Electrocatalytic and Magnetic Properties of Ultrathin Nanostructured Iron–Melanin Films on Au(111)

Autores
González Orive, Alejandro; Dip, Patricio; Gimeno, Yurima; Díaz, Pilar; Carro, Pilar; Hernández Creus, Alberto; Benitez, Guillermo Alfredo; Schilardi, Patricia Laura; Andrini, Leandro Rubén; Requejo, Félix Gregorio; Salvarezza, Roberto Carlos
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We have prepared ultrathin, nanostructured melanin films on Au- ACHTUNGTRENUNG(111) by means of electrochemical selfassembly. These films were characterized by using Auger electron spectroscopy, X-ray absorption near-edge structure spectroscopy, scanning tunneling microscopy, magnetic force microscopy, and electrochemical techniques. Two types of nanostructures are present in the film: melanin nanoparticles and Fe3O4 nanoparticles. The melanin nanoparticles contain Fe bonded to oxygen-containing phenolic groups in an octahedral configuration similar to that found in Fe2O3. The inorganic– organic composite exhibits magnetic properties and catalyzes the electroreduction of hydrogen peroxide in alkaline and neutral electrolyte solutions. The electrocatalytic activity depends on the Fe-bound melanin and appears to be similar to that found for Fe–porphyrins.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Química
biosensors
catalysis
magnetic properties
melanins
nanostructures
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/108972
Acceder
id SEDICI_7c52edfb7b695e6752fad64cefa0c11f
oai_identifier_str oai:sedici.unlp.edu.ar:10915/108972
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Electrocatalytic and Magnetic Properties of Ultrathin Nanostructured Iron–Melanin Films on Au(111)González Orive, AlejandroDip, PatricioGimeno, YurimaDíaz, PilarCarro, PilarHernández Creus, AlbertoBenitez, Guillermo AlfredoSchilardi, Patricia LauraAndrini, Leandro RubénRequejo, Félix GregorioSalvarezza, Roberto CarlosQuímicabiosensorscatalysismagnetic propertiesmelaninsnanostructuresWe have prepared ultrathin, nanostructured melanin films on Au- ACHTUNGTRENUNG(111) by means of electrochemical selfassembly. These films were characterized by using Auger electron spectroscopy, X-ray absorption near-edge structure spectroscopy, scanning tunneling microscopy, magnetic force microscopy, and electrochemical techniques. Two types of nanostructures are present in the film: melanin nanoparticles and Fe3O4 nanoparticles. The melanin nanoparticles contain Fe bonded to oxygen-containing phenolic groups in an octahedral configuration similar to that found in Fe2O3. The inorganic– organic composite exhibits magnetic properties and catalyzes the electroreduction of hydrogen peroxide in alkaline and neutral electrolyte solutions. The electrocatalytic activity depends on the Fe-bound melanin and appears to be similar to that found for Fe–porphyrins.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas2007info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf473-482http://sedici.unlp.edu.ar/handle/10915/108972enginfo:eu-repo/semantics/altIdentifier/issn/1521-3765info:eu-repo/semantics/altIdentifier/doi/10.1002/chem.200600492info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:24:41Zoai:sedici.unlp.edu.ar:10915/108972Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:24:42.196SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Electrocatalytic and Magnetic Properties of Ultrathin Nanostructured Iron–Melanin Films on Au(111)
title Electrocatalytic and Magnetic Properties of Ultrathin Nanostructured Iron–Melanin Films on Au(111)
spellingShingle Electrocatalytic and Magnetic Properties of Ultrathin Nanostructured Iron–Melanin Films on Au(111)
González Orive, Alejandro
Química
biosensors
catalysis
magnetic properties
melanins
nanostructures
title_short Electrocatalytic and Magnetic Properties of Ultrathin Nanostructured Iron–Melanin Films on Au(111)
title_full Electrocatalytic and Magnetic Properties of Ultrathin Nanostructured Iron–Melanin Films on Au(111)
title_fullStr Electrocatalytic and Magnetic Properties of Ultrathin Nanostructured Iron–Melanin Films on Au(111)
title_full_unstemmed Electrocatalytic and Magnetic Properties of Ultrathin Nanostructured Iron–Melanin Films on Au(111)
title_sort Electrocatalytic and Magnetic Properties of Ultrathin Nanostructured Iron–Melanin Films on Au(111)
dc.creator.none.fl_str_mv González Orive, Alejandro
Dip, Patricio
Gimeno, Yurima
Díaz, Pilar
Carro, Pilar
Hernández Creus, Alberto
Benitez, Guillermo Alfredo
Schilardi, Patricia Laura
Andrini, Leandro Rubén
Requejo, Félix Gregorio
Salvarezza, Roberto Carlos
author González Orive, Alejandro
author_facet González Orive, Alejandro
Dip, Patricio
Gimeno, Yurima
Díaz, Pilar
Carro, Pilar
Hernández Creus, Alberto
Benitez, Guillermo Alfredo
Schilardi, Patricia Laura
Andrini, Leandro Rubén
Requejo, Félix Gregorio
Salvarezza, Roberto Carlos
author_role author
author2 Dip, Patricio
Gimeno, Yurima
Díaz, Pilar
Carro, Pilar
Hernández Creus, Alberto
Benitez, Guillermo Alfredo
Schilardi, Patricia Laura
Andrini, Leandro Rubén
Requejo, Félix Gregorio
Salvarezza, Roberto Carlos
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Química
biosensors
catalysis
magnetic properties
melanins
nanostructures
topic Química
biosensors
catalysis
magnetic properties
melanins
nanostructures
dc.description.none.fl_txt_mv We have prepared ultrathin, nanostructured melanin films on Au- ACHTUNGTRENUNG(111) by means of electrochemical selfassembly. These films were characterized by using Auger electron spectroscopy, X-ray absorption near-edge structure spectroscopy, scanning tunneling microscopy, magnetic force microscopy, and electrochemical techniques. Two types of nanostructures are present in the film: melanin nanoparticles and Fe3O4 nanoparticles. The melanin nanoparticles contain Fe bonded to oxygen-containing phenolic groups in an octahedral configuration similar to that found in Fe2O3. The inorganic– organic composite exhibits magnetic properties and catalyzes the electroreduction of hydrogen peroxide in alkaline and neutral electrolyte solutions. The electrocatalytic activity depends on the Fe-bound melanin and appears to be similar to that found for Fe–porphyrins.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description We have prepared ultrathin, nanostructured melanin films on Au- ACHTUNGTRENUNG(111) by means of electrochemical selfassembly. These films were characterized by using Auger electron spectroscopy, X-ray absorption near-edge structure spectroscopy, scanning tunneling microscopy, magnetic force microscopy, and electrochemical techniques. Two types of nanostructures are present in the film: melanin nanoparticles and Fe3O4 nanoparticles. The melanin nanoparticles contain Fe bonded to oxygen-containing phenolic groups in an octahedral configuration similar to that found in Fe2O3. The inorganic– organic composite exhibits magnetic properties and catalyzes the electroreduction of hydrogen peroxide in alkaline and neutral electrolyte solutions. The electrocatalytic activity depends on the Fe-bound melanin and appears to be similar to that found for Fe–porphyrins.
publishDate 2007
dc.date.none.fl_str_mv 2007
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/108972
url http://sedici.unlp.edu.ar/handle/10915/108972
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1521-3765
info:eu-repo/semantics/altIdentifier/doi/10.1002/chem.200600492
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
473-482
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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