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 - Journal Article
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
R&D Projects: GA AV ČR IAA4004002; GA AV ČR IBS5004107
Institutional research plan: CEZ:AV0Z5004920
Keywords : glassy carbon electrode * pyrolytic graphite electrode * mercury film electrode
Subject RIV: BO - Biophysics
Impact factor: 1.996, year: 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.
Permanent Link: http://hdl.handle.net/11104/0025266