Tin(iv) Oxide Grafted On A Silica Gel Surface As A Conducting Substrate Base For Cupric Hexacyanoferrate

dc.creatorZaldivar G.A.P.
dc.creatorGushikem Y.
dc.creatorKubota L.T.
dc.date1991
dc.date2015-06-30T14:10:20Z
dc.date2015-11-26T14:42:21Z
dc.date2015-06-30T14:10:20Z
dc.date2015-11-26T14:42:21Z
dc.date.accessioned2018-03-28T21:49:53Z
dc.date.available2018-03-28T21:49:53Z
dc.identifier
dc.identifierJournal Of Electroanalytical Chemistry. , v. 318, n. 1-2, p. 247 - 254, 1991.
dc.identifier220728
dc.identifier10.1016/0022-0728(91)85307-B
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-0026256873&partnerID=40&md5=8c4bf56353468662236a05fe634b88de
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/99315
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/99315
dc.identifier2-s2.0-0026256873
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1251235
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionTin(IV) oxide grafted on a silica gel surface, ( SiO)nSn(OH)4-n, was used as a conducting substrate base for cupric hexacyanoferrate electroactive species. The film adhered strongly to the surface and exhibited good chemical stability. The mid-point potential of the redox reaction ST-Cu[FeIII(CN)6] + M+ + e- ⇋ ST-MCu[FeII(CN)6] where M K+, NH+ 4, Na+, Li+ and ST denotes tin(IV) oxide substrate on silica gel surface, is related to the facility that the cation moves into and out of the film during reduction and oxidation respectively. The cyclic voltammetry waves for Li+ and Na+ were broadened, suggesting that the diffusion of these cations at the film-solution interface is hindered due to the larger hydrated ionic radii of these cations compared with those of K+ and NH+ 4. The symmetry of the cyclic voltammetry waves with respect to the potential axis indicated a highly reversible character of the redox reactions: Ipa/Ipc≈1 where Ipa and Ipc are the anodic and cathodic peak currents respectively. The film behavior was quasi-Nernstian since the slope of the straight line obtained by plotting -log (electrolyte concentration) against the mid-point potential was 46 mV per decade change of concentration of electrolyte. © 1992.
dc.description318
dc.description1-2
dc.description247
dc.description254
dc.description#2011/16174-2; FAPESP; São Paulo Research Foundation
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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dc.languageen
dc.publisher
dc.relationJournal of Electroanalytical Chemistry
dc.rightsfechado
dc.sourceScopus
dc.titleTin(iv) Oxide Grafted On A Silica Gel Surface As A Conducting Substrate Base For Cupric Hexacyanoferrate
dc.typeArtículos de revistas


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