Electrogeneration and some properties of the superoxide ion in aqueous solutions

Chevalet, Jean; Rouelle, François; Gierst, Lucien; Lambert, J. P.

doi:10.1016/s0022-0728(72)80488-1

Cited by 126 publications

(46 citation statements)

References 18 publications

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“…These results are in disagreement with the observations reported later by Chevalet et al [3], who were able to obtain a polarographic wave due to the first reduction step O2/O~ alone by adding the surfactant a-quinoline which evidently inhibits the subsequent processes. Their conclusion is that the protonation of 02 is a heterogeneous process occurring at the electrode surface.…”

Section: Introductioncontrasting

confidence: 99%

“…This is likely to confirm the speculations of other authors, e.g. of Chevalet et al [3]. These authors were able to study the first step separately by d.c. polarography, after addition of a-quinoline which evidently prevents the second step from proceeding.…”

Section: The Transfer Coefficients and The Reaction Mechanismsupporting

confidence: 89%

“…This is in remarkable agreement with the value estimated by Jacq and Bloch [ 1], from otherwise quite different considerations. The value determined by Chevalet et al [3], ca. 1.5 X 10 -3 cm s -1, is much lower.…”

Section: Ksh = Ksh 1 Exp [--A~l(e ° --E°)f/rt]mentioning

confidence: 84%

“…Chevalet et al [3] report the value E ° = --355 mV vs. SCE. With E ° = --168 mV vs. SCE, ksh = 0.035 cm s -1 and a~l = 0.5 we obtain ksh I = 1.34 cm s -1.…”

Section: Ksh = Ksh 1 Exp [--A~l(e ° --E°)f/rt]mentioning

confidence: 96%

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A faradaic impedance study of the reduction of oxygen from aqueous alkaline solution at the dropping mercury electrode

Pieterse

1980

Journal of Electroanalytical Chemistry

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The reduction of oxygen to hydrogen peroxide at a dropping mercury electrode in an aqueous solution of 1 M KNO3 + 0.04 M KOH (pH = 12.35) has been studied by means of impedance measurements as a function of frequency and d.c. potential. The reaction appears to be nearly reversible in the dc sense, but quasi-reversible in the ac sense. The impedance data obey the Randles' equivalent circuit with the following apparent values for the kinetic parameters: standard heterogeneous rate constant ksah = 0.035 cm s -1 and cathodic transfer coefficient ~c = 0.22. The results are interpreted in terms of a two-step charge transfer mechanism with the step O2 + e ~ O~ being rate-determining.

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Section: Introductioncontrasting

confidence: 99%

Section: The Transfer Coefficients and The Reaction Mechanismsupporting

confidence: 89%

Section: Ksh = Ksh 1 Exp [--A~l(e ° --E°)f/rt]mentioning

confidence: 84%

“…Chevalet et al [3] report the value E ° = --355 mV vs. SCE. With E ° = --168 mV vs. SCE, ksh = 0.035 cm s -1 and a~l = 0.5 we obtain ksh I = 1.34 cm s -1.…”

Section: Ksh = Ksh 1 Exp [--A~l(e ° --E°)f/rt]mentioning

confidence: 96%

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A faradaic impedance study of the reduction of oxygen from aqueous alkaline solution at the dropping mercury electrode

Pieterse

1980

Journal of Electroanalytical Chemistry

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show abstract

“…Chevalet et al [8] give a complete potential -pH diagram for the oxidation states 0: -Oil -O;", from pH -1 to pH t 18. At high pH values the system 0: -0;' has a potential equalling that calculated, E,(O,/O,), independent of pH.…”

Section: Dqh) F Eo(q/q') =And(qiqh)mentioning

confidence: 99%