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Updated: Feb 23, 2026

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications
Published on: June 21, 2017
Carbon-based Composite Electrodes: Preparation, Characterization and Application in Electroanalysis
Ioana Corb1, Florica Manea2, Ciprian Radovan3
1"Politehnica" University of Timisoara, P-ta Victoriei, nr.2, 300006, Timisoara, Romania. ioana.corb@chim.upt.ro.
Abstract:
Electrodes based on carbon, i.e., expanded graphite (20%, wt.)-epoxy composite(20EG-Epoxy) and expanded graphite (20%, wt.)-polystyrene composite (20EG-PS) havebeen prepared, characterized using scanning electron microscopy (SEM) and cyclicvoltammetry (CV), and tested as anodic sensors. The electrodes exhibited good mechanicalresistance and low electrical resistances. Scan rate dependent cyclic voltammetry responsesat 20EG-Epoxy and 20EG-PS composite electrodes, which were exemplified for thiourea(TU), a toxic sulphur organic compound selected as testing target analyte in 0.1 M Na₂SO₄ supporting electrolyte, were investigated. The obtained voltammetric data were inaccordance with those for a random array of microelectrodes. The voltammetric andchronoamperometric detection results of TU in tap water samples, without a supplementaryaddition of supporting electrolyte, at 20EG-Epoxy electrode proved its use for directanalysis of environmental samples.
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