhodium

KW - Voltammetry

UR - http://www.scopus.com/inward/record.url?scp=0038122477&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0038122477&partnerID=8YFLogxK

M3 - Article

VL - 381

SP - 151

EP - 158

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

SN - 0022-0728

IS - 1-2

ER -