Voltammetric studies of titanium (IV) phosphate modified with copper hexacyanoferrate and electroanalytical determination of N-acetylcysteine

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dc.contributor.authorFavaro Pipi, Angelo Ricardo [UNESP]
dc.contributor.authordo Carmo, Devaney Ribeiro [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:29:48Z
dc.date.available2014-05-20T13:29:48Z
dc.date.issued2011-07-01
dc.description.abstractTitanium (IV) Phosphate copper hexacyanoferrate composite (TiPhCuHCF) was prepared using a new methodology for the synthesis. A preliminary characterization of the precursor and resulting materials was defined using spectroscopic and chemical techniques. The cyclic voltammogram of the modified electrode containing TiPhCuHCF exhibited two redox couples. The first and second redox couples present a formal potential (E(theta')) of 0.18 and 0.76 V and were ascribed to the Cu(+/)Cu(2+) (E(theta'))(1) and Fe(2+)(CN)(6)/Fe(3+)(CN)(6) (E(theta'))(2) processes, respectively. In a preliminary study, the peak located at 0.76 V displays a sensitive response to N-acetylcysteine. The modified graphite paste electrode showed a linear range from 1.0 x 10(-5) to 7.0 x 10(-4) mol L(-1) for the determination of N-acetylcysteine with a limit detection of 6.96 x 10(-5) mol L(-1) and relative standard deviation of +/- 5% (n = 3) and amperometric sensitivity of 24.79 x 10(-3) A mol L(-1). The modified electrode was electrochemically stable and showed good reproducibility.en
dc.description.affiliationUniv Estadual Paulista, Dept Fis & Quim, Fac Engn Ilha Solteira UNESP, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Fis & Quim, Fac Engn Ilha Solteira UNESP, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 03/12882-6
dc.description.sponsorshipIdFAPESP: 07/57678-8
dc.format.extent787-793
dc.identifierhttp://dx.doi.org/10.1007/s10800-011-0296-x
dc.identifier.citationJournal of Applied Electrochemistry. Dordrecht: Springer, v. 41, n. 7, p. 787-793, 2011.
dc.identifier.doi10.1007/s10800-011-0296-x
dc.identifier.issn0021-891X
dc.identifier.lattes0545046720519536
dc.identifier.urihttp://hdl.handle.net/11449/10093
dc.identifier.wosWOS:000294477800004
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofJournal of Applied Electrochemistry
dc.relation.ispartofjcr2.262
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectTitanium (IV) phosphateen
dc.subjectCyclic voltammetryen
dc.subjectN-acetylcysteineen
dc.subjectCopper hexacyanoferrateen
dc.subjectCompositeen
dc.titleVoltammetric studies of titanium (IV) phosphate modified with copper hexacyanoferrate and electroanalytical determination of N-acetylcysteineen
dc.typeArtigo
dcterms.rightsHolderSpringer
unesp.author.lattes0545046720519536
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt

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