2024-03-19T11:11:23Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/49432021-11-10T09:38:18Zcom_10259_3844com_10259_5086com_10259_2604col_10259_3845
Garoz Ruiz, Jesús
226
500
Guillen Posteguillo, Carlos
268
500
Heras, Aránzazu
273
500
Colina, Álvaro
122
500
2018-09-12T11:40:48Z
2018-01
2020-02
1388-2481
http://hdl.handle.net/10259/4943
10.1016/j.elecom.2017.11.001
UV–Vis absorption thin-layer spectroelectrochemistry greatly contributes to the assessment of parameters of electron-transfer reactions by providing electrochemical and spectroscopic information obtained simultaneously in a confined space around the working electrode. In this work we present an ingenious modification of a spectroelectrochemistry device based on carbon nanotubes and bare optical fibers to perform UV–Vis absorption thin-layer spectroelectrochemistry measurements. The working and counter electrodes are made of carbon nanotubes filtered and press-transferred onto a flat support where a painted silver line acts as pseudo-reference electrode. To perform high sensitivity measurements, two bare optical fibers are fixed to the support in a parallel arrangement. In a novel development, a quartz plate is placed on top of the bare optical fibers in order to create a thin layer whose thickness is reproducibly controlled by the diameter of the optical fibers. This methodology is also successfully applied using commercial screen-printed electrodes. Three different electroactive compounds, ferrocenemethanol, o-tolidine and [Ru(bpy)3]2 +, are studied and good results are obtained. As demonstrated below, these long optical path UV–Vis absorption thin-layer spectroelectrochemistry cells considerably reduce the complexity associated with this type of devices, eliminating one of the major disadvantages of this technique and making it much more accessible to the scientific community.
Ministerio de Economía y Competitividad (CTQ2014-55583-R, CTQ2014-61914-EXP, CTQ2015-71955-REDT) and Junta de Castilla y León (BU033-U16)
Ministerio de Economía y Competitividad (CTQ2014-55583-R, CTQ2014-61914-EXP, CTQ2015-71955-REDT) and Junta de Castilla y León (BU033-U16)
application/pdf
eng
Elsevier
Electrochemistry Communications. 2018,
V. 86, p. 12-16
https://doi.org/10.1016/j.elecom.2017.11.001
info:eu-repo/grantAgreement/MINECO/CTQ2014-55583-R
info:eu-repo/grantAgreement/MINECO/CTQ2014-61914-EXP
info:eu-repo/grantAgreement/MINECO/CTQ2015-71955-REDT
info:eu-repo/grantAgreement/JCyL/BU033-U16
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Thin-layer
Spectroelectrochemistry
Bare optical fibers
Carbon nanotubes
Screen-printed electrodes
Química analítica
Chemistry, Analytic
Simplifying the assessment of parameters of electron-transfer reactions by using easy-to-use thin-layer spectroelectrochemistry devices
info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
CC-LICENSE
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TEXT
EC2018_Thin_Layer.pdf.txt
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Garoz-ec_2018.pdf.txt
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10259/4943
oai:riubu.ubu.es:10259/4943
2021-11-10 10:38:18.52
Repositorio Institucional de la Universidad de Burgos
bubrep@ubu.es
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