Počet záznamů: 1
Pencil graphite electrodes for in-situ spectroelectrochemical sensing of reaction intermediates and products in organic solvents
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SYSNO ASEP 0582989 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Pencil graphite electrodes for in-situ spectroelectrochemical sensing of reaction intermediates and products in organic solvents Tvůrce(i) Vaněčková, Eva (UFCH-W) SAI, ORCID
Hrdlička, Vojtěch (UFCH-W) ORCID, RID, SAI
Šebera, Jakub (UFCH-W) ORCID, RID
Hromadová, Magdaléna (UFCH-W) RID, ORCID, SAI
Kocábová, Jana (UFCH-W) RID
Sebechlebská, Táňa (UFCH-W) SAI, ORCID
Kolivoška, Viliam (UFCH-W) RID, ORCIDČíslo článku 342350 Zdroj.dok. Analytica Chimica Acta. - : Elsevier - ISSN 0003-2670
Roč. 1296, APR 2024 (2024)Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova spectroelectrochemistry ; charge transfer ; cyclic voltammetry Vědní obor RIV CG - Elektrochemie Obor OECD Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis) CEP GA21-13458S GA ČR - Grantová agentura ČR GA23-07292S GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UFCH-W - RVO:61388955 UT WOS 001185265400001 EID SCOPUS 85185194979 DOI 10.1016/j.aca.2024.342350 Anotace Background
Spectroelectrochemistry (SEC) is a valuable analytical tool providing insights to reaction mechanisms and the structure of species involved in charge transfer reactions. Most of commercial SEC setups are based on platinum working electrodes where the adsorption of species involved in reactions often complicates their analysis.
Results
In this work, we employ an array of pencil graphite rods as an optically transparent working electrode in a custom-made air-tight thin-layer cell suitable for the SEC analysis performed here in acetonitrile as a representative non-aqueous solvent. The functionality of the device was demonstrated by UV–Vis SEC sensing of charge transfer reactions of ruthenium acetylacetonate, ferrocene and ethylviologen dibromide redox probes performed employing the cyclic voltammetry. The SEC response obtained for all three probes confirmed no adsorption and the absence of oxygen in the cell. Furthermore, we have developed and utilized finite element method numerical simulations considering charge transfer reactions coupled with the diffusional mass transport to model the cyclic voltammetric response and the reaction conversion in the thin-layer SEC cell.
Significance
Our work paves the way for easy-to-assemble customized air-tight adsorption-free SEC devices with the manufacturing costs well below those of commercially available platforms. Developed computational approaches have the predictive power for optimizing reaction conditions and the geometry of the SEC cell.Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2025 Elektronická adresa https://hdl.handle.net/11104/0351017
Počet záznamů: 1