Electrosorption of a modified electrode in the vicinity of phase transition: A Monte Carlo study

Gavilán-Arriazu, E. M.; Pinto, O. A.

doi:10.1016/j.apsusc.2017.10.051

Cited by 7 publications

(2 citation statements)

References 36 publications

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“…A similar criticism and concerns with regard to the serious problems related to electrosorption valency had been already formulated in [18]. The argumentation presented in reference [17] is thermodynamically straightforward and consistent, however, the term is still used in the literature, see [19][20][21][22][23][24][25][26]. Nevertheless, the self-contradictory character of the concept of electrosorption valency can also be demonstrated by using the elementary laws of electrochemistry, that is, without thermodynamic considerations [27,28].…”

Section: The Problem Of Electrosorption Valency and Partial Charge Trmentioning

confidence: 99%

Some Questionable Approaches in Interfacial Electrochemistry—The Charged State of Adsorbed Species and Their Involvement in Redox Processes

Ланг

2020

Electrochem

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On the basis of a survey on the relevant literature it can be stated that some views and approaches concerning the charged state of adsorbed species and the charge transfer processes occurring with them are far from being unambiguous even in some respect they contradict fundamental physical and physicochemical principles. The meaning of the electrosorption valency, the misleading formulation of the Gibbs adsorption equation, and the interpretation of redox processes occurring with adsorbed species, is discussed in detail. It has been concluded that although the electrosorption valency of an adsorbed species as usually defined is an extra-thermodynamic and self-contradictory concept, experimental determined formal partial charge numbers can be a useful tool for scientists investigating adsorption phenomena, since the observed deviation between its value and the charge number of the same species in the solution phase unequivocally indicates a non-simple mechanism of the adsorption process, which should be taken into account in theoretical interpretation of the experimental data. It has been emphasized that the evaluation of voltammetric curves obtained in the presence of adsorbed redox partners requires a cautious analysis of the accompanying chemical transformations. In the framework of a critical analysis it is demonstrated that probably one of the most important sources of the misinterpretations and misunderstandings is the inadequate approach to the concept of electrode charge. The possibility of a general and straightforward presentation of the Gibbs adsorption equation has also been discussed.

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Section: The Problem Of Electrosorption Valency and Partial Charge Trmentioning

confidence: 99%

Some Questionable Approaches in Interfacial Electrochemistry—The Charged State of Adsorbed Species and Their Involvement in Redox Processes

Ланг

2020

Electrochem

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“…13 In electrochemistry, to describe surface processes in electrodes, the lattice-gas model is the most widely used in Monte Carlo (MC) simulations, 14,15 finite element modeling 16,17 or digital simulations, [18][19][20] this last method consists of solving ordinary differential equations with discretized spatial coordinates. The electrodeposition process with modified surfaces has been analyzed using the MC technique, for example, in the critical regime of the ordered structure c (2 Â 2) 21 and in the deposition of binary mixtures. 22 On the other hand, great efforts have been made to obtain theoretical descriptions of deposition on homogeneous and heterogeneous surfaces.…”

Section: Introductionmentioning

confidence: 99%