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dc.contributor.authorCumba, Loanda Raquel-
dc.contributor.authorBicalho, Urquisa de Oliveira-
dc.contributor.authordo Carmo, Devaney Ribeiro-
dc.identifier.citationInternational Journal of Electrochemical Science. Belgrade: Electrochemical Science Group, v. 7, n. 5, p. 4465-4478, 2012.-
dc.description.abstractIn this work, a novel Titanium (IV) Phosphate (TiPh) composite was prepared using a easily methodology of the synthesis. A preliminary characterization of the precursor and resulting materials was defined using spectroscopic and voltammetric techniques. As a second step, TiPh was reacted with silver ions (TiPhAg) and subsequent hexacyanoferrate was added (TiPhAgHCF). The electrochemical behaviour of the composite (TiPhAgHCF) was verified by means of a graphite paste electrode using cyclic voltammetry in a potential range of 0.2 to 0.9 V (vs Ag/AgCl). The cyclic voltammogram of the modified electrode containing (TiPhAgHCF) exhibited a single redox couple. The redox couple present a formal potential (E-theta) of 0.77 V vs Ag/AgCl (KNO3 1.0 mol L-1; v = 20 mV s(-1)) and ascribed to the [Fe-II(CN)(6)] / [Fe-III(CN)(6)] processes. In a electroanalytical study, the peak located at 0.77 V present a sensitive response to L-cysteine. The modified graphite paste electrode showed a linear range from 2.0x10(-4) to 9.0x10(-3) mol L-1 for the determination of L-cysteine with a limit detection of 3.34x10(-4) mol L-1 and relative standard deviation of. 5% (n = 3) and amperometric sensitivity 10.34x10(-3) A mol L-1. The modified electrode was electrochemically stable and showed excellent reproducibility.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
dc.publisherElectrochemical Science Group-
dc.sourceWeb of Science-
dc.subjectTitanium (IV) phosphateen
dc.subjectcyclic voltammetryen
dc.titlePreparation and Voltammetric Studies of Titanium (IV) Phosphate Modified with Silver Hexacyanoferrate to a Voltammetric Determination of L-Cysteineen
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUNESP Univ Estadual Paulista, Fac Engn Ilha Solteira, Dept Quim & Fis, BR-15385000 Ilha Solteira, SP, Brazil-
dc.description.affiliationUnespUNESP Univ Estadual Paulista, Fac Engn Ilha Solteira, Dept Quim & Fis, BR-15385000 Ilha Solteira, SP, Brazil-
dc.description.sponsorshipIdFAPESP: 03/12882-6-
dc.rights.accessRightsAcesso aberto-
dc.relation.ispartofInternational Journal of Electrochemical Science-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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