Reproducible reduction signal of organic hydroperoxides at an in situ electrodeposited iron microelectrode, due to the reconstitution of the active surface of the electrode

Baron, Ronan

doi:10.1016/j.jelechem.2004.10.023

Cited by 6 publications

(1 citation statement)

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“…The characteristic time of each of the techniques used should be estimated and experimental parameters such as the radius of the microelectrodes or the scan rate for the cyclic voltammetry at macroelectrode need to be chosen in such a way that the two techniques used exhibit similar characteristic times. While those techniques are used extensively, it is sometimes necessary, however, to perform a large number of measurements to minimize the error in the calculated parameters 31, 36, 37…”

Section: Procedures and Methods For The Quantitative Analysis Of The mentioning

confidence: 99%

Electrochemistry in tetrahydrofuran and at low temperature: protocol, procedures and methods

Baron

Kershaw

Donohoe

et al. 2009

J of Physical Organic Chem

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This review describes the protocol, procedures and methods for electrochemical studies in THF and at low temperature that have been developed in the course of the last 5 years in our laboratory. Electrochemical studies in THF benefit from a large accessible potential window. In practice, it is however necessary to avoid the presence of humidity in the electrochemical cell. A specific reference electrode had to be designed for those measurements. Microelectrodes, the voltammetric response of which is negligibly affected by the resistivity of the medium, were preferred to macroelectrodes. Moreover, a methodology has been developed for the quantitative analysis of both voltammetric and chronoamperometric curves obtained for the microelectrodes. The fitting of chronoamperometric measurements using the Shoup and Szabo's expression allows us to estimate the diffusion coefficient of the substrate. The modelling of the cyclic voltammograms measured over a large range of scan rates allows the confirmation of the diffusion coefficient of the substrate D A , the determination of the diffusion coefficient of the electrogenerated molecule D B , of the formal potential E 0 f , of the transfer coefficient a and of the standard heterogeneous rate constant for the electron transfer k 0 . Typically, systems are investigated at temperatures ranging from room temperature to 192 K. Parameters obtained at various temperatures are used to extract, through Arrhenius plots, the activation energies both for the diffusion coefficient E A (D) and for the electron transfer reaction E A (k 0 ).

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Section: Procedures and Methods For The Quantitative Analysis Of The mentioning

confidence: 99%