2026-05-24T05:31:22Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/49332022-05-20T13:23:26Zcom_10259_3844com_10259_5086com_10259_2604col_10259_3845

Garoz Ruiz, Jesús 226 500 Heras Vidaurre, Aránzazu 273 500 Colina Santamaría, Álvaro 122 500 2018-09-12T11:38:43Z 2018-05 2020-06 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. Ministerio de Economía y Competitividad (CTQ2014-55583-R, CTQ2015-71955-REDT, CTQ2017-83935-R) and Junta de Castilla y León (BU033-U16) application/pdf eng Elsevier Electrochemistry Communications. 2018 V. 90, p. 73-77 https://doi.org/10.1016/j.elecom.2018.04.006 info:eu-repo/grantAgreement/MINECO/CTQ2014-55583-R info:eu-repo/grantAgreement/MINECO/ CTQ2015-71955-REDT info:eu-repo/grantAgreement/MINECO/CTQ2017-83935-R 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 Spectroelectrochemistry Reflection probe Carbon nanotubes Graphene Dopamine In situ technique Química analítica Chemistry, Analytic Simultaneous study of different regions of an electrode surface with a novel spectroelectrochemistry platform info:eu-repo/semantics/article info:eu-repo/semantics/submittedVersion CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 805 https://riubu.ubu.es/bitstream/10259/4933/8/license_rdf 4460e5956bc1d1639be9ae6146a50347 MD5 8 THUMBNAIL EC2018_dual.pdf.jpg EC2018_dual.pdf.jpg IM Thumbnail image/jpeg 3534 https://riubu.ubu.es/bitstream/10259/4933/7/EC2018_dual.pdf.jpg b45952bdd19e48aed2c06bb3ccfa60e6 MD5 7 Garoz-ec_2018.pdf.jpg Garoz-ec_2018.pdf.jpg IM Thumbnail image/jpeg 3534 https://riubu.ubu.es/bitstream/10259/4933/9/Garoz-ec_2018.pdf.jpg b45952bdd19e48aed2c06bb3ccfa60e6 MD5 9 ORIGINAL Garoz-ec_2018.pdf Garoz-ec_2018.pdf application/pdf 476672 https://riubu.ubu.es/bitstream/10259/4933/1/Garoz-ec_2018.pdf be450fab010ad80dc712e499a6a3c96b MD5 1 LICENSE license.txt license.txt text/plain; charset=utf-8 999 https://riubu.ubu.es/bitstream/10259/4933/5/license.txt b295bcbce42e2caabeb0c623d3860c06 MD5 5 TEXT EC2018_dual.pdf.txt EC2018_dual.pdf.txt Extracted text text/plain 27879 https://riubu.ubu.es/bitstream/10259/4933/6/EC2018_dual.pdf.txt d58edd8b0b46f915c49b82bb4ec09de0 MD5 6 10259/4933 oai:riubu.ubu.es:10259/4933 2022-05-20 15:23:26.813 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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