Theory of Stationary Electrode Polarography for a Multistep Charge Transfer with Catalytic (Cyclic) Regeneration of the Reactant.

Electroreduction of halogen oxoanions via autocatalytic redox mediation by halide anions: novel EC” mechanism. Theory for stationary 1D regime

“…C ads + P(0) (non-reactive product(s)) (4EC) 4 EC mechanism with catalysis by solute redox mediator couple described by reactions [19,20,[23][24][25][26][27][28][29][30][31]: E r C 0 i : C + ne À @ B, B + A ! C + P (non-reactive product(s)) (5EC) (5'EC) or C + ne À @ B, m B + m A A !…”

The utility of Shewanella japonica for microbial fuel cells

“…Use of electroanalytical methods to compare mediation of oxygen reduction by S. japonica-exposed supernatants and by riboflavin Electroanalytical methods enable determination of thermodynamics and kinetics of electrochemical reactions mediated by freely diffusing redox species (Polcyn and Shain, 1966;Andrieux et al, 1980). Precise determination of rate constants for reaction between the mediator and substrate and electrochemical reduction/oxidation potentials of both the mediator species and the substrate require either large data sets which are fit to analytical expressions, or comparison of smaller data sets to digitally simulated data.…”

“…Electrocatalytic reduction of oxygen was used as a metric for redox activity. The simplest case of mediated electrocatalysis by a freely diffusing mediator is described generally by the following three equations (Polcyn and Shain, 1966;Andrieux et al, 1980):…”

Study on the Polarographic Catalytic Wave of Vitamin P in the Presence of Persulfate and Its Application

“…Qualitatively, the effect of the chemical reaction coupled to the two charge transfer processes led to an increase in the maximum current of the first charge transfer because of the chemical regeneration of the electroactive group of reactant (21). It was well known that the reduction of S 2 O 8 2Ϫ was two successive oneelectron processes via the sulfate radical anion SO 4 •Ϫ , which possessed stronger oxidization and was more active than S 2 O 8 2Ϫ .…”