2024-03-29T09:37:54Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/61202022-11-11T13:15:07Zcom_10259_3844com_10259_5086com_10259_2604col_10259_3845
A Flexible Platform of Electrochemically Functionalized Carbon Nanotubes for NADH Sensors
Heras Vidaurre, Aránzazu
Vulcano, Fabio
Garoz Ruiz, Jesús
Porcelli, Nicola
Terzi, Fabio
Colina Santamaría, Álvaro
Seeber, Renato
Zanardi, Chiara
Single-walled carbon nanotubes
Caffeic acid
Catechol
NADH oxidation
Electrocatalysis
Amperometric sensor
Voltabsorptometric sensor
Spectroelectrochemistry
Química analítica
Chemistry, Analytic
A flexible electrode system entirely constituted by single-walled carbon nanotubes
(SWCNTs) has been proposed as the sensor platform for -nicotinamide adenine dinucleotide
(NADH) detection. The performance of the device, in terms of potential at which the electrochemical
process takes place, significantly improves by electrochemical functionalization of the carbon-based
material with a molecule possessing an o-hydroquinone residue, namely caffeic acid. Both the
processes of SWCNT functionalization and NADH detection have been studied by combining
electrochemical and spectroelectrochemical experiments, in order to achieve direct evidence of the
electrode modification by the organic residues and to study the electrocatalytic activity of the resulting
material in respect to functional groups present at the electrode/solution interface. Electrochemical
measurements performed at the fixed potential of +0.30 V let us envision the possible use of the
device as an amperometric sensor for NADH detection. Spectroelectrochemistry also demonstrates
the effectiveness of the device in acting as a voltabsorptometric sensor for the detection of this same
analyte by exploiting this different transduction mechanism, potentially less prone to the possible
presence of interfering species.
FEDER and both the Spanish Ministerio de Economía y Competitividad (Grants CTQ2017-83935-R-AEI/FEDER-UE) and the Consejería de Educación -Junta de Castilla y León- (Grant BU297P18). Jesus Garoz-Ruiz thanks Ministerio de Economía y Competitividad for his postdoctoral contracts (CTQ2014-55583-R; CTQ2017-83935-R AEI/FEDER-UE). Fabio Vulcano thanks the ISOF institute of CNR for supporting his PhD Grant. Nicola Porcelli thanks Università di Modena e Reggio Emilia for supporting his stay at the University of Burgos.
2021-11-08T12:21:21Z
2021-11-08T12:21:21Z
2019-02
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
1424-8220
http://hdl.handle.net/10259/6120
10.3390/s19030518
eng
Sensors. 2019, V. 19, n. 3, 518
https://doi.org/10.3390/s19030518
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2017-83935-R/ES/ESPECTROELECTROQUIMICA RAMAN CUANTITATIVA
info:eu-repo/grantAgreement/MINECO//CTQ2014-55583-R/ES/ESPECTROELETROQUIMICA MULTIFUNCIONAL: DESARROLLO DE SENSORES PARA ANALISIS IN SITU
info:eu-repo/grantAgreement/Junta de Castilla y León//BU297P18
Atribución 4.0 Internacional
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
application/pdf
MDPI
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Hispana
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RIUBU. Repositorio Institucional de la Universidad de Burgos
http://hdl.handle.net/10259/6120