Adsorptive square-wave voltammetry of quasi-reversible electrode processes with a coupled catalytic chemical reaction

SABRINA VETTORELO; FERNANDO GARAY

JOURNAL OF SOLID STATE ELECTROCHEMISTRY (PRINT)

SPRINGER

Lugar: Berlin; Año: 2016 p. 1 - 1

1432-8488

any electroanalytical methods employ the adsorptive accumulation of the analyte followed by a given stripping voltammetric technique. Square-wave Voltammetry (SWV) is one of the most sensitive techniques and catalytic electrode reactions provide a mean for enhancing the sensitivity and selectivity of a given quantitative determination. In this manuscript, the theory of SWV for a quasi-reversible electrode process coupled to a catalytic chemical reaction between an adsorbed reagent and a soluble product is presented. The dependences of the dimensionless net peak current and its peak potential on the value of the standard charge transfer rate constant are described. The variation of the SWV parameters such as frequency and potential pulse amplitude are discussed. The effect of the chemical and electrochemical kinetics on the voltammetric profile is analysed.