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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/57898
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dc.creatorRicardo Adriano Dorledo de Fariapt_BR
dc.creatorAlexandre Douaudpt_BR
dc.creatorRenata Braga Soarespt_BR
dc.creatorLuiz Guilherme Dias Heneinept_BR
dc.creatorTulio Matenciopt_BR
dc.creatorVanessa de Freitas Cunha Linspt_BR
dc.creatorYounès Messaddeqpt_BR
dc.date.accessioned2023-08-17T18:16:46Z-
dc.date.available2023-08-17T18:16:46Z-
dc.date.issued2020-
dc.citation.volume76pt_BR
dc.citation.issue6pt_BR
dc.citation.spage553pt_BR
dc.citation.epage561pt_BR
dc.identifier.doihttps://doi.org/10.5006/3203pt_BR
dc.identifier.issn1938-159Xpt_BR
dc.identifier.urihttp://hdl.handle.net/1843/57898-
dc.description.resumoScreen-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 K3[Fe(CN)6]/K4[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 sp² carbon atoms (graphite flakes) and a multitude of broad bands associable to amorphous sp³ 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.pt_BR
dc.description.sponsorshipOutra Agênciapt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA QUÍMICApt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE QUÍMICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofCorrosionpt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectCorrosionpt_BR
dc.subjectFaradaic electrochemical impedance spectroscopy (EIS)pt_BR
dc.subjectNon-faradaic electrochemical impedance spectroscopy (EIS)pt_BR
dc.subjectScreen-printed carbon electrodept_BR
dc.subjectSensorpt_BR
dc.subject.otherEletroquímicapt_BR
dc.subject.otherEspectroscopia de impedânciapt_BR
dc.subject.otherBiossensorespt_BR
dc.subject.otherDetectores eletroquímicospt_BR
dc.subject.otherEletrodo de carbonopt_BR
dc.subject.otherRaman, Espectroscopia dept_BR
dc.titleElectrochemical behavior of screen-printed carbon electrodes as transducers in biosensorspt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://meridian.allenpress.com/corrosion/article-abstract/76/6/553/445532/Electrochemical-Behavior-of-Screen-Printed-Carbonpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-7025-7042pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-7642-8404pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0707-2691pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-5660-8125pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-6357-9553pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-0868-2726pt_BR
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