Portal de Periódicos da CAPES

Chronopotentiometric reduction of copper(II) at a platinum electrode in acetonitrile

1971; Elsevier BV; Volume: 31; Issue: 1 Linguagem: Inglês

10.1016/s0022-0728(71)80036-0

2590-2954

T. Kowalski, Peter James Lingane,

Electrochemical sensors and biosensors

The kinetics of the Cu(II) Cu(I) couple are strongly dependent on electrode pretreatment, reminiscent of many observations in aqueous solutions. Reproducible results were obtained by first cycling the electrode between +1.5 and −1.5 V vs. Ag+ (0.01 M)/Ag. A non-linear Gaussian least-squares formalism was utilized for the estimation of electron transfer parameters from quasi-reversible and totally irreversible chronopotentiometric data. The influence of double-layer charging on the calculated kinetic parameters is discussed.