期刊
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 672, 期 -, 页码 45-52出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2012.02.028
关键词
Asymmetric Marcus-Hush theory; Force constant differences; 2-Methyl-2-nitropropane electroreduction; Cyclooctatetraene electroreduction; Europium(III) electroreduction
资金
- EPSRC [EP/H002413/1]
- Fundacion SENECA [11989]
- St. John's College, Oxford
- Direccion General de Investigacion Cientifica y Tecnica [CTQ2009-13023]
- Engineering and Physical Sciences Research Council [EP/H002413/1] Funding Source: researchfish
- EPSRC [EP/H002413/1] Funding Source: UKRI
The asymmetric Marcus-Flush (MH) model for electrode kinetics is applied to the kinetic study of the electroreduction of 2-methyl-2-nitropropane in acetonitrile, cyclooctatetraene in dimethylsulfoxide and europium(III) in aqueous solution, using mercury microhemispheres as working electrodes. This kinetic model includes the possibility of the oxidative and reductive processes having different reorganization energies due to differences between the force constants of the electroactive species. For each redox couple, the response obtained in cyclic and square wave voltammetries can be fitted satisfactorily with the four-parameter asymmetric MH model. From the fitting of the voltammograms the values of the kinetic parameters are extracted and analyzed in terms of physical properties of the electroactive species. A comparison of the asymmetric model against the simpler, phenomenological Butler-Volmer (BV) approach is discussed, as well as a possible physical interpretation for the BV transfer coefficient. (C) 2012 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据