Adsorption of dihydrogen phosphate ion on platinum electrodes in aqueous media monitored by probe-beam deflection

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:21:22Z
dc.date.available2014-05-27T11:21:22Z
dc.date.created2014-05-27T11:21:22Z
dc.date.issued2005-06-07
dc.identifierChemical Physics Letters, v. 408, n. 1-3, p. 1-4, 2005.
dc.identifier0009-2614
dc.identifierhttp://hdl.handle.net/11449/68284
dc.identifier10.1016/j.cplett.2005.03.138
dc.identifierWOS:000229655200001
dc.identifier2-s2.0-18844393771
dc.identifier9220348583560043
dc.identifier0000-0001-7040-1983
dc.description.abstractProbe-beam deflection (PBD) was used to monitor concentration gradients of anions adjacent to the surface of a platinum electrode in acidic aqueous media containing H3PO4. PBD can measure the potential-dependent extent of adsorption of H2PO4- on the Pt electrode surface and permits the Langmuir isotherm to be fitted to the experimental data. The value thus obtained for the surface concentration was 1.3 × 10-11 mol mm -2, or 1.7 atoms of Pt per H2PO4-. Also, the electron transfer number obtained was 0.24, signifying an incomplete transfer of charge, and the equilibrium constant is 1.80 suggesting a reversible adsorption process. © 2005 Elsevier B.V. All rights reserved.
dc.languageeng
dc.relationChemical Physics Letters
dc.relation1.686
dc.relation0,656
dc.rightsAcesso restrito
dc.sourceScopus
dc.subjectAdsorption
dc.subjectCharge transfer
dc.subjectElectrodes
dc.subjectNegative ions
dc.subjectPhosphates
dc.subjectPlatinum
dc.subjectSolutions
dc.subjectSpectrometers
dc.subjectAnion adsorption
dc.subjectDihydrogen
dc.subjectElectrode surfaces
dc.subjectProbe-beam detection
dc.subjectIons
dc.titleAdsorption of dihydrogen phosphate ion on platinum electrodes in aqueous media monitored by probe-beam deflection
dc.typeArtículos de revistas


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