Electrochemical Behavior of Ni(II)‎-Salen at the Mercury Electrode

الملخص EN

The complex Ni(II)-salen has been studied using cyclic and square-wave cathodic stripping voltammetry at the static mercury drop electrode in an aqueous media of phosphate and Hepes buffers (at pH 7.0).

The resulting voltammograms consist of a totally irreversible one-electron transfer attributable to the coupling of Ni(II) salen/Ni(I) salen via an EC mechanism.

The mean value for the transfer coefficient α in both supporting electrolytes was calculated as 0.35 ± 0.05.

The amount of reactant adsorbed after 60 s of accumulation at −700 mV was calculated to be 2.8 × 10−8 mol·cm−2.

The detection limit for nickel determination was found to be 3.4 × 10−9 mol L−1.