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dc.contributor.authorLima, Alex S.-
dc.contributor.authorBocchi, Nerilso-
dc.contributor.authorGomes, Homero M.-
dc.contributor.authorTeixeira, Marcos F. S.-
dc.identifier.citationSensors. Basel: Molecular Diversity Preservation International-mdpi, v. 9, n. 9, p. 6613-6625, 2009.-
dc.description.abstractThe participation of cations in redox reactions of manganese oxides provides an opportunity for development of chemical sensors for non-electroactive ions. A sensor based on a nanostructured hollandite-type manganese oxide was investigated for voltammetric detection of potassium ions. The detection is based on the measurement of anodic current generated by oxidation of Mn(III) to Mn(IV) at the surface of the electrode and the subsequent extraction of the potassium ions into the hollandite structure. In this work, an amperometric procedure at an operating potential of 0.80 V (versus SCE) is exploited for amperometric monitoring. The current signals are linearly proportional to potassium ion concentration in the range 4.97 x 10(-5) to 9.05 x 10(-4) mol L(-1), with a correlation coefficient of 0.9997.en
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.publisherMolecular Diversity Preservation International-mdpi-
dc.sourceWeb of Science-
dc.subjecthollandite-type manganese oxideen
dc.subjectpotassium ionen
dc.subjectinsertion electrochemicalen
dc.titleAn Electrochemical Sensor Based on Nanostructured Hollandite-type Manganese Oxide for Detection of Potassium Ionsen
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)-
dc.description.affiliationUniv State São Paulo, UNESP, Fac Sci & Technol, Dept Phys Chem & Biol, BR-19060900 Presidente Prudente, SP, Brazil-
dc.description.affiliationUniv Fed Sao Carlos, Dept Quim, BR-13560 Sao Carlos, SP, Brazil-
dc.description.affiliationUnespUniv State São Paulo, UNESP, Fac Sci & Technol, Dept Phys Chem & Biol, BR-19060900 Presidente Prudente, SP, Brazil-
dc.description.sponsorshipIdCNPq: 372010/2006-7-
dc.rights.accessRightsAcesso aberto-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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