Naslov
Influence of the kinetics of reactant adsorption in the reverse scan square-wave voltammetry

Autori
Lovrić, Milivoj ; Komorsky-Lovrić, Šebojka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Presentation program / B. Tribollet, France - Nica : ISE, 2010, 205-205

Skup
61 st Annual Meeting of the International Society of Electrochemistry

Mjesto i datum
Nica, Francuska, 26.09.2010. - 01.10.2010

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
kinetics of reactant adsorption; square wave voltammetry

Sažetak
An electrode reaction complicated by slow adsorption of the reactant is analyzed theoretically for square-wave voltammetry with the inverse scan direction. The relationship between dimensionless net peak current and the logarithm of dimensionless rate constant of adsorption is a curve with the minimum and the 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 maximum, or minimum. The frequency of extreme serves for the estimation of the rate constant: log(kads D-1/2) = log(kads*)crit + 0.5 log fcrit, where (kads*)crit is a critical dimensionless rate constant of adsorption. Square-wave voltammetry is sensitive to the kinetics of adsorption if kads < 102 cm/s.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA