Matches in SemOpenAlex for { <https://semopenalex.org/work/W4280492730> ?p ?o ?g. }
- W4280492730 endingPage "053511" @default.
- W4280492730 startingPage "053511" @default.
- W4280492730 abstract "Organic compounds containing nitroxide radicals such as 4–hydroxy–2,2,6,6–tetramethylpiperidine–1–oxyl (4–hydroxy–TEMPO) are redox–active and are of interest for potential applications in redox flow batteries. The mechanisms governing charge–transfer reactions of such compounds are not well understood. Specifically, the anodic charge transfer coefficient ( α a ) corresponding to the electro–oxidation of 4–hydroxy–TEMPO in an aqueous medium is ∼0.9, i.e., α a deviates considerably from the expected value (0.5) for a symmetric single–step one–electron transfer redox reaction. In a previous publication ( J. Electrochem. Soc ., 2020 , 167, 143505), we have proposed a reaction mechanism to explain such asymmetric behavior by invoking adsorption–desorption processes. In the proposed mechanism, reversible oxidation of 4–hydroxy–TEMPO leads to the adsorption of the oxidation product, which then undergoes slow rate–limiting desorption from the electrode surface. In the present contribution, supporting evidence is provided for this mechanism. In situ surface–enhanced Raman spectroscopy combined with density functional theory simulations are employed to confirm the presence of surface–adsorbed species at a Au electrode during electro–oxidation of 4–hydroxy–TEMPO. Furthermore, we employ chronopotentiometry to track the gradual re–equilibration of the electrode–electrolyte interface following the electro–oxidation of 4–hydroxy–TEMPO. Analysis of the chronopotentiometry data further suggests the presence of adsorbed species, which were previously proposed and are now confirmed by direct spectroscopic evidence." @default.
- W4280492730 created "2022-05-22" @default.
- W4280492730 creator A5003053406 @default.
- W4280492730 creator A5013794190 @default.
- W4280492730 creator A5026728329 @default.
- W4280492730 creator A5053913966 @default.
- W4280492730 creator A5086782914 @default.
- W4280492730 creator A5087219659 @default.
- W4280492730 creator A5087875160 @default.
- W4280492730 creator A5089508808 @default.
- W4280492730 date "2022-05-01" @default.
- W4280492730 modified "2023-09-30" @default.
- W4280492730 title "Electro–Oxidation of Nitroxide Radicals: Adsorption–Mediated Charge Transfer Probed Using SERS and Potentiometry" @default.
- W4280492730 cites W1001417174 @default.
- W4280492730 cites W1546843241 @default.
- W4280492730 cites W1964714733 @default.
- W4280492730 cites W1967107441 @default.
- W4280492730 cites W1997725714 @default.
- W4280492730 cites W2008990858 @default.
- W4280492730 cites W2012113904 @default.
- W4280492730 cites W2015936561 @default.
- W4280492730 cites W2023271753 @default.
- W4280492730 cites W2025546807 @default.
- W4280492730 cites W2029836545 @default.
- W4280492730 cites W2040019047 @default.
- W4280492730 cites W2044024547 @default.
- W4280492730 cites W2048027338 @default.
- W4280492730 cites W2058363175 @default.
- W4280492730 cites W2071507718 @default.
- W4280492730 cites W2079435857 @default.
- W4280492730 cites W2080511631 @default.
- W4280492730 cites W2109833284 @default.
- W4280492730 cites W2115797520 @default.
- W4280492730 cites W2130384960 @default.
- W4280492730 cites W2186629838 @default.
- W4280492730 cites W2292984325 @default.
- W4280492730 cites W2305571017 @default.
- W4280492730 cites W2324726797 @default.
- W4280492730 cites W2339478249 @default.
- W4280492730 cites W2586572818 @default.
- W4280492730 cites W2800245903 @default.
- W4280492730 cites W2802747682 @default.
- W4280492730 cites W2808106653 @default.
- W4280492730 cites W2898374334 @default.
- W4280492730 cites W2946763641 @default.
- W4280492730 cites W2969914720 @default.
- W4280492730 cites W2971763914 @default.
- W4280492730 cites W3033792535 @default.
- W4280492730 cites W3037630500 @default.
- W4280492730 cites W3093980222 @default.
- W4280492730 cites W3106799250 @default.
- W4280492730 cites W3117141359 @default.
- W4280492730 cites W3128951680 @default.
- W4280492730 cites W3205929175 @default.
- W4280492730 doi "https://doi.org/10.1149/1945-7111/ac7082" @default.
- W4280492730 hasPublicationYear "2022" @default.
- W4280492730 type Work @default.
- W4280492730 citedByCount "2" @default.
- W4280492730 countsByYear W42804927302022 @default.
- W4280492730 countsByYear W42804927302023 @default.
- W4280492730 crossrefType "journal-article" @default.
- W4280492730 hasAuthorship W4280492730A5003053406 @default.
- W4280492730 hasAuthorship W4280492730A5013794190 @default.
- W4280492730 hasAuthorship W4280492730A5026728329 @default.
- W4280492730 hasAuthorship W4280492730A5053913966 @default.
- W4280492730 hasAuthorship W4280492730A5086782914 @default.
- W4280492730 hasAuthorship W4280492730A5087219659 @default.
- W4280492730 hasAuthorship W4280492730A5087875160 @default.
- W4280492730 hasAuthorship W4280492730A5089508808 @default.
- W4280492730 hasBestOaLocation W42804927301 @default.
- W4280492730 hasConcept C113196181 @default.
- W4280492730 hasConcept C123669783 @default.
- W4280492730 hasConcept C139066938 @default.
- W4280492730 hasConcept C147789679 @default.
- W4280492730 hasConcept C150394285 @default.
- W4280492730 hasConcept C15744967 @default.
- W4280492730 hasConcept C162711632 @default.
- W4280492730 hasConcept C17525397 @default.
- W4280492730 hasConcept C178790620 @default.
- W4280492730 hasConcept C179104552 @default.
- W4280492730 hasConcept C185592680 @default.
- W4280492730 hasConcept C2775884256 @default.
- W4280492730 hasConcept C52859227 @default.
- W4280492730 hasConcept C55904794 @default.
- W4280492730 hasConcept C68801617 @default.
- W4280492730 hasConcept C75473681 @default.
- W4280492730 hasConcept C77805123 @default.
- W4280492730 hasConceptScore W4280492730C113196181 @default.
- W4280492730 hasConceptScore W4280492730C123669783 @default.
- W4280492730 hasConceptScore W4280492730C139066938 @default.
- W4280492730 hasConceptScore W4280492730C147789679 @default.
- W4280492730 hasConceptScore W4280492730C150394285 @default.
- W4280492730 hasConceptScore W4280492730C15744967 @default.
- W4280492730 hasConceptScore W4280492730C162711632 @default.
- W4280492730 hasConceptScore W4280492730C17525397 @default.
- W4280492730 hasConceptScore W4280492730C178790620 @default.
- W4280492730 hasConceptScore W4280492730C179104552 @default.
- W4280492730 hasConceptScore W4280492730C185592680 @default.