<i>In Situ</i>and<i>Ex Situ</i>Electrochemical Measurements: Spectroelectrochemistry and Atomic Force Microscopy

Šurca, Angelja Kjara; Rodošek, Mirjana; Kreta, Ahmed; Mihelčič, Mohor; Gaberšček, Miran

doi:10.1002/9783527807130.ch19

Cited by 7 publications

(4 citation statements)

References 122 publications

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“…(RA IR) SPECTROSCOPY Reflection-absorption IR spectroscopy under near grazing conditions is commonly used to investigate thin films on reflecting substrates. The underlying theoretical background is thoroughly described and can be found elsewhere [19,20]. Herein, the practical applicability of this technique is considered, and a schematic presentation of the measurement is depicted in Fig.…”

Section: Near Grazing Incidence Angle (Ngia) Reflection-absorption In...mentioning

confidence: 99%

“…2). The incidence beam is P-polarized, which means that only those vibrations, whose dipole moment vibrates perpendicular to the bronze surface appear in the spectra [19,20]. Bands in RA IR spectra appear as so-called longitudinal optical (LO) modes, the wavenumbers of which are somewhat shifted relative to the transversal optical (TO) modes (which usually appear in transmittance IR spectra).…”

Section: Near Grazing Incidence Angle (Ngia) Reflection-absorption In...mentioning

confidence: 99%

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Electrochemistry and vibrational spectroscopy in investigation of protective coatings for bronze artworks

Surca,

Mihelčič

2023

Proceedings of the 2022 IMEKO TC4 International Conference on Metrology for Archaeology and Cultural Heritage

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Herein are discussed the possibilities of how to exploit vibrational spectroscopic and electrochemical techniques in the studies of protective coatings for bronze artworks. Protective coatings for bronze 85,555 are prepared on the basis of polyurethanes or fluoropolymers. Reflectionabsorption infrared spectroscopy under near grazing conditions is described as a powerful tool for studying the bronze surfaces when exposed to various conditions (solutions, strippers, temperature). Electrochemical techniques, especially the potentiodynamic polarization technique, are very powerful in the evaluation of protective coatings. The combination of electrochemical and spectroscopic techniques enables the tracking of changes in the protective coating that occur with an increase in the anodic potential. This is an accelerated test and similar changes are expected to occur in the protective coatings with time, i.e., exposure to atmospheric conditions (rain, humidity …). Various solutions were also tested as strippers to evaluate the removability of the coatings.

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Section: Near Grazing Incidence Angle (Ngia) Reflection-absorption In...mentioning

confidence: 99%

Section: Near Grazing Incidence Angle (Ngia) Reflection-absorption In...mentioning

confidence: 99%

Electrochemistry and vibrational spectroscopy in investigation of protective coatings for bronze artworks

Surca,

Mihelčič

2023

Proceedings of the 2022 IMEKO TC4 International Conference on Metrology for Archaeology and Cultural Heritage

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“…An atomic force microscope (AFM) is one of the scanning probe techniques. In contrast to electron microscopes, an AFM is capable of working in ambient [17,18], liquids [19][20][21][22][23][24][25],…”

Section: Introductionmentioning

confidence: 99%

Unbundling SWCNT Mechanically via Nanomanipulation Using AFM

Kreta,

Swillam,

Guirguis

et al. 2023

Asec 2023

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“…Recent advances in the theoretical concepts on electrocatalysis through computational methods such as density functional theory (DFT) calculations and molecular modeling has led to efficient screening of the electrocatalyst (Cao et al, 2013;Eslamibidgoli et al, 2016). On the other hand, sophisticated in-situ techniques for online monitoring of electrode-electrolyte interface by combining the electro-analytical tools with the specially designed spectroscopic, microscopic and chromatographic techniques has led to the identification of the compositional, structural/morphological deviations and the intermediates or products formed during the course of the electrochemical reactions (Bandarenka et al, 2014;Ye et al, 2016;Surca et al, 2017). These hyphenated techniques can provide valid experimental substantiation to tackle central issues in catalysis: (a) identification of active sites; (b) geometrical configuration of the reactants and the intermediates on the surface of the catalysts; (c) adsorption and desorption energies of reactants and intermediates; (d) reaction pathways; (e) selectivity toward specific product; (f) local pH at electrode-electrolyte interface in the case of aqueous electrolyte; (g) effect of electrolyte; and (h) stability of the electrocatalyst (Dahn and Mao, 1999;Christensen and Hamnett, 2000;Li et al, 2012;Handoko et al, 2018;Narayanan et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

In-situ Spectroscopic Techniques as Critical Evaluation Tools for Electrochemical Carbon dioxide Reduction: A Mini Review

2020

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Electrocatalysis plays a crucial role in modern electrochemical energy conversion technologies as a greener replacement for conventional fossil fuel-based systems. Catalysts employed for electrochemical conversion reactions are expected to be cheaper, durable, and have a balance of active centers (for absorption of the reactants, intermediates formed during the reactions), porous, and electrically conducting material to facilitate the flow of electrons for real-time applications. Spectroscopic and microscopic studies on the electrode-electrolyte interface may lead to better understanding of the structural and compositional deviations occurring during the course of electrochemical reaction. Researchers have put significant efforts in the past decade toward understanding the mechanistic details of electrochemical reactions which resulted in hyphenation of electrochemical-spectroscopic/microscopic techniques. The hyphenation of diverse electrochemical and conventional microscopic, spectroscopic, and chromatographic techniques, in addition to the elementary pre-screening of electrocatalysts using computational methods, have gained deeper understanding of the electrode-electrolyte interface in terms of activity, selectivity, and durability throughout the reaction process. The focus of this mini review is to summarize the hyphenated electrochemical and non-electrochemical techniques as critical evaluation tools for electrocatalysts in the CO 2 reduction reaction.

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In SituandEx SituElectrochemical Measurements: Spectroelectrochemistry and Atomic Force Microscopy

Cited by 7 publications

References 122 publications

Electrochemistry and vibrational spectroscopy in investigation of protective coatings for bronze artworks

Electrochemistry and vibrational spectroscopy in investigation of protective coatings for bronze artworks

Unbundling SWCNT Mechanically via Nanomanipulation Using AFM

In-situ Spectroscopic Techniques as Critical Evaluation Tools for Electrochemical Carbon dioxide Reduction: A Mini Review

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