Naslov
Isopotential points in square-wave voltammetry of reversible electrode reactions

Autori
Zelić, Marina ; Lovrić, Milivoj

Izvornik
Collection of Czechoslovak Chemical Communications (0010-0765) 74 (2009), 10; 1489-1501

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
square-wave voltammetry ; reversible electrode reaction ; backward current ; isopotential point ; Uranium(VI) ; Europium(III) ; electrochemistry

Sažetak
Isopotential points in square-wave voltammetry are described for the first time. Model calculations and real measurements (performed with UO22+ and Eu3+ in perchlorate and bromide solutions, respectively) indicate that such an intersection could be observed when backward components of the net response, resulting from an increase in frequency or reactant concentration, are presented together. The electrode reaction should be fully reversible because quasireversible or slower electron transfer processes give the isopoints only at increasing reactant concentrations but not at increasing square-wave frequencies. The effect could be used as an additional diagnostic criterion for recognition of reversible electrode reactions where products remain dissolved in the electrolyte solution.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA