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dc.contributor.author
Luna, Maria Alejandra
dc.contributor.author
Moyano, Fernando
dc.contributor.author
Sereno, Leonides Edmundo
dc.contributor.author
D'eramo, Fabiana
dc.date.available
2018-01-22T14:54:15Z
dc.date.issued
2014-05
dc.identifier.citation
Luna, Maria Alejandra; Moyano, Fernando; Sereno, Leonides Edmundo; D'eramo, Fabiana; Spectroscopic and electrochemical studies of high-valent water soluble manganese porphyrine. Electrocatalytic water oxidation; Pergamon-Elsevier Science Ltd.; Electrochimica Acta; 135; 5-2014; 301-310
dc.identifier.issn
0013-4686
dc.identifier.uri
http://hdl.handle.net/11336/34076
dc.description.abstract
We report herein the catalytic oxidation of water to molecular oxygen with water-soluble 5,10,15,20-tetra(N-methylpyridyl) porphyrinato manganese (III) chloride, [PMn(III)]Cl5. The homogeneous chemical and electrochemical oxidation of [PMn(III)]Cl5 was studied in aqueous buffer solution by UV-vis and cyclic voltammetry techniques. Firstly, [PMn(III)]Cl5 was characterized by spectroscopy in pH 7 and 10, measuring the changes produced by oxidation with a chemical agent. These studies showed that intermediates with higher oxidation states, [PMn(IV) = O]Cl4 and [PMn(V) = O]Cl5, are formed under these conditions and they are more stable at pH 10 at room temperature. The same result was obtained by electrochemical oxidation. The electrochemical studies showed that [PMn(III)]Cl5 is adsorbed on glassy carbon electrode surface. However, this does not help explain the high oxidation current obtained in both pHs at high anodic potentials. We demonstrated that these currents, in the cyclic voltammperogram of the [PMn(III)]Cl5, are due mainly to the water catalytic oxidation by the [PMn(V) = O]+5 intermediate. Besides, we show that chloride ion present in the porphyrin structure can also be oxidized by the same mechanism.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd.
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Manganese Porphyrin
dc.subject
Electrocatalysis
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Electrochemistry
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Water Oxidation
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Otras Ciencias Químicas
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Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Spectroscopic and electrochemical studies of high-valent water soluble manganese porphyrine. Electrocatalytic water oxidation
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-01-22T14:25:07Z
dc.journal.volume
135
dc.journal.pagination
301-310
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Luna, Maria Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
dc.description.fil
Fil: Moyano, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
dc.description.fil
Fil: Sereno, Leonides Edmundo. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
dc.description.fil
Fil: D'eramo, Fabiana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
dc.journal.title
Electrochimica Acta
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.electacta.2014.04.157
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0013468614009372
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