A non-enzymatic ethanol sensor based on a nanostructured catalytic disposable electrode
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Título: | A non-enzymatic ethanol sensor based on a nanostructured catalytic disposable electrode |
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Autor/es: | Neves, Marta M. Pereira Silva | González-García, M. Begoña | Bobes-Limenes, Pablo | Pérez-Junquera, Alejandro | Hernández-Santos, David | Vidal-Iglesias, Francisco J. | Solla-Gullón, José | Fanjul-Bolado, Pablo |
Grupo/s de investigación o GITE: | Electroquímica de Superficies | Electroquímica Aplicada y Electrocatálisis |
Centro, Departamento o Servicio: | Universidad de Alicante. Instituto Universitario de Electroquímica |
Palabras clave: | Electrocatalytic | Detection of ethanol | Nanostructured | Screen-printed carbon electrodes |
Área/s de conocimiento: | Química Física |
Fecha de publicación: | 4-ago-2017 |
Editor: | Royal Society of Chemistry |
Cita bibliográfica: | Analytical Methods. 2017, 9: 5108-5114. doi:10.1039/C7AY01078H |
Resumen: | Herein, a simple and fast method for the electrocatalytic detection of ethanol using disposable nanostructured screen-printed carbon electrodes (SPCEs) is presented for the first time. Platinum nanoparticles (PtNPs), prepared in the presence of citrate and later purified and dispersed in ultrapure water, were employed in the modification of the SPCEs (SPCE-PtNPs). The synthetized nanoparticles and the catalytic nanostructured solid surface were characterized with transmission electron microscopy (TEM) and with scanning electron microscopy (SEM), respectively. Both systems were also characterized using voltammetric techniques. Finally, the PtNPs modified SPCEs were employed for the electro-oxidation of ethanol in an alkaline medium using portable instrumentation. The electrochemical results revealed that PtNPs can effectively enhance the electron transfer between the analyte of interest and the electrode. The content of ethanol was assayed in real samples (alcoholic beverages) revealing an accurate performance. Additionally, a stability study of the nanostructured surface was carried out. The results obtained corroborate the promising catalytic activity of PtNPs in ethanol detection using disposable, cost-effective and miniaturized sensing devices. |
Patrocinador/es: | José Solla-Gullón acknowledges financial support from VITC (Vicerrectorado de Investigación y Transferencia de Conocimiento) of the University of Alicante. |
URI: | http://hdl.handle.net/10045/69470 |
ISSN: | 1759-9660 (Print) | 1759-9679 (Online) |
DOI: | 10.1039/C7AY01078H |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © The Royal Society of Chemistry 2017 |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1039/C7AY01078H |
Aparece en las colecciones: | INV - EQSUP - Artículos de Revistas INV - LEQA - Artículos de Revistas |
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