Electrochemical properties of Meldola's Blue immobilized on silica-titania phosphate prepared by the sol-gel method

dc.creatorFerreira, CU
dc.creatorGushikem, Y
dc.creatorKubota, LT
dc.date2000
dc.dateMAY
dc.date2014-12-02T16:29:25Z
dc.date2015-11-26T16:52:27Z
dc.date2014-12-02T16:29:25Z
dc.date2015-11-26T16:52:27Z
dc.date.accessioned2018-03-28T23:39:24Z
dc.date.available2018-03-28T23:39:24Z
dc.identifierJournal Of Solid State Electrochemistry. Springer Verlag, v. 4, n. 5, n. 298, n. 303, 2000.
dc.identifier1432-8488
dc.identifierWOS:000087388400006
dc.identifier10.1007/s100080050207
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/65184
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/65184
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/65184
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1276285
dc.descriptionThe mixed oxide phosphate (=SiO)(2)Ti(O3POH)(2) having a specific surface area of S-BET = 595 m(2) g(-1) and an average pore volume of 0.43 mL g(-1) was prepared by the sol-gel processing method. The material showed the following characteristics: Ti = 11.6 wt% and P = 10.5 wt%; ion exchange capacity of 0.60 mmol g(-1). Meldola's Blue (MLB) dye was adsorbed, by an ion exchange reaction, from an aqueous solution in a quantity of 0.62 mmol g(-1). The dye was strongly retained and was not easily leached from the matrix even in presence of 0.5 M electrolyte solution. Changing the solution pH between 2.5 and 7.0, the midpoint potential of the dye-adsorbed (=SiO)(2) Ti(O3POMLB)(2) matrix carbon paste electrode remained practically constant, i.e. about 20 mV vs. SCE. This is not the usual behaviour of MLB since its midpoint potential changes considerably in solution phase as the pH is changed. The modified electrode has proved to be stable and electrocatalytically active for hydrazine oxidation at pH 6.
dc.description4
dc.description5
dc.description298
dc.description303
dc.languageen
dc.publisherSpringer Verlag
dc.publisherNew York
dc.publisherEUA
dc.relationJournal Of Solid State Electrochemistry
dc.relationJ. Solid State Electrochem.
dc.rightsfechado
dc.rightshttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dc.sourceWeb of Science
dc.subjectsilica-titania phosphate
dc.subjectsol-gel processing
dc.subjectMeldola's Blue
dc.subjectcarbon paste electrode
dc.subjecthydrazine electrooxidation
dc.subjectConducting Substrate Base
dc.subjectElectrocatalytic Oxidation
dc.subjectNickel Hexacyanoferrate
dc.subjectGraphite-electrodes
dc.subjectZirconium-phosphate
dc.subjectTitanium(iv) Oxide
dc.subjectSurface
dc.subjectSensor
dc.subjectNadh
dc.subjectBiosensor
dc.titleElectrochemical properties of Meldola's Blue immobilized on silica-titania phosphate prepared by the sol-gel method
dc.typeArtículos de revistas


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