Effect of ultrasonic frequency and intensity upon electrode kinetic parameters for the Ag(S2O3)23-/Ag redox couple

B. Pollet; J. P. Lorimer; S. S. Phull; T. J. Mason; D. J. Walton; J. Y. Hihn; V. Ligier; M. Wéry

doi:10.1023/A:1003684101855

Effect of ultrasonic frequency and intensity upon electrode kinetic parameters for the Ag(S₂O₃)₂^3-/Ag redox couple

B. Pollet, J. P. Lorimer, S. S. Phull, T. J. Mason, D. J. Walton, J. Y. Hihn, V. Ligier, M. Wéry

Université de Franche-Comté

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

30 Citations (Scopus)

Abstract

This paper describes the effect of ultrasound on electrochemical parameters important in the removal of silver from photographic processing solutions. Decomposition voltages (obtained galvanostatically) and discharge potentials (obtained potentiostatically) for the reduction of the silver complex, Ag(S₂O₃)₂^3- was studied in dilute aqueous Na₂S₂O₃/NaHSO₃ solution on stainless steel and carbon disc electrodes in both the absence and presence of ultrasound. Under silent conditions, silver deposition is the main reaction occurring at the electrode. Under sonication at 20 kHz and 500 kHz, the reduction wave shifts anodically with increasing ultrasonic intensity. Similarly, the discharge of hydrogen and oxygen shifts anodically and cathodically respectively with increasing ultrasonic power. The decrease in decomposition voltage in the presence of ultrasound is due to the combined effect of a decrease in anodic overpotential and an increase in cathodic overpotential.

Original language	English
Pages (from-to)	1359-1366
Number of pages	8
Journal	Journal of Applied Electrochemistry
Volume	29
Issue number	12
DOIs	https://doi.org/10.1023/A:1003684101855
Publication status	Published - 1 Dec 1999

ASJC Scopus subject areas

General Chemical Engineering
Electrochemistry
Materials Chemistry

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10.1023/A:1003684101855

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title = "Effect of ultrasonic frequency and intensity upon electrode kinetic parameters for the Ag(S2O3)23-/Ag redox couple",

abstract = "This paper describes the effect of ultrasound on electrochemical parameters important in the removal of silver from photographic processing solutions. Decomposition voltages (obtained galvanostatically) and discharge potentials (obtained potentiostatically) for the reduction of the silver complex, Ag(S2O3)23- was studied in dilute aqueous Na2S2O3/NaHSO3 solution on stainless steel and carbon disc electrodes in both the absence and presence of ultrasound. Under silent conditions, silver deposition is the main reaction occurring at the electrode. Under sonication at 20 kHz and 500 kHz, the reduction wave shifts anodically with increasing ultrasonic intensity. Similarly, the discharge of hydrogen and oxygen shifts anodically and cathodically respectively with increasing ultrasonic power. The decrease in decomposition voltage in the presence of ultrasound is due to the combined effect of a decrease in anodic overpotential and an increase in cathodic overpotential.",

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T1 - Effect of ultrasonic frequency and intensity upon electrode kinetic parameters for the Ag(S2O3)23-/Ag redox couple

AU - Pollet, B.

AU - Lorimer, J. P.

AU - Phull, S. S.

AU - Mason, T. J.

AU - Walton, D. J.

AU - Hihn, J. Y.

AU - Ligier, V.

AU - Wéry, M.

PY - 1999/12/1

Y1 - 1999/12/1

N2 - This paper describes the effect of ultrasound on electrochemical parameters important in the removal of silver from photographic processing solutions. Decomposition voltages (obtained galvanostatically) and discharge potentials (obtained potentiostatically) for the reduction of the silver complex, Ag(S2O3)23- was studied in dilute aqueous Na2S2O3/NaHSO3 solution on stainless steel and carbon disc electrodes in both the absence and presence of ultrasound. Under silent conditions, silver deposition is the main reaction occurring at the electrode. Under sonication at 20 kHz and 500 kHz, the reduction wave shifts anodically with increasing ultrasonic intensity. Similarly, the discharge of hydrogen and oxygen shifts anodically and cathodically respectively with increasing ultrasonic power. The decrease in decomposition voltage in the presence of ultrasound is due to the combined effect of a decrease in anodic overpotential and an increase in cathodic overpotential.

AB - This paper describes the effect of ultrasound on electrochemical parameters important in the removal of silver from photographic processing solutions. Decomposition voltages (obtained galvanostatically) and discharge potentials (obtained potentiostatically) for the reduction of the silver complex, Ag(S2O3)23- was studied in dilute aqueous Na2S2O3/NaHSO3 solution on stainless steel and carbon disc electrodes in both the absence and presence of ultrasound. Under silent conditions, silver deposition is the main reaction occurring at the electrode. Under sonication at 20 kHz and 500 kHz, the reduction wave shifts anodically with increasing ultrasonic intensity. Similarly, the discharge of hydrogen and oxygen shifts anodically and cathodically respectively with increasing ultrasonic power. The decrease in decomposition voltage in the presence of ultrasound is due to the combined effect of a decrease in anodic overpotential and an increase in cathodic overpotential.

UR - https://www.scopus.com/pages/publications/0033327171

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DO - 10.1023/A:1003684101855

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SN - 0021-891X

VL - 29

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EP - 1366

JO - Journal of Applied Electrochemistry

JF - Journal of Applied Electrochemistry

IS - 12

ER -

Effect of ultrasonic frequency and intensity upon electrode kinetic parameters for the Ag(S₂O₃)₂^3-/Ag redox couple

Abstract

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