Isopotential points in reverse square-wave voltammetry

Square‐Wave Voltammetry: A Review on the Recent Progress

“…The basis of this highly promising technique is found in the works of Chen [14], Xinsheng [15], Bottomley [16], Molina [17], as well as in a series of studies in which SWV was applied in a reverse mode [18][19][20][21]. Typical potential waveform of CSWV is depicted in Figure 5A, consisting of direct and reverse SW potential waveforms.…”

“…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.…”

Theory of Square-Wave Voltammetry of Two-Step Electrode Reaction Using an Inverse Scan Direction

“…In square-wave voltammetry (SWV), it is usual that only the reactant is initially present in the solution and that at the starting potential, no electrode reaction occurs [1][2][3]. However, there is a variation of SWV in which the measurement starts at the potential at which the electrode reaction is controlled by the diffusion of reactant and the scan direction is reversed comparing to the classical SWV [4][5][6]. This inverse mode was used for the determination of kinetic parameters of electrode reactions [7][8][9][10].…”

Extension of electrochemical methods of study of inclusion complexes to the case where the guest molecule undergoes a multielectron, multiproton electrode reaction: Study of phenolic acids forming inclusion complexes with α- and β-cyclodextrins

“…Also of interest is the almost perfect ''isopotential point'' at about zero current and +0.5 V. Though such behavior has been seen in other cases with all participants in the reaction being solution species [43][44][45], it is not clear why it appears here. The only obvious thing that it has in common with other systems is that the voltammograms are obtained for a series of solutions with a constant value of the total concentration of electroactive species (the phenolic acid) with the relative amount of the two forms (the free and complexed phenolic acid) varying [43].…”