Print Email Facebook Twitter Carbon-based Composite Electrodes: Preparation, Characterization and Application in Electroanalysis Title Carbon-based Composite Electrodes: Preparation, Characterization and Application in Electroanalysis Author Corb, I. Manea, F. Radovan, C. Pop, A. Burtica, G. Malchev, P.G. Picken, S.J. Schoonman, J. Faculty Applied Sciences Department ChemE/Chemical Engineering Date 2007-11-05 Abstract Electrodes based on carbon, i.e., expanded graphite (20%, wt.)-epoxy composite (20EG-Epoxy) and expanded graphite (20%, wt.)-polystyrene composite (20EG-PS) have been prepared, characterized using scanning electron microscopy (SEM) and cyclic voltammetry (CV), and tested as anodic sensors. The electrodes exhibited good mechanical resistance and low electrical resistances. Scan rate dependent cyclic voltammetry responses at 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 in accordance with those for a random array of microelectrodes. The voltammetric and chronoamperometric detection results of TU in tap water samples, without a supplementary addition of supporting electrolyte, at 20EG-Epoxy electrode proved its use for direct analysis of environmental samples. Subject carbon-based composite electrodemicroelectrode array behaviothioureaelectroanalysis To reference this document use: http://resolver.tudelft.nl/uuid:0fdb47d8-2140-4abb-8325-9b59c1cab2b4 DOI https://doi.org/10.3390/s7112626 Publisher MDPI AG ISSN 1424-8220 Source Sensors, 7 (11), 2007 Part of collection Institutional Repository Document type journal article Rights (c) 2007 The Author(s) Files PDF Malchev_2007.pdf 272.19 KB Close viewer /islandora/object/uuid:0fdb47d8-2140-4abb-8325-9b59c1cab2b4/datastream/OBJ/view