A cubic silsesquioxane modified with purpald (r) : preparation, characterization and a voltammetric application for determination of sulfite

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dc.contributor.authorSoares, Layciane Aparecida [UNESP]
dc.contributor.authorWang Yingzi
dc.contributor.authorSerantoni da Silveira, Tayla Fernanda [UNESP]
dc.contributor.authorSilvestrini, Daniela Rodrigues [UNESP]
dc.contributor.authorBicalho, Urquisa de Oliveira [UNESP]
dc.contributor.authorDias Filho, Newton Luiz [UNESP]
dc.contributor.authorCarmo, Devaney Ribeiro do [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionShanghai Univ
dc.date.accessioned2014-12-03T13:11:51Z
dc.date.available2014-12-03T13:11:51Z
dc.date.issued2013-06-01
dc.description.abstractA novel composite formed by interaction of a octa(3-chloropropyl)octasilsesquioxane modified with Purpald(R), and its subsequent reaction with silver and hexacyanoferrate (III) (AgHSP), was synthesized and initially characterized by Fourier transform infrared spectra (FTIR) and cyclic voltammetry. The cyclic voltammogram of the modified graphite paste electrode with AgHSP, showed one redox couple with formal potential E-theta'=0.64V (vs Ag/AgCl, KNO3, 1.0 mol L-1; v = 20 mV s(-1)), attributed to the Fe2+(CN)(6)/Fe3+(CN)(6) process. The redox couple presents an electrocatalytic response for determination of sulfite. The modified electrode showed a linear response from 7.0x10(-5) to 1.0x10(-3) mol L-1 with the corresponding equation Y(mu A) = 18.05 + 29.983x10(3) [sulfite], and a correlation coefficient of r=0.999. The method showed a detection limit of 0.115x10(-4) mol L-1 with a relative standard deviation of +/- 4% (n = 3) and amperometric sensitivity of 29.983x10(-3)A mol L-1. The modified electrode showed a excellent stability and good reproducibility during experiments.en
dc.description.affiliationUniv Estadual Paulista, Fac Engn Ilha Solteira UNESP, Dept Quim & Fis, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationShanghai Univ, Dept Chem, Coll Sci, Shanghai 200444, Peoples R China
dc.description.affiliationUnespUniv Estadual Paulista, Fac Engn Ilha Solteira UNESP, Dept Quim & Fis, BR-15385000 Ilha Solteira, SP, Brazil
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.description.sponsorshipIdFAPESP: 12/05438-1
dc.description.sponsorshipIdFAPESP: 12/11306-0
dc.format.extent7565-7580
dc.identifierhttp://www.electrochemsci.org/papers/vol8/80607565.pdf
dc.identifier.citationInternational Journal of Electrochemical Science. Belgrade: Esg, v. 8, n. 6, p. 7565-7580, 2013.
dc.identifier.fileWOS000323546100008.pdf
dc.identifier.issn1452-3981
dc.identifier.lattes1614745697870003
dc.identifier.lattes1509480515046572
dc.identifier.lattes0545046720519536
dc.identifier.urihttp://hdl.handle.net/11449/113643
dc.identifier.wosWOS:000323546100008
dc.language.isoeng
dc.publisherEsg
dc.relation.ispartofInternational Journal of Electrochemical Science
dc.relation.ispartofjcr1.369
dc.relation.ispartofsjr0,366
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectocta(3-chloropropyl)octasilsesquioxaneen
dc.subjectpurpalden
dc.subjectsulfiteen
dc.subjectgraphite paste electrodeen
dc.subjectvoltammetryen
dc.titleA cubic silsesquioxane modified with purpald (r) : preparation, characterization and a voltammetric application for determination of sulfiteen
dc.typeArtigo
dcterms.rightsHolderEsg
unesp.author.lattes1614745697870003
unesp.author.lattes1509480515046572
unesp.author.lattes0545046720519536
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt
unesp.departmentFísica e Química - FEISpt

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