Synthesis of Silver Nanoparticle-Graphene Composites for Electroanalysis Applications using Chemical and Electrochemical Methods

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dc.contributor.authorGolinelli, Diego L.C.
dc.contributor.authorMachado, Sergio A.S.
dc.contributor.authorCesarino, Ivana [UNESP]
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T16:45:12Z
dc.date.available2018-12-11T16:45:12Z
dc.date.issued2017-04-01
dc.description.abstractAn electrochemical device was developed for the simultaneous determination of sulfamethoxazole (SMX) and trimethoprim (TMP) using differential pulse voltammetry and glassy carbon (GC) electrodes modified with reduced graphene oxide (rGO) and silver nanoparticle (AgNP) composites, synthesised using both chemical and electrochemical methods. The morphology and electrochemical behaviour of the GC electrodes modified with the rGO/AgNP (chemical method) and rGO-AgNP (electrochemical method) composites were characterised by scanning electron microscopy and cyclic voltammetry. These techniques demonstrated that, in both methods, the graphene oxide was modified by the AgNPs, and the composite synthesised by the electrochemical method showed a better dispersion of the nanoparticles, resulting in an increase in the surface area compared to the rGO/AgNP composite. The GC/rGO-AgNP electrode was evaluated and optimised for the simultaneous determination of SMX and TMP, achieving detection limits of 0.6 μmol L−1 for the SMX and 0.4 μmol L−1 for the TMP. The proposed GC/rGO-AgNP electrochemical device was successfully applied to the simultaneous determination of SMX and TMP in wastewaters samples.en
dc.description.affiliationInstituto de Química de São Carlos Universidade de São Paulo, C.P. 780
dc.description.affiliationCollege of Agricultural Sciences UNESP-São Paulo State University Department of Bioprocess and Biotechnology
dc.description.affiliationUnespCollege of Agricultural Sciences UNESP-São Paulo State University Department of Bioprocess and Biotechnology
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2015/02136-2
dc.format.extent1014-1021
dc.identifierhttp://dx.doi.org/10.1002/elan.201600669
dc.identifier.citationElectroanalysis, v. 29, n. 4, p. 1014-1021, 2017.
dc.identifier.doi10.1002/elan.201600669
dc.identifier.issn1521-4109
dc.identifier.issn1040-0397
dc.identifier.scopus2-s2.0-85007286966
dc.identifier.urihttp://hdl.handle.net/11449/169281
dc.language.isoeng
dc.relation.ispartofElectroanalysis
dc.relation.ispartofsjr0,692
dc.relation.ispartofsjr0,692
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectAntibiotics
dc.subjectGraphene
dc.subjectSilver nanoparticles
dc.titleSynthesis of Silver Nanoparticle-Graphene Composites for Electroanalysis Applications using Chemical and Electrochemical Methodsen
dc.typeArtigo

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