Square Wave Voltammetry and Voltcoulometry applied to electrocatalytic reactions. Oxidation of ferrocyanide at a ferrocene modified gold electrode

González, Joaquı́n; Soto, Carmen M.; Molina, Á.

doi:10.1016/j.jelechem.2009.07.014

Cited by 21 publications

(13 citation statements)

References 15 publications

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“…In the reviewed period significant contributions in the theory of SWV have been done by the research groups of Lovric [18][19][20][22][23][24][25][26][27][28][29], Molina [17,[30][31][32][33][34][35], Compton [36][37][38][39], Mirceski [40][41][42][43], Gulaboski [44][45][46][47], and others [48][49][50]. The theory refers to a variety of electrode mechanisms including dissolved or immobilized redox couples at macroscopic planar or microelectrodes, as well as processes undergoing in a restricted diffusion space.…”

Section: Electrode Mechanisms Studied With Swvmentioning

confidence: 99%

“…The theory refers to a variety of electrode mechanisms including dissolved or immobilized redox couples at macroscopic planar or microelectrodes, as well as processes undergoing in a restricted diffusion space. Due to their relevance for biochemical systems, multistep, consecutive electron transfers [17, 22-24, 33, 44] and catalytic mechanisms [30,31,34,45] have received considerable attention. Importantly, a series of works have been dedicated to the study the electrode processes in the frame of Marcus-Hush electron transfer kinetic model [36][37][38][39].…”

Section: Electrode Mechanisms Studied With Swvmentioning

confidence: 99%

“…A detailed analysis of a variety of catalytic mechanisms is presented in works of Molina et al [30,31,34]. They studied theoretically a simple EC' catalytic reaction scheme at a disc electrode [34], where the electrode reaction is reversible process, whereas the regenerative follow-up chemical reaction is chemically reversible, attributed with first-order kinetics.…”

Section: Electrode Mechanisms Studied With Swvmentioning

confidence: 99%

See 2 more Smart Citations

Square‐Wave Voltammetry: A Review on the Recent Progress

et al. 2013

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A review on the recent progress of square-wave voltammetry is presented, covering the period of the last five years. The review addresses the new theoretical development of the technique as well as its application for mechanistic purposes, electrode kinetic measurements, biochemical and analytical applications. Besides, a few novel methodological modifications are proposed that might expand the scope and application of the technique.

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Section: Electrode Mechanisms Studied With Swvmentioning

confidence: 99%

Section: Electrode Mechanisms Studied With Swvmentioning

confidence: 99%

Section: Electrode Mechanisms Studied With Swvmentioning

confidence: 99%

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Square‐Wave Voltammetry: A Review on the Recent Progress

et al. 2013

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“…Of these, the so-called "voltammetric enzymatic biosensors" are probably the most important [27][28][29]. Although the EC' electrode mechanism is one of the most thoroughly studied under voltammetric conditions [1,8,[16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34], we give in this work some new insights that are not elaborated so far in detail. The main focus of this theoretical work is on the features of the square-wave (SW) voltammograms of a quasireversible electrode reaction coupled with a chemical catalytic reaction.…”

Section: Introductionmentioning

confidence: 99%

New aspects of the electrochemical-catalytic (EC’) mechanism in square-wave voltammetry

Gulaboski

Mirčeski

2015

Electrochimica Acta

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Keywords:EC' catalytic mechanism electrode reaction kinetics standard rate constant enzymatic biosensors protein-film voltammetry A B S T R A C T Several new theoretical aspects of the electrocatalytic (regenerative) EC' mechanism under conditions of square-wave (SWV) and staircase cyclic voltammetry (SCV) are presented. Elaborating the effect of the rate of the catalytic reaction in the diffusion-controlled catalytic mechanism (diffusional EC' mechanism) and surface catalytic mechanism (surface EC' mechanism), we refer to several phenomena related to the shift of the position and the half-peak width of the net peak in square-wave voltammetry (SWV). If the rate of the catalytic reaction is much higher than the kinetics of the electrode reaction, a linear dependence between the peak potential of the simulated net SWV peaks and the logarithm of the catalytic parameter can be observed. The intercept of that linear dependence is a function of the kinetics of the electrode reaction. Based on this finding, we propose a new methodology to determine the electrode kinetics rate constant. The proposed approach relies on the variation of the concentration of the regenerative reagent. To the best of our knowledge, this is one of very few voltammetric approaches for electrode kinetic measurements not based on the time or potential variation in the experimental analyzes. In addition, we present a brief analysis of the catalytic mechanism under conditions of staircase cyclic voltammetry in order to emphasize the main differences between SCV and SWV.

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“…A plethora of intriguing studies has been conducted in relation to the kinetics of charge transfer processes at liquid/liquid interfaces [18][19][20][21][22][23], electrochemistry of immobilized proteins [24,25], and catalytic mechanisms [26][27][28], revealing that SWV is highly suited for both mechanistic and kinetic characterization of electrode reactions, besides its excellent analytical performances [29][30][31][32][33][34] and its appropriateness for bioanalytical applications [35][36][37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

Measuring the Electrode Kinetics of Surface Confined Electrode Reactions at a Constant Scan Rate

2014

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The kinetics of surface confined electrode reactions of alizarin, vitamin B12, and vitamin K2 is measured with square‐wave voltammetry over a wide pH interval, by applying the recent methodology for kinetic analysis at a constant scan rate [V. Mirceski, D. Guziejewski, K. Lisichkov, Electrochim. Acta 2013, 114, 667–673]. The reliability and the simplicity of the recent methodology is confirmed. The methodology requires analysis of the peak potential separation of the forward and backward component of the response as a function of the pulse height (SW amplitude), for a given frequency (i.e. constant scan rate) of the potential modulation.

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Square Wave Voltammetry and Voltcoulometry applied to electrocatalytic reactions. Oxidation of ferrocyanide at a ferrocene modified gold electrode

Cited by 21 publications

References 15 publications

Square‐Wave Voltammetry: A Review on the Recent Progress

Square‐Wave Voltammetry: A Review on the Recent Progress

New aspects of the electrochemical-catalytic (EC’) mechanism in square-wave voltammetry

Measuring the Electrode Kinetics of Surface Confined Electrode Reactions at a Constant Scan Rate

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