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

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 microsco...

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Detalles Bibliográficos
Autores principales: 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
Formato: Articulo
Lenguaje:Inglés
Publicado: 2007
Materias:
Química
biosensors
catalysis
magnetic properties
melanins
nanostructures
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/108972
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-108972
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
biosensors
catalysis
magnetic properties
melanins
nanostructures
spellingShingle Química
biosensors
catalysis
magnetic properties
melanins
nanostructures
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
Electrocatalytic and Magnetic Properties of Ultrathin Nanostructured Iron–Melanin Films on Au(111)
topic_facet Química
biosensors
catalysis
magnetic properties
melanins
nanostructures
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.
format Articulo
Articulo
author 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_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_sort González Orive, Alejandro
title Electrocatalytic and Magnetic Properties of Ultrathin Nanostructured Iron–Melanin Films on Au(111)
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)
publishDate 2007
url http://sedici.unlp.edu.ar/handle/10915/108972
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