Voltammetry of redox reactions using the general form of the oxidized or reduced species adsorption isotherm

Vvedenskii, A. V.; Kartashova, T. V.; Bobrinskaya, E. V.

doi:10.1134/s1023193508120100

Cited by 3 publications

(5 citation statements)

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“…At a substantial anodic polarization of the electrode, ; and, since and , As 1 Below, we show that there is no need in deriving particular Θ Ox (Е) and Θ Red (Е) dependences for solving the problem for mulated. or the dependence of the total reaction rate on the character of rapid adsorption stages, but the effect of their kinet ics is not taken into account.…”

Section: Formulation Of the Problemmentioning

confidence: 98%

“…Here, and are the rates of the direct and reverse reactions of the corresponding stage. Note that condi tions (5a) and (5b) do not imply that there is no poten tial dependence of Θ Re and Θ Ох coverages 1 Using conditions (5a) and (5b) and taking into account that reaction rates (4a) and (4b) can be written in the current units as follows:…”

Section: Formulation Of the Problemmentioning

confidence: 99%

“…Similarly to [1], the limitations of the diffusive sup ply or withdrawal of the reagents were assumed to be absent and the electrode surface was assumed to be unchanged with time. Under the anodic polarization conditions, the electrode potential was assumed to change linearly with time starting from the initial equi librium value (E e ), (2) and the appearance of any difficultly soluble com pound on the surface, which can affect the adsorption of reagents, was assumed to be impossible in the whole range of potential values.…”

Section: Formulation Of the Problemmentioning

confidence: 99%

“…The system can be noticeably simplified, if we draw an assumption about the quasi equilibrium character of both adsorption stages in the whole range of the changes in the E potential, which is widely used in the kinetic analysis of electrode processes [1,2,[15][16][17]:…”

Section: Formulation Of the Problemmentioning

confidence: 99%

“…The theory of the method of linear voltammetry (LVA) of the surface redox reaction accompanied by the nondissociative substitutive adsorption of either product or reagent was generalized in [1] for the situa tion when an isotherm of a general kind describes the system [2]. It was shown that the main diagnostic cri teria of the LVA method given in [3][4][5][6][7][8][9][10] are invariant irrespectively of the isotherm kind and the number of active sites occupied by a particular particle.…”

Section: Introductionmentioning

confidence: 99%

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Linear voltammetry of the redox process involving coadsorption of reagents

Bobrinskaya

Vvedenskii

Krashchenko

2012

Prot Met Phys Chem Surf

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Under conditions of nondissociative coadsorption of reagents involved in the superficial redox reaction, the main criterial relations of the linear voltammetry method are found to be independent of the isotherm kind and the number of molecules of water or other surface active, but electrochemically indiffer ent, particles that are displaced from the electrode surface by adsorbate particles. The concentration depen dence of the parameters of the adsorption peak on the anodic voltammetric curve is discussed in detail, as is the relation between the parameters and both the isotherm kind and the change in the number of adsorption sites during the redox reaction.

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Section: Formulation Of the Problemmentioning

confidence: 98%

Section: Formulation Of the Problemmentioning

confidence: 99%

Section: Formulation Of the Problemmentioning

confidence: 99%

Section: Formulation Of the Problemmentioning

confidence: 99%