Principal Component Analysis as a Tool for Electrochemical Characterization of Modified Electrodes: A Case Study
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1149/1945-7111/ac5e48 http://hdl.handle.net/11449/241001 |
Resumo: | Characterizing 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. |
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Principal Component Analysis as a Tool for Electrochemical Characterization of Modified Electrodes: A Case StudyCharacterizing 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.Departamento de Química Fundamental Instituto de Química Universidade de São Paulo (USP), SPDepartamento de Produção Animal e Medicina Veterinária Preventiva Faculdade de Medicina Veterinária e Zootecnia Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), SPDepartamento de Bioprocessos e Biotecnologia Faculdade de Ciências Agronômicas Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), SPInstituto de Química Universidade Federal Do Rio de Janeiro (UFRJ), RJInstituto Nacional de Metrologia (Inmetro), RJDepartamento de Produção Animal e Medicina Veterinária Preventiva Faculdade de Medicina Veterinária e Zootecnia Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), SPDepartamento de Bioprocessos e Biotecnologia Faculdade de Ciências Agronômicas Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), SPUniversidade de São Paulo (USP)Universidade Estadual Paulista (UNESP)Universidade Federal do Rio de Janeiro (UFRJ)Instituto Nacional de Metrologia (Inmetro)Teixeira, Wanderson Sirley Reis [UNESP]Silva, Martin Kássio Leme [UNESP]Grasseschi, DanielSenna, Carlos AlbertoOliveira, André Guimarães deGruber, JonasCesarino, Ivana [UNESP]Salles, Maiara Oliveira2023-03-01T20:42:37Z2023-03-01T20:42:37Z2022-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1149/1945-7111/ac5e48Journal of the Electrochemical Society, v. 169, n. 4, 2022.1945-71110013-4651http://hdl.handle.net/11449/24100110.1149/1945-7111/ac5e482-s2.0-85130194860Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of the Electrochemical Societyinfo:eu-repo/semantics/openAccess2023-03-01T20:42:37Zoai:repositorio.unesp.br:11449/241001Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-03-01T20:42:37Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Principal Component Analysis as a Tool for Electrochemical Characterization of Modified Electrodes: A Case Study |
title |
Principal Component Analysis as a Tool for Electrochemical Characterization of Modified Electrodes: A Case Study |
spellingShingle |
Principal Component Analysis as a Tool for Electrochemical Characterization of Modified Electrodes: A Case Study Teixeira, Wanderson Sirley Reis [UNESP] |
title_short |
Principal Component Analysis as a Tool for Electrochemical Characterization of Modified Electrodes: A Case Study |
title_full |
Principal Component Analysis as a Tool for Electrochemical Characterization of Modified Electrodes: A Case Study |
title_fullStr |
Principal Component Analysis as a Tool for Electrochemical Characterization of Modified Electrodes: A Case Study |
title_full_unstemmed |
Principal Component Analysis as a Tool for Electrochemical Characterization of Modified Electrodes: A Case Study |
title_sort |
Principal Component Analysis as a Tool for Electrochemical Characterization of Modified Electrodes: A Case Study |
author |
Teixeira, Wanderson Sirley Reis [UNESP] |
author_facet |
Teixeira, Wanderson Sirley Reis [UNESP] Silva, Martin Kássio Leme [UNESP] Grasseschi, Daniel Senna, Carlos Alberto Oliveira, André Guimarães de Gruber, Jonas Cesarino, Ivana [UNESP] Salles, Maiara Oliveira |
author_role |
author |
author2 |
Silva, Martin Kássio Leme [UNESP] Grasseschi, Daniel Senna, Carlos Alberto Oliveira, André Guimarães de Gruber, Jonas Cesarino, Ivana [UNESP] Salles, Maiara Oliveira |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (UNESP) Universidade Federal do Rio de Janeiro (UFRJ) Instituto Nacional de Metrologia (Inmetro) |
dc.contributor.author.fl_str_mv |
Teixeira, Wanderson Sirley Reis [UNESP] Silva, Martin Kássio Leme [UNESP] Grasseschi, Daniel Senna, Carlos Alberto Oliveira, André Guimarães de Gruber, Jonas Cesarino, Ivana [UNESP] Salles, Maiara Oliveira |
description |
Characterizing 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. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-01 2023-03-01T20:42:37Z 2023-03-01T20:42:37Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1149/1945-7111/ac5e48 Journal of the Electrochemical Society, v. 169, n. 4, 2022. 1945-7111 0013-4651 http://hdl.handle.net/11449/241001 10.1149/1945-7111/ac5e48 2-s2.0-85130194860 |
url |
http://dx.doi.org/10.1149/1945-7111/ac5e48 http://hdl.handle.net/11449/241001 |
identifier_str_mv |
Journal of the Electrochemical Society, v. 169, n. 4, 2022. 1945-7111 0013-4651 10.1149/1945-7111/ac5e48 2-s2.0-85130194860 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of the Electrochemical Society |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1803047406673068032 |