Characterization of the Redox reaction of V(V) in Ammonia Buffers with Square-Wave Voltammetry

Mirčeski, Valentin; Gulaboski, Rubin; Petrovska-Jovanović, S.; Stojanova, K.

doi:10.4152/pea.200101025

Cited by 15 publications

(41 citation statements)

References 9 publications

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“…Its importance stems from the fact that it can be exploited for estimation of the electron transfer kinetics [13,14,[28][29][30][31][32][33]35]. Shown in Fig.…”

Section: Slow Electron Transfermentioning

confidence: 99%

“…One of the most intriguing features of the SW voltammetric response of a surface electrode reactions is the ''quasireversible maximum'' [13,14,[28][29][30][31][32][33]35], which is manifested as a parabolic dependence of the dimensionless net peak current on the logarithm of the redox kinetic parameter k. The origin and properties of the quasireversible maximum has been elaborated in detail [28,29,35]. Its importance stems from the fact that it can be exploited for estimation of the electron transfer kinetics [13,14,[28][29][30][31][32][33]35].…”

Section: Slow Electron Transfermentioning

confidence: 99%

“…This is due to its feasibilities for relatively easy consideration of diverse reaction mechanisms [14,[24][25][26]. In the last two decades, however, square-wave voltammetry (SWV) replaces considerably CV in analytically oriented studies or studies concerned with the mechanism of the electrode reaction [27][28][29][30][31][32][33][34][35]. The SWV is capable to discriminate the charging current as well as to provide an insight into both half-electrode reactions, making this technique particularly suitable for studying the electrode mechanism [27][28][29][30][31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

“…In the last two decades, however, square-wave voltammetry (SWV) replaces considerably CV in analytically oriented studies or studies concerned with the mechanism of the electrode reaction [27][28][29][30][31][32][33][34][35]. The SWV is capable to discriminate the charging current as well as to provide an insight into both half-electrode reactions, making this technique particularly suitable for studying the electrode mechanism [27][28][29][30][31][32][33][34][35]. Several electrode mechanisms involving chemical reactions under semi-infinite diffusion mass transfer in SWV have been studied by Osteryoung and OÕDea [2,4] and others [16][17][18][19][20]22,23].…”

Section: Introductionmentioning

confidence: 99%

“…Beside the diffusion controlled electrode reactions, significant attention has also been paid to the diffusionless electrode reactions, e.g., the surface electrode reactions [3,13,14,21,[24][25][26][28][29][30][31][32][33][34][35]. It has been shown that the voltammetric responses of a surface electrode reaction possess unique features such as a ''quasireversible maximum'' [13,14,[28][29][30][31][32][33][34][35] and ''split SW peaks'' [13,14,31,34], which both can be utilized for the determination of the kinetics of the electrode reaction. Moreover, in recent papers, the properties of a surface catalytic electrode reaction were elaborated in detail, establishing criteria for measuring the kinetics of the catalytic reaction [13,14].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Theoretical study of a surface electrode reaction preceded by a homogeneous chemical reaction under conditions of square-wave voltammetry

Gulaboski

Mirčeski

Lovrić

et al. 2005

Electrochemistry Communications

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A theoretical model of a surface electrode reaction coupled with a preceding chemical reaction (surface CE electrode mechanism) is theoretically studied under conditions of square-wave voltammetry. The position and the shape of the theoretical voltammograms are function of the redox kinetic parameter k ¼ ks f where k s is the standard electron exchange rate constant and f is the frequency of the potential modulation, chemical kinetic parameterf , where k f and k b are the forward and backward rate constants of the preceding chemical reaction, respectively, and the equilibrium constant of the chemical reaction K. The influence of all these parameters to the theoretical square-wave voltammograms is investigated in detail. A theoretical methodology for estimation of the kinetic and thermodynamic parameters of the electrode mechanism is proposed.

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“…Its importance stems from the fact that it can be exploited for estimation of the electron transfer kinetics [13,14,[28][29][30][31][32][33]35]. Shown in Fig.…”

Section: Slow Electron Transfermentioning

confidence: 99%

Section: Slow Electron Transfermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Theoretical study of a surface electrode reaction preceded by a homogeneous chemical reaction under conditions of square-wave voltammetry

Gulaboski

Mirčeski

Lovrić

et al. 2005

Electrochemistry Communications

View full text Add to dashboard Cite

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First Electroanalytical Studies of Profluralin with Square Wave Voltammetry Using Glassy Carbon Electrode

et al. 2016

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The electrochemical behaviour of profluralin (PFL) was investigated with square wave voltammetry (SWV) and cyclic voltammetry at bare and modified with graphene, graphene oxide, reduced graphene oxide, carbon nanotubes glassy carbon electrode. The influence of various factors such as pH, buffer composition, ionic surfactants and voltammetric parameters was studied. The best results in terms of signal shape and intensity were recorded in 0.04 M Britton‐Robinson buffer at pH 2.0 at −0.43 V versus Ag/AgCl. In acidic medium profluralin produces single cathodic signal of an irreversible nature. Observed peak (two superimposed signals from two nitro groups) is a result of PFL reduction controlled by diffusion processes. Linearity of peak currents (Ip) vs. concentrations of profluralin was found in the range of 1.0×10−7 to 1.0×10−6 M with a detection limit of 2.6×10−8 M using fast and sensitive SWV. The developed method has been applied for the quantitative analysis of profluralin in spiked environmental samples with very good average recoveries in the range from 98.6 to 99.9 % with a mean relative standard deviation of 4.0 %.

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Square‐wave Voltammetry of Two‐step Surface Electrode Mechanisms Coupled with Chemical Reactions – A Theoretical Overview

et al. 2019

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Square‐wave voltammetry (SWV) of so‐called “surface redox reactions” is seen as a simple and efficient tool to quantify large number of drugs, physiologically active substances and other important chemicals. It also provides elegant methods to get access to relevant kinetic and thermodynamic parameters related to many lipophilic compounds. Moreover, with this technique we can study activity of various enzymes by exploring the “protein‐film voltammetry” set up. In this work, we focus on theoretical SWV features of four complex surface electrode mechanisms, in which the electron exchange between the working electrode and the studied redox substrate takes place in two successive steps. While we present large number of calculated square‐wave voltammograms, we give hints to recognize particular two‐step surface mechanism, but also to distinguish it from other similar mechanisms. We present plenty of relevant aspects of surface two‐step surface EE, two‐step surface ECE and surface catalytic EEC’ mechanisms. Moreover, we present for the first time a series of theoretical results related to two‐step surface EECrev mechanism (i. e. two‐step surface reaction coupled to follow‐up reversible chemical step). The simulated voltammetric patterns presented in this work can bring relevant aspects to resolve some experimental situations met in voltammetry of many redox enzymes and other important substances whose electrochemical transformation occurs in two‐steps.

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Characterization of the Redox reaction of V(V) in Ammonia Buffers with Square-Wave Voltammetry

Cited by 15 publications

References 9 publications

Theoretical study of a surface electrode reaction preceded by a homogeneous chemical reaction under conditions of square-wave voltammetry

Theoretical study of a surface electrode reaction preceded by a homogeneous chemical reaction under conditions of square-wave voltammetry

First Electroanalytical Studies of Profluralin with Square Wave Voltammetry Using Glassy Carbon Electrode

Square‐wave Voltammetry of Two‐step Surface Electrode Mechanisms Coupled with Chemical Reactions – A Theoretical Overview

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