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Título
Carbon paste electrodes made from different carbonaceous materials: application in the study of antioxidants
Autor
Año del Documento
2011
Editorial
MDPI
Descripción
Producción Científica
Documento Fuente
Sensors, 2011, vol. 11, n. 2. p. 1328-1344
Resumen
This work describes the sensing properties of carbon paste electrodes (CPEs) prepared from three different types of carbonaceous materials: graphite, carbon microspheres and carbon nanotubes. The electrochemical responses towards antioxidants including vanillic acid, catechol, gallic acid, L-ascorbic acid and L-glutathione have been analyzed and compared. It has been demonstrated that the electrodes based on carbon microspheres show the best performances in terms of kinetics and stability, whereas G-CPEs presented the smallest detection limit for all the antioxidants analyzed. An array of electrodes has been constructed using the three types of electrodes. As demonstrated by means of Principal Component Analysis, the system is able to discriminate among antioxidants as a function of their chemical structure and reactivity.
Palabras Clave
Carbon paste electrode
Electrodos de pasta de carbono
Carbonaceous materials
Materiales carbonáceos
Carbon nanotubes
Nanotubos de carbono
Cyclic voltammetry
Voltametría cíclica
ISSN
1424-8220
Revisión por pares
SI
Patrocinador
Ministerio de Ciencia, Innovación y Universidades (grant AGL2009-12660/ALI)
Version del Editor
Propietario de los Derechos
© 2011 MDPI
Idioma
eng
Derechos
openAccess
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