Electrochemical Behavior of Screen-Printed Carbon Electrodes as Transducers in Biosensors

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Federal de Minas Gerais (UFMG)-
Autor(es): dc.contributorUniv Laval-
Autor(es): dc.contributorFundacao Ezequiel Dias FUNED-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorDorledo de Faria, Ricardo Adriano-
Autor(es): dc.creatorDouaud, Alexandre-
Autor(es): dc.creatorSoares, Renata Braga-
Autor(es): dc.creatorDias Heneine, Luiz Guilherme-
Autor(es): dc.creatorMatencio, Tulio-
Autor(es): dc.creatorCunha Lins, Vanessa de Freitas-
Autor(es): dc.creatorMessaddeq, Younes [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:20:01Z-
Data de disponibilização: dc.date.available2022-02-22T00:20:01Z-
Data de envio: dc.date.issued2020-12-10-
Data de envio: dc.date.issued2020-12-10-
Data de envio: dc.date.issued2020-06-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.5006/3203-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/197767-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/197767-
Descrição: dc.descriptionScreen-printed carbon electrode (SPCE) was examined as a transducer substrate for application in electrochemical sensors. Aqueous solutions of 0.1 M KCl and 0.1 M KCl + 5 mM K-3[Fe(CN)(6)]/K-4[Fe(CN)(6)] (redox solution) were prepared to simulate the environment of faradaic and non-faradaic sensing, respectively. The SPCE presented an irregular surface composed by two main carbon phases. Raman spectroscopy results revealed the presence of peaks around 1,580 cm(-1) and 1,334 cm(-1) related to the G and D bands corresponding to sp(2) carbon atoms (graphite flakes) and a multitude of broad bands associable to amorphous sp(3) carbon in the ink matrix. Conductive atomic force microscopy indicated that the irregular structure of the SPCE led to the heterogeneous distribution of the current over the surface and the electroactivity of this material was mainly attributed to the presence of graphite. Polarization curves and electrochemical impedance spectroscopy (EIS) revealed that the redox solution was more aggressive to the SPCE, despite this electrode was achieved a quasi-steady state for 1 h under the effect of a polarization potential in both electrolytes, which justifies its use as an electrochemical transducer in faradaic and non-faradaic devices.-
Descrição: dc.descriptionNatural Sciences and Engineering Research Council of Canada (CRSNG)-
Descrição: dc.descriptionCanadian Funding for Infrastructure (CFI)-
Descrição: dc.descriptionCanada Excellence Research Chair in Photonics Innovations (CERCP)-
Descrição: dc.descriptionUniv Fed Minas Gerais UFMG, Dept Chem Engn, BR-30270901 Belo Horizonte, MG, Brazil-
Descrição: dc.descriptionUniv Laval, Ctr Opt Photon & Lasers COPL, Quebec City, PQ G1V 0A6, Canada-
Descrição: dc.descriptionFundacao Ezequiel Dias FUNED, Dept Appl Immunol, BR-30510010 Belo Horizonte, MG, Brazil-
Descrição: dc.descriptionUniv Fed Minas Gerais UFMG, Dept Chem, BR-30270901 Belo Horizonte, MG, Brazil-
Descrição: dc.descriptionUNESP, Inst Chem, BR-14800060 Araraquara, SP, Brazil-
Descrição: dc.descriptionUNESP, Inst Chem, BR-14800060 Araraquara, SP, Brazil-
Formato: dc.format553-561-
Idioma: dc.languageen-
Publicador: dc.publisherNatl Assoc Corrosion Eng-
Relação: dc.relationCorrosion-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectcorrosion-
Palavras-chave: dc.subjectfaradaic electrochemical impedance spectroscopy (EIS)-
Palavras-chave: dc.subjectnon-faradaic electrochemical impedance spectroscopy (EIS)-
Palavras-chave: dc.subjectscreen-printed carbon electrode-
Palavras-chave: dc.subjectsensor-
Título: dc.titleElectrochemical Behavior of Screen-Printed Carbon Electrodes as Transducers in Biosensors-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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