Quantification of Electrocatalytic Activity of Glassy Carbon Electrode
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F21%3A43923194" target="_blank" >RIV/60461373:22310/21:43923194 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0013468621004679?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0013468621004679?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.electacta.2021.138177" target="_blank" >10.1016/j.electacta.2021.138177</a>
Alternative languages
Result language
angličtina
Original language name
Quantification of Electrocatalytic Activity of Glassy Carbon Electrode
Original language description
Despite the fact that carbon represents one of the most important electrode materials today, an electrocatalysis at its surfaces is far from being understood. In the present work, a detailed investigation of electrocatalytic properties of well characterised glassy carbon (GC) surfaces prepared by defined electrochemical activation procedure was performed. In order to achieve this goal, standard rate constants of various redox couples used as probes were correlated with the information about the electrodes surface composition. In particular, the GC electrode surface was characterised by Raman spectroscopy, water contact angle, 9,10-phenanthrenequinone adsorption and X-ray photoelectron spectroscopy. Standard rate constants of Fe 3 + /2 + , V 3 + /2 + , Eu 3 + /2 + , TEMPO + / ? and [Fe(CN) 6 ] 3-/4- redox couples were determined by cyclic voltammetry and scanning electrochemical microscopy. Results confirmed the importance of C = O moiety as a catalytic site for Fe 3 + /2 + and possibly also V 3 + /2 + and TEMPO + / ? couples. Negatively charged oxygencontaining surface species were suggested as novel catalytic sites for Eu 3 + /2 + . An evidence was found that a redox process of 1,4-benzoquinone/hydroquinone is catalysed by the very same surface species. However, the electrocatalysis in this case seems to be influenced also by the adsorption of these compounds at the electrode. Standard rate constant of [Fe(CN) 6 ] 3-/4- , often used as a probe for electrochemical testing of electrode surfaces, could not be correlated to any of the considered surface species. @& nbsp;2021 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license ( http://creativecommons.org/licenses/by/4.0/ )
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
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Continuities
O - Projekt operacniho programu
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Electrochimica Acta
ISSN
0013-4686
e-ISSN
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Volume of the periodical
379
Issue of the periodical within the volume
May 2021
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
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UT code for WoS article
000638016200007
EID of the result in the Scopus database
2-s2.0-85103138122