2024-03-29T13:07:09Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/49332022-05-20T13:23:26Zcom_10259_3844com_10259_5086com_10259_2604col_10259_3845
Repositorio Institucional de la Universidad de Burgos
author
Garoz Ruiz, Jesús
author
Heras Vidaurre, Aránzazu
author
Colina Santamaría, Álvaro
2018-09-12T11:38:43Z
2018-05
http://hdl.handle.net/10259/4933
A spectroelectrochemistry device capable of studying different regions of an electrode surface in a strictly simultaneous way is presented in this work. It is based on two reflection probes placed in a near-normal arrangement with respect to a working electrode surface, part of which has been deliberately modified. As expected, the electrochemical signal contains information related to the whole system, it being impossible to distinguish which behaviour corresponds to the unmodified and which to the modified part of the electrode. Spectroelectrochemistry provides an excellent solution because the reflection probes fully explain the electrochemical response, allowing deconvolution of the electrochemical behaviour from an optical point of view under exactly the same experimental conditions. To demonstrate the usefulness of this platform, a highly oriented pyrolytic graphite electrode is partially modified with commercially available carbon nanotubes or graphene, and the oxidation of dopamine at the different parts of the electrode is studied simultaneously. A remarkable decrease in the onset oxidation potential is observed at the modified surfaces compared to the bare electrode. This work highlights the advantages of spectroelectrochemistry for the characterization of materials and the comparison of electrode surfaces, laying the groundwork for novel experiments in which simultaneous measurement is a key factor.
eng
Attribution-NonCommercial-NoDerivatives 4.0 International
Spectroelectrochemistry
Reflection probe
Carbon nanotubes
Graphene
Dopamine
In situ technique
Simultaneous study of different regions of an electrode surface with a novel spectroelectrochemistry platform
info:eu-repo/semantics/article
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URL
https://riubu.ubu.es/bitstream/10259/4933/1/Garoz-ec_2018.pdf
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https://riubu.ubu.es/bitstream/10259/4933/6/EC2018_dual.pdf.txt
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EC2018_dual.pdf.txt