Naslov
Characterization of electrode processes by cyclic square-wave voltammetry

Autori
Jadreško, Dijana ; Mirčeski, Valentin

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

Izvornik
MatCatNet Workshop “From Molecules to Functionalised Materials“ Scientific module “Polymers” / German Academic Exchange Service - Skopje : Universitat Leipzig, 2014

Skup
MatCatNet Workshop “From Molecules to Functionalised Materials“ Scientific module “Polymers”

Mjesto i datum
Ohrid, Sjeverna Makedonija, 05.09.2014. - 10.09.2014

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Cyclic square-wave voltammetry; excitation signal; kinetics; theory

Sažetak
A theoretical analysis of reversible and kinetically controlled electrode reactions, as well as electrode processes controlled by kinetics of homogeneous chemical reaction, under conditions of cyclic square-wave voltammetry (CSWV) is presented. The cyclic square-wave voltammetry enables faster and more complete characterization of the electrode processes, comparing with classical square-wave voltammetry. Electron transfer coefficients (α and β), as well as the standard rate constant of a simple electrode reaction Ox + ne = Red, can be determined from the slopes of linear dependences of cathodic and anodic net peak potentials (Ep) on the logarithm of frequency. Furthermore, the rate constant of follow-up chemical reaction (kf) can be estimated from the linear ependence of anodic to cathodic net peak currents ratio (∆ip, a/∆ip, c) on log (f). The criteria for recognition of electrode mechanisms are given.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA