Spectroscopic and electrochemical studies of high-valent water soluble manganese porphyrine. Electrocatalytic water oxidation
- Autores
- Luna, Maria Alejandra; Moyano, Fernando; Sereno, Leonides Edmundo; D'eramo, Fabiana
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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.
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
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
Fil: Sereno, Leonides Edmundo. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
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 - Materia
-
Manganese Porphyrin
Electrocatalysis
Electrochemistry
Water Oxidation - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/34076
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oai:ri.conicet.gov.ar:11336/34076 |
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3498 |
network_name_str |
CONICET Digital (CONICET) |
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Spectroscopic and electrochemical studies of high-valent water soluble manganese porphyrine. Electrocatalytic water oxidationLuna, Maria AlejandraMoyano, FernandoSereno, Leonides EdmundoD'eramo, FabianaManganese PorphyrinElectrocatalysisElectrochemistryWater Oxidationhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1We 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.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; ArgentinaFil: 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; ArgentinaFil: Sereno, Leonides Edmundo. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; ArgentinaFil: 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; ArgentinaPergamon-Elsevier Science Ltd.2014-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/34076Luna, 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; 301-3100013-4686CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2014.04.157info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0013468614009372info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:19:09Zoai:ri.conicet.gov.ar:11336/34076instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:19:09.298CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Spectroscopic and electrochemical studies of high-valent water soluble manganese porphyrine. Electrocatalytic water oxidation |
title |
Spectroscopic and electrochemical studies of high-valent water soluble manganese porphyrine. Electrocatalytic water oxidation |
spellingShingle |
Spectroscopic and electrochemical studies of high-valent water soluble manganese porphyrine. Electrocatalytic water oxidation Luna, Maria Alejandra Manganese Porphyrin Electrocatalysis Electrochemistry Water Oxidation |
title_short |
Spectroscopic and electrochemical studies of high-valent water soluble manganese porphyrine. Electrocatalytic water oxidation |
title_full |
Spectroscopic and electrochemical studies of high-valent water soluble manganese porphyrine. Electrocatalytic water oxidation |
title_fullStr |
Spectroscopic and electrochemical studies of high-valent water soluble manganese porphyrine. Electrocatalytic water oxidation |
title_full_unstemmed |
Spectroscopic and electrochemical studies of high-valent water soluble manganese porphyrine. Electrocatalytic water oxidation |
title_sort |
Spectroscopic and electrochemical studies of high-valent water soluble manganese porphyrine. Electrocatalytic water oxidation |
dc.creator.none.fl_str_mv |
Luna, Maria Alejandra Moyano, Fernando Sereno, Leonides Edmundo D'eramo, Fabiana |
author |
Luna, Maria Alejandra |
author_facet |
Luna, Maria Alejandra Moyano, Fernando Sereno, Leonides Edmundo D'eramo, Fabiana |
author_role |
author |
author2 |
Moyano, Fernando Sereno, Leonides Edmundo D'eramo, Fabiana |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Manganese Porphyrin Electrocatalysis Electrochemistry Water Oxidation |
topic |
Manganese Porphyrin Electrocatalysis Electrochemistry Water Oxidation |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
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. 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 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 Fil: Sereno, Leonides Edmundo. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina 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 |
description |
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. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-05 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/34076 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 0013-4686 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/34076 |
identifier_str_mv |
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 0013-4686 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2014.04.157 info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0013468614009372 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Pergamon-Elsevier Science Ltd. |
publisher.none.fl_str_mv |
Pergamon-Elsevier Science Ltd. |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
_version_ |
1844614160387670016 |
score |
13.070432 |