Learning About Edge Effects and Ultramicroelectrodes in Electrochemistry: Synergy Between Experiments and Simulations

Gimeno, Magalí; Zanotto, Franco M.

doi:10.21577/0100-4042.20170587

Cited by 3 publications

(4 citation statements)

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“…All those who intend to work in the area of traditional electrochemical experiments and investigations should be better educated about the existing computer-aided methods and techniques and about benefits of computer experiments or simulations. This postulate is consistent with the earlier observation [24] of shortcomings in these aspects of the education of electrochemists. But in the first place, I would suggest creating new kinds of interdisciplinary studies, with the aim of educating interdisciplinary specialists.…”

supporting

confidence: 93%

While educating electrochemists, do not forget we live in a computer era

Bieniasz

2023

J Solid State Electrochem

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The appearance of computers has led to considerable changes in research practices of natural sciences, including electrochemistry. The current status of the computerization in electrochemistry is briefly discussed, with the conclusion that the progress in this area is not as fast as in other natural science disciplines. Some postulates are formulated, referring to the education of young generations of electrochemists, that might bring improvements.

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supporting

confidence: 93%

While educating electrochemists, do not forget we live in a computer era

Bieniasz

2023

J Solid State Electrochem

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“…At high v and/or high θ , the shape of the voltammograms corresponds to a radial diffusion profile. For intermediate situations, the electrochemical signal is the result of the combination of radial and planar components (see Figure S7, Supporting Information for details). , …”

Section: Resultsmentioning

confidence: 99%

“…For intermediate situations, the electrochemical signal is the result of the combination of radial and planar components (see Figure S7, Supporting Information for details). 25,60 According to this model, the shape of the current−potential profiles depends on the fraction of blocked area θ (defined as…”

Section: ■ Experimental Methodsmentioning

confidence: 99%

Molecular Transport through TiO₂ Mesoporous Thin Films: Correlation with the Partially Blocked Electrode Model

et al. 2021

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Mesoporous titania thin film (MTTF)-based electrodes are vastly popular due to their versatility and their potential use as sensors, catalysts, and photovoltaic devices. For these applications, understanding of diffusion through the pores along the thickness of the films is critical. Cyclic voltammetry with the use of a freely diffusing redox probe is a promising and simple strategy for the characterization of this kind of modified electrodes. However, the application of a mesoporous insulating material on a flat electrode greatly modifies the diffusion regimes in the vicinity of the reaction zone. This makes the use of traditional tools for data interpretation, such as the Randles−S ̌evcǐ ́k equation, insufficient. In this work, the application of a model previously developed for partially covered electrodes (Matsuda et al., J. Electroanal. Chem. 1979, 101 (1), 29−38) is proposed to interpret experimental results. An excellent agreement between experimental and simulated voltammograms was achieved for MTTFs with different pore sizes and pore arrays. This analysis can be attributed to a lack of uniformity along the films related to differences in pore-to-pore connectivity within their thickness. At the same time, it is revealed that pore and neck sizes are determinant for diffusion within these materials. Thus, two dimensions govern the electrochemical results: nanopore sizes and arrays and microregions with different connectivities along the MTTF.

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“…Figure S7. Concentrations profiles and voltammograms obtained by means COMSOL software[3] for two extreme cases: planar (center) and radial (right); and for a case in between (left).…”

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confidence: 99%

Molecular Transport through TiO2 Mesoporous Thin Films: Correlation with the Partially Blocked Electrode Model

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Learning About Edge Effects and Ultramicroelectrodes in Electrochemistry: Synergy Between Experiments and Simulations

Cited by 3 publications

References 1 publication

While educating electrochemists, do not forget we live in a computer era

While educating electrochemists, do not forget we live in a computer era

Molecular Transport through TiO₂ Mesoporous Thin Films: Correlation with the Partially Blocked Electrode Model

Molecular Transport through TiO2 Mesoporous Thin Films: Correlation with the Partially Blocked Electrode Model

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