Preparation and Characterization of Glassy Carbon Monolithic Electrode for Electrochemical Analysis
Abstract
Carbon monoliths have the advantage of being conductive materials and were
therefore also investigated as electrode materials for electrochemical analysis. A
glassy carbon monolithic electrodes (GCME) has been successfully prepared using an
adapted method of Liang et al. [1]. The sample has a high specific surface area and a
large pore volume. Electrochemical analysis indicated that it has fine electrochemical
double-layer performance.
Electrochemical measurements obtained on the anodised glassy carbon
monolithic electrodes (GCME) showed a more reproducible surface relative to the
polished GCME. The electrode was investigated using cyclic voltammetry following
electrochemically induced oxidation to impart hydrophilicity. The surface oxidation
was studied to generate oxygen-containing surface functional groups. The
electrochemical oxidation of GCME was carried using 2M NaOH and 1 M H2SO4,
respectively. Cyclic voltammetry was investigated using a solution containing
K3Fe(CN)6 and KCl between -0.2 and +1.1 V. The scan rate used for the above
characterisations was 20 – 100 mV/s.
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Copyright (c) 2015 Hassan Hadi Ali Al-Alak
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