On the adsorption and kinetics of phase transients of adenosine at the different carbon electrodes modified with a mercury layer

0127042 - BFU-R 20033130 RIV GB eng J - Článek v odborném periodiku
Hasoň, Stanislav - Simonaho, S.P. - Silvennoinen, R. - Vetterl, Vladimír
On the adsorption and kinetics of phase transients of adenosine at the different carbon electrodes modified with a mercury layer.
Electrochimica acta. Roč. 48, č. 6 (2003), s. 651-668. ISSN 0013-4686. E-ISSN 1873-3859
Grant CEP: GA AV ČR IAA4004002; GA AV ČR IBS5004107
Výzkumný záměr: CEZ:AV0Z5004920
Klíčová slova: glassy carbon electrode * pyrolytic graphite electrode * mercury film electrode
Kód oboru RIV: BO - Biofyzika
Impakt faktor: 1.996, rok: 2003

Optical roughness of a pyrolytic graphite electrode with basal (PGEb) and edge orientation (PGEe), a glassy carbon electrode (GCE), and the same electrodes modified with mercury (MFE) was studied by an optical diffractive element (DOE) based sensor. Electrochemical characterisation of these electrodes used was performed by cyclic voltammetry (CV) and capacitance measurements (C-E curves and electrochemical impedance spectroscopy, EIS). The kinetics of phase transients of adenosine adsorbed on PGEb, and GCE modified with mercury layer of different thicknesses (thickness was changed from 0.02 to 2 mum) was studied by chronoamperometry (j-t curves) and capacitance measurements (C-E curves). In acidic (pH 5) solution adenosine forms two different two-dimensional (2D) physisorbed condensed layers on the MFE.
Trvalý link: http://hdl.handle.net/11104/0025266