Oxidation of copper nanoparticles in water: mechanistic insights revealed by oxygen uptake and spectroscopic methods

Autores
Pacioni, Natalia Lorena; Filippenko, Vasilisa; Presseau, Nathalie; Scaiano, Juan Cesar
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Oxidation of aqueous ∼8 nm unprotected copper nanoparticles takes place under air in approximately 2 hours at 30 °C to give Cu2+ as a final product through an intermediate Cu+ species. At 5 °C the process is about 5 times slower; similarly, vitamin C, which plays a sacrificial role, also slows down the oxidation, while CuNP catalyses the oxidation. In this work, we present a detailed analysis of the oxidation mechanism of colloidal CuNP inferred through spectroscopic methods (UV-visible and EPR) combined with oxygen uptake measurements, with emphasis on factors affecting the oxidative process.
Fil: Pacioni, Natalia Lorena. University of Ottawa; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Filippenko, Vasilisa. University of Ottawa; Canadá
Fil: Presseau, Nathalie. University of Ottawa; Canadá
Fil: Scaiano, Juan Cesar. University of Ottawa; Canadá
Materia
Copper Nanoparticles
Air Oxidation
Epr
Oxygen Uptake
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/25188
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Oxidation of copper nanoparticles in water: mechanistic insights revealed by oxygen uptake and spectroscopic methodsPacioni, Natalia LorenaFilippenko, VasilisaPresseau, NathalieScaiano, Juan CesarCopper NanoparticlesAir OxidationEprOxygen Uptakehttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Oxidation of aqueous ∼8 nm unprotected copper nanoparticles takes place under air in approximately 2 hours at 30 °C to give Cu2+ as a final product through an intermediate Cu+ species. At 5 °C the process is about 5 times slower; similarly, vitamin C, which plays a sacrificial role, also slows down the oxidation, while CuNP catalyses the oxidation. In this work, we present a detailed analysis of the oxidation mechanism of colloidal CuNP inferred through spectroscopic methods (UV-visible and EPR) combined with oxygen uptake measurements, with emphasis on factors affecting the oxidative process.Fil: Pacioni, Natalia Lorena. University of Ottawa; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Filippenko, Vasilisa. University of Ottawa; CanadáFil: Presseau, Nathalie. University of Ottawa; CanadáFil: Scaiano, Juan Cesar. University of Ottawa; CanadáRoyal Society of Chemistry2013-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/25188Pacioni, Natalia Lorena; Filippenko, Vasilisa; Presseau, Nathalie; Scaiano, Juan Cesar; Oxidation of copper nanoparticles in water: mechanistic insights revealed by oxygen uptake and spectroscopic methods; Royal Society of Chemistry; Dalton Transactions; 42; 16; 2-2013; 5832-58381477-9226CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1039/c3dt32836hinfo:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/Content/ArticleLanding/2013/DT/c3dt32836h#!divAbstractinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:47:47Zoai:ri.conicet.gov.ar:11336/25188instacron: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 09:47:47.546CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Oxidation of copper nanoparticles in water: mechanistic insights revealed by oxygen uptake and spectroscopic methods
title Oxidation of copper nanoparticles in water: mechanistic insights revealed by oxygen uptake and spectroscopic methods
spellingShingle Oxidation of copper nanoparticles in water: mechanistic insights revealed by oxygen uptake and spectroscopic methods
Pacioni, Natalia Lorena
Copper Nanoparticles
Air Oxidation
Epr
Oxygen Uptake
title_short Oxidation of copper nanoparticles in water: mechanistic insights revealed by oxygen uptake and spectroscopic methods
title_full Oxidation of copper nanoparticles in water: mechanistic insights revealed by oxygen uptake and spectroscopic methods
title_fullStr Oxidation of copper nanoparticles in water: mechanistic insights revealed by oxygen uptake and spectroscopic methods
title_full_unstemmed Oxidation of copper nanoparticles in water: mechanistic insights revealed by oxygen uptake and spectroscopic methods
title_sort Oxidation of copper nanoparticles in water: mechanistic insights revealed by oxygen uptake and spectroscopic methods
dc.creator.none.fl_str_mv Pacioni, Natalia Lorena
Filippenko, Vasilisa
Presseau, Nathalie
Scaiano, Juan Cesar
author Pacioni, Natalia Lorena
author_facet Pacioni, Natalia Lorena
Filippenko, Vasilisa
Presseau, Nathalie
Scaiano, Juan Cesar
author_role author
author2 Filippenko, Vasilisa
Presseau, Nathalie
Scaiano, Juan Cesar
author2_role author
author
author
dc.subject.none.fl_str_mv Copper Nanoparticles
Air Oxidation
Epr
Oxygen Uptake
topic Copper Nanoparticles
Air Oxidation
Epr
Oxygen Uptake
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Oxidation of aqueous ∼8 nm unprotected copper nanoparticles takes place under air in approximately 2 hours at 30 °C to give Cu2+ as a final product through an intermediate Cu+ species. At 5 °C the process is about 5 times slower; similarly, vitamin C, which plays a sacrificial role, also slows down the oxidation, while CuNP catalyses the oxidation. In this work, we present a detailed analysis of the oxidation mechanism of colloidal CuNP inferred through spectroscopic methods (UV-visible and EPR) combined with oxygen uptake measurements, with emphasis on factors affecting the oxidative process.
Fil: Pacioni, Natalia Lorena. University of Ottawa; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Filippenko, Vasilisa. University of Ottawa; Canadá
Fil: Presseau, Nathalie. University of Ottawa; Canadá
Fil: Scaiano, Juan Cesar. University of Ottawa; Canadá
description Oxidation of aqueous ∼8 nm unprotected copper nanoparticles takes place under air in approximately 2 hours at 30 °C to give Cu2+ as a final product through an intermediate Cu+ species. At 5 °C the process is about 5 times slower; similarly, vitamin C, which plays a sacrificial role, also slows down the oxidation, while CuNP catalyses the oxidation. In this work, we present a detailed analysis of the oxidation mechanism of colloidal CuNP inferred through spectroscopic methods (UV-visible and EPR) combined with oxygen uptake measurements, with emphasis on factors affecting the oxidative process.
publishDate 2013
dc.date.none.fl_str_mv 2013-02
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/11336/25188
Pacioni, Natalia Lorena; Filippenko, Vasilisa; Presseau, Nathalie; Scaiano, Juan Cesar; Oxidation of copper nanoparticles in water: mechanistic insights revealed by oxygen uptake and spectroscopic methods; Royal Society of Chemistry; Dalton Transactions; 42; 16; 2-2013; 5832-5838
1477-9226
CONICET Digital
CONICET
url http://hdl.handle.net/11336/25188
identifier_str_mv Pacioni, Natalia Lorena; Filippenko, Vasilisa; Presseau, Nathalie; Scaiano, Juan Cesar; Oxidation of copper nanoparticles in water: mechanistic insights revealed by oxygen uptake and spectroscopic methods; Royal Society of Chemistry; Dalton Transactions; 42; 16; 2-2013; 5832-5838
1477-9226
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1039/c3dt32836h
info:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/Content/ArticleLanding/2013/DT/c3dt32836h#!divAbstract
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
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
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
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score 13.070432

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