Application of a cyclic renewable silver amalgam liquid film electrode (R-AgLAFE) to study the electroreduction processes of Bi(III) ions in the presence of cysteine

Abstract

The cyclically refreshable liquid silver amalgam film silver-based electrode (R-AgLAFE) to study electrode processes under the "cap-pair" conditions were used. The effects of cysteine on the kinetics and the mechanism of Bi(III) electroreduction in chlorates(VII) have been studied. The methodology of the study is based on electrochemical methods: DC polarography, square wave voltammetric (SWV), and cyclic voltammetric (CV). The magnitude of the catalytic effect is related to the formation of the Bi(III)-Hg(SR)2 active complexes mediating electron transfer equilibrium. This reaction controls the total rate of the process.