Anodic oxidation of cysteine catalysed by nickel tetrasulphonated phthalocyanine immobilized on silica gel modified with titanium(IV) oxide

dc.creatorPerez, EF
dc.creatorKubota, LT
dc.creatorTanaka, AA
dc.creatorNeto, GD
dc.date1998
dc.date2014-12-02T16:26:14Z
dc.date2015-11-26T16:26:17Z
dc.date2014-12-02T16:26:14Z
dc.date2015-11-26T16:26:17Z
dc.date.accessioned2018-03-28T23:07:03Z
dc.date.available2018-03-28T23:07:03Z
dc.identifierElectrochimica Acta. Pergamon-elsevier Science Ltd, v. 43, n. 41609, n. 1665, n. 1673, 1998.
dc.identifier0013-4686
dc.identifierWOS:000074191100001
dc.identifier10.1016/S0013-4686(97)00323-X
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/77596
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/77596
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/77596
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1268845
dc.descriptionA chemically modified electrode constructed by mixing nickel tetrasulfonated phthalocyanine (NiTsPc) immobilized on modified silica gel with carbon paste showed a redox process with a midpoint potential of 0.44 V vs see. Experiments carried out with different supporting electrolytes suggested an effect due to the nature of the anion. The solution pH does not affect the midpoint potential but the peak current increases when the pH is decreased. The immobilization procedure causes an increase in the monomeric form of the complex. The electrochemical property of NiTsPc adsorbed onto modified silica showed good stability even in acidic media (pH = 2) and the ability to catalyze the electro-oxidation of cysteine at 0.5 V vs see. (C) 1998 Elsevier Science Ltd. All rights reserved.
dc.description43
dc.description41609
dc.description1665
dc.description1673
dc.languageen
dc.publisherPergamon-elsevier Science Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationElectrochimica Acta
dc.relationElectrochim. Acta
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectMetal-phthalocyanines
dc.subjectCobalt Phthalocyanine
dc.subjectGraphite-electrodes
dc.subjectHydrazine
dc.subjectReduction
dc.subjectSurface
dc.subjectElectrochemistry
dc.subjectElectrooxidation
dc.subjectPotentials
dc.subjectChloride
dc.titleAnodic oxidation of cysteine catalysed by nickel tetrasulphonated phthalocyanine immobilized on silica gel modified with titanium(IV) oxide
dc.typeArtículos de revistas


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