Thermodynamic driving force effects in the oxygen reduction catalyzed by a metal-free porphyrin

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F12%3A00380420" target="_blank" >RIV/61388955:_____/12:00380420 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.electacta.2012.03.129" target="_blank" >http://dx.doi.org/10.1016/j.electacta.2012.03.129</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.electacta.2012.03.129" target="_blank" >10.1016/j.electacta.2012.03.129</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermodynamic driving force effects in the oxygen reduction catalyzed by a metal-free porphyrin

Popis výsledku v původním jazyce

Cyclic voltammetry and the stopped-flow kinetic measurements are used to investigate the thermodynamic driving force effects in the molecular oxygen reduction with the methyl (Me)-substituted ferrocenes MenFc (n = 0, 2, 4, 6, 8, 10) at the polarized water|1,2-dichloroethane (DCE) interface and in the homogeneous DCE phase, which is catalyzed by 5,10,15,20-meso-tetraphenylporphyrin (H2TPP) dissolved in DCE. Ferrocene derivatives are characterized by their reversible half-wave potentials View the MathML source which are inferred from cyclic voltammetric data, and by the coresponding formal potentials E0(SHE,o) referenced to the standard hydrogen electrode in DCE. It is shown that the reduction of the activated oxygen with MenFc is the rate-determining step in both electrochemical and chemical catalytic cycles. Plots of the logarithm of the rate constant of the catalyzed, non-catalyzed and electrocatalyzed oxygen reduction vs. the reversible half-wave potential for the MenFc+/MenFc redox

Název v anglickém jazyce

Thermodynamic driving force effects in the oxygen reduction catalyzed by a metal-free porphyrin

Popis výsledku anglicky

Cyclic voltammetry and the stopped-flow kinetic measurements are used to investigate the thermodynamic driving force effects in the molecular oxygen reduction with the methyl (Me)-substituted ferrocenes MenFc (n = 0, 2, 4, 6, 8, 10) at the polarized water|1,2-dichloroethane (DCE) interface and in the homogeneous DCE phase, which is catalyzed by 5,10,15,20-meso-tetraphenylporphyrin (H2TPP) dissolved in DCE. Ferrocene derivatives are characterized by their reversible half-wave potentials View the MathML source which are inferred from cyclic voltammetric data, and by the coresponding formal potentials E0(SHE,o) referenced to the standard hydrogen electrode in DCE. It is shown that the reduction of the activated oxygen with MenFc is the rate-determining step in both electrochemical and chemical catalytic cycles. Plots of the logarithm of the rate constant of the catalyzed, non-catalyzed and electrocatalyzed oxygen reduction vs. the reversible half-wave potential for the MenFc+/MenFc redox

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CG - Elektrochemie

OECD FORD obor

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Projekt

<a href="/cs/project/GAP208%2F11%2F0697" target="_blank" >GAP208/11/0697: Katalýza redukce kyslíku bezkovovými porfyriny na elektrochemicky polarizovaných kapalných rozhraních</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Electrochimica acta

ISSN

0013-4686

e-ISSN

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Svazek periodika

82

Číslo periodika v rámci svazku

SI

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

457-462

Kód UT WoS článku

000311873800066

EID výsledku v databázi Scopus

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