Theory of reverse scan square-wave voltammetry influenced by the kinetics of reactant adsorption

• Authors: Milivoj Lovrić , Šebojka Komorsky-Lovrić
• Languages of publication: EN

Abstracts

EN

A model of electrode reaction complicated by slow adsorption of the reactant is developed for square-wave voltammetry with inverse scan direction. The relationship between the dimensionless net peak current and the logarithm of dimensionless rate constant of adsorption is a curve with a minimum and a maximum. For this reason the ratio of real net peak current and the square-root of frequency is a non-linear function of the logarithm of frequency and exhibits either a maximum or a minimum. The frequency of extreme serves for the estimation of the rate constant: log(k ads /D 1/2 ) = log(k*ads )crit + 0.5 log f crit , where (k*ads )crit is a critical dimensionless rate constant of adsorption. Square-wave voltammetry is sensitive to the kinetics of adsorption if k ads 2 cm s−1 [...]

Keywords

EN

Square-wave voltammetry; Kinetics of adsorption; Adsorption of reactant

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2010
• Volume: 8
• Issue: 3
• Pages: 513-518

Dates

published

1 - 6 - 2010

online

25 - 4 - 2010

Contributors

author

Milivoj Lovrić

• Department of Marine and Environmental Research, “Rudjer Bošković” Institute, P.O. Box 180, HR-10002, Zagreb, Hrvatska (Croatia)

author

Šebojka Komorsky-Lovrić

• Department of Marine and Environmental Research, “Rudjer Bošković” Institute, P.O. Box 180, HR-10002, Zagreb, Hrvatska (Croatia)

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Identifiers

DOI

10.2478/s11532-010-0034-y