An in situ microscopic spectroelectrochemical study of a three-phase electrode where an ion transfer at the water|nitrobenzene interface is coupled to an electron transfer at the interface ITO|nitrobenzene (CROSBI ID 105362)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Komorsky-Lovrić, Šebojka ; Mirčeski, Valentin ; Kabbe, Christian ; Scholz, Fritz
engleski
An in situ microscopic spectroelectrochemical study of a three-phase electrode where an ion transfer at the water|nitrobenzene interface is coupled to an electron transfer at the interface ITO|nitrobenzene
The coupled electron and ion transfer was studied at a three-phase arrangement where decamethylferrocene was dissolved in a droplet of nitrobenzene that was sandwiched between an optically transparent ITO electrode and a glass plate. The sandwiched droplet was surrounded by an aqueous electrolyte solution in which the auxiliary and the reference electrodes were positioned. The oxidation of decamethylferrocene was followed by in situ spectroscopy with the help of a spectrometer interfaced to an optical microscope. The fast progression of the reaction starting at the three-phase junction and advancing towards the middle of the droplet is explained on the basis of a simplified model that assumes a progressing activation of the working electrode | nitrobenzene interface due to the ingress of transferred anions and decrease of ohmic resistance inside the nitrobenzene phase.
three-phase junction ; voltammetry ; ion transfer ; electron transfer
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Podaci o izdanju
566
2004.
371-377
objavljeno
1572-6657
1873-2569
10.1016/j.jelechem.2003.11.048