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Principal Component Analysis as a Tool for Electrochemical Characterization of Modified Electrodes: A Case Study

dc.contributor.authorTeixeira, Wanderson Sirley Reis [UNESP]
dc.contributor.authorSilva, Martin Kássio Leme [UNESP]
dc.contributor.authorGrasseschi, Daniel
dc.contributor.authorSenna, Carlos Alberto
dc.contributor.authorOliveira, André Guimarães de
dc.contributor.authorGruber, Jonas
dc.contributor.authorCesarino, Ivana [UNESP]
dc.contributor.authorSalles, Maiara Oliveira
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade Federal do Rio de Janeiro (UFRJ)
dc.contributor.institutionInstituto Nacional de Metrologia (Inmetro)
dc.date.accessioned2023-03-01T20:42:37Z
dc.date.available2023-03-01T20:42:37Z
dc.date.issued2022-04-01
dc.description.abstractCharacterizing electrodes surface is a mandatory step in developing any electrochemical methodology, especially when electrode modification is performed. One or two electrochemical techniques are often used, and their results are evaluated separately, leading to the loss of valuable information. Principal Component Analysis (PCA) is presented as an appealing strategy to optimize the electrochemical characterization of the modified-electrode s surface. The developed strategy was applied for the characterization of glassy carbon (GC) electrode modified with reduced graphene oxide (GC/RGO), RGO with gold nanoparticles (GC/RGO/AuNP), and RGO with copper nanoparticles (GC/RGO/CuNP). The electrochemical characterization techniques used were differential pulse voltammetry (DPV), linear scan voltammetry (LSV), and electrochemical impedance spectroscopy (EIS). The PCA showed the data from the four electrodes separately, and it was possible to determine that the GC/RGO/AuNP electrode had the most efficient surface for charge transfer. By scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) experiments, the metal:RGO ratio was determined, and by normalizing the results with this ratio, GC/RGO/CuNP and GC/RGO/ AuNP presented similar responses. With the proposed methodology, it was possible to evaluate simultaneously and straightforwardly all data, making this propose an innovative method for a robust electrochemical characterization based on usual electrochemical techniques.en
dc.description.affiliationDepartamento de Química Fundamental Instituto de Química Universidade de São Paulo (USP), SP
dc.description.affiliationDepartamento de Produção Animal e Medicina Veterinária Preventiva Faculdade de Medicina Veterinária e Zootecnia Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), SP
dc.description.affiliationDepartamento de Bioprocessos e Biotecnologia Faculdade de Ciências Agronômicas Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), SP
dc.description.affiliationInstituto de Química Universidade Federal Do Rio de Janeiro (UFRJ), RJ
dc.description.affiliationInstituto Nacional de Metrologia (Inmetro), RJ
dc.description.affiliationUnespDepartamento de Produção Animal e Medicina Veterinária Preventiva Faculdade de Medicina Veterinária e Zootecnia Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), SP
dc.description.affiliationUnespDepartamento de Bioprocessos e Biotecnologia Faculdade de Ciências Agronômicas Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), SP
dc.identifierhttp://dx.doi.org/10.1149/1945-7111/ac5e48
dc.identifier.citationJournal of the Electrochemical Society, v. 169, n. 4, 2022.
dc.identifier.doi10.1149/1945-7111/ac5e48
dc.identifier.issn1945-7111
dc.identifier.issn0013-4651
dc.identifier.scopus2-s2.0-85130194860
dc.identifier.urihttp://hdl.handle.net/11449/241001
dc.language.isoeng
dc.relation.ispartofJournal of the Electrochemical Society
dc.sourceScopus
dc.titlePrincipal Component Analysis as a Tool for Electrochemical Characterization of Modified Electrodes: A Case Studyen
dc.typeArtigo
unesp.author.orcid0000-0002-7914-2567 0000-0002-7914-2567[1]
unesp.author.orcid0000-0003-2410-9716[2]
unesp.author.orcid0000-0001-6066-0869[3]
unesp.author.orcid0000-0003-2832-0199[6]
unesp.author.orcid0000-0002-2296-3671[7]
unesp.author.orcid0000-0002-0581-2038[8]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Medicina Veterinária e Zootecnia, Botucatupt
unesp.departmentProdução Animal - FMVZpt

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