Ag@ZnO Core–Shell Nanoparticles Formed by the Timely Reduction of Ag + Ions and Zinc Acetate Hydrolysis in N , N -Dimethylformamide: Mechanism of Growth and Photocatalytic Properti...

Autores
Aguirre, Matías Ezequiel; Rodriguez, Hernan Bernardo; San Roman, Enrique Arnoldo; Feldhoff, Armin; Grela, Maria Alejandra
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A new synthetic route for the preparation of Ag ZnO hybrid nanostructures under well-defined conditions using silver nitrate and zinc acetate in N,N-dimethylformamide as starting materials is presented. The solvent simultaneously behaves as a reducing agent for Ag+ ions and provides the basic medium for zinc acetate hydrolysis at room temperature, without making resource of stabilizers and any kind of additives. As determined by electron microscopy studies, the prepared nanostructures have well-defined core shell architectures, with a cover layer of ZnO protecting the Ag center from oxidation by external agents. Intermediates and final products were further characterized by FTIR, XRD, ICP-OES, and UV vis absorption and luminescence spectroscopy. The change in the emission properties of ZnO as a result of the assemblage proves the strong interaction existing between the semiconductor and the metallic nucleus and points to an efficient electron transfer from ZnO to Ag. Accordingly, comparative photocatalytic experiments of ZnO and Ag@ZnO nanostructures loaded with the chelating xanthene dye, 9-phenyl-2,3,7-trihidroxy-6-fluorone, confirm that the presence of Ag nanoparticles in the hybrid nanostructures serves to slow down charge recombination both under UV and visible light excitation.
Fil: Aguirre, Matías Ezequiel. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina
Fil: Rodriguez, Hernan Bernardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: San Roman, Enrique Arnoldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Feldhoff, Armin. Leibniz Universitat Hannover; Alemania
Fil: Grela, Maria Alejandra. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina
Materia
nanocomposites
hybrid structures
Ag@ZnO
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:11336/278624
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Ag@ZnO Core–Shell Nanoparticles Formed by the Timely Reduction of Ag + Ions and Zinc Acetate Hydrolysis in N , N -Dimethylformamide: Mechanism of Growth and Photocatalytic PropertiesAguirre, Matías EzequielRodriguez, Hernan BernardoSan Roman, Enrique ArnoldoFeldhoff, ArminGrela, Maria Alejandrananocompositeshybrid structuresAg@ZnOhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1A new synthetic route for the preparation of Ag ZnO hybrid nanostructures under well-defined conditions using silver nitrate and zinc acetate in N,N-dimethylformamide as starting materials is presented. The solvent simultaneously behaves as a reducing agent for Ag+ ions and provides the basic medium for zinc acetate hydrolysis at room temperature, without making resource of stabilizers and any kind of additives. As determined by electron microscopy studies, the prepared nanostructures have well-defined core shell architectures, with a cover layer of ZnO protecting the Ag center from oxidation by external agents. Intermediates and final products were further characterized by FTIR, XRD, ICP-OES, and UV vis absorption and luminescence spectroscopy. The change in the emission properties of ZnO as a result of the assemblage proves the strong interaction existing between the semiconductor and the metallic nucleus and points to an efficient electron transfer from ZnO to Ag. Accordingly, comparative photocatalytic experiments of ZnO and Ag@ZnO nanostructures loaded with the chelating xanthene dye, 9-phenyl-2,3,7-trihidroxy-6-fluorone, confirm that the presence of Ag nanoparticles in the hybrid nanostructures serves to slow down charge recombination both under UV and visible light excitation.Fil: Aguirre, Matías Ezequiel. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; ArgentinaFil: Rodriguez, Hernan Bernardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaFil: San Roman, Enrique Arnoldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaFil: Feldhoff, Armin. Leibniz Universitat Hannover; AlemaniaFil: Grela, Maria Alejandra. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; ArgentinaAmerican Chemical Society2011-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/278624Aguirre, Matías Ezequiel; Rodriguez, Hernan Bernardo; San Roman, Enrique Arnoldo; Feldhoff, Armin; Grela, Maria Alejandra; Ag@ZnO Core–Shell Nanoparticles Formed by the Timely Reduction of Ag + Ions and Zinc Acetate Hydrolysis in N , N -Dimethylformamide: Mechanism of Growth and Photocatalytic Properties; American Chemical Society; Journal of Physical Chemistry C; 115; 50; 11-2011; 24967-249741932-7447CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/jp209117sinfo:eu-repo/semantics/altIdentifier/doi/10.1021/jp209117sinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-01-14T12:18:26Zoai:ri.conicet.gov.ar:11336/278624instacron: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:34982026-01-14 12:18:26.606CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ag@ZnO Core–Shell Nanoparticles Formed by the Timely Reduction of Ag + Ions and Zinc Acetate Hydrolysis in N , N -Dimethylformamide: Mechanism of Growth and Photocatalytic Properties
title Ag@ZnO Core–Shell Nanoparticles Formed by the Timely Reduction of Ag + Ions and Zinc Acetate Hydrolysis in N , N -Dimethylformamide: Mechanism of Growth and Photocatalytic Properties
spellingShingle Ag@ZnO Core–Shell Nanoparticles Formed by the Timely Reduction of Ag + Ions and Zinc Acetate Hydrolysis in N , N -Dimethylformamide: Mechanism of Growth and Photocatalytic Properties
Aguirre, Matías Ezequiel
nanocomposites
hybrid structures
Ag@ZnO
title_short Ag@ZnO Core–Shell Nanoparticles Formed by the Timely Reduction of Ag + Ions and Zinc Acetate Hydrolysis in N , N -Dimethylformamide: Mechanism of Growth and Photocatalytic Properties
title_full Ag@ZnO Core–Shell Nanoparticles Formed by the Timely Reduction of Ag + Ions and Zinc Acetate Hydrolysis in N , N -Dimethylformamide: Mechanism of Growth and Photocatalytic Properties
title_fullStr Ag@ZnO Core–Shell Nanoparticles Formed by the Timely Reduction of Ag + Ions and Zinc Acetate Hydrolysis in N , N -Dimethylformamide: Mechanism of Growth and Photocatalytic Properties
title_full_unstemmed Ag@ZnO Core–Shell Nanoparticles Formed by the Timely Reduction of Ag + Ions and Zinc Acetate Hydrolysis in N , N -Dimethylformamide: Mechanism of Growth and Photocatalytic Properties
title_sort Ag@ZnO Core–Shell Nanoparticles Formed by the Timely Reduction of Ag + Ions and Zinc Acetate Hydrolysis in N , N -Dimethylformamide: Mechanism of Growth and Photocatalytic Properties
dc.creator.none.fl_str_mv Aguirre, Matías Ezequiel
Rodriguez, Hernan Bernardo
San Roman, Enrique Arnoldo
Feldhoff, Armin
Grela, Maria Alejandra
author Aguirre, Matías Ezequiel
author_facet Aguirre, Matías Ezequiel
Rodriguez, Hernan Bernardo
San Roman, Enrique Arnoldo
Feldhoff, Armin
Grela, Maria Alejandra
author_role author
author2 Rodriguez, Hernan Bernardo
San Roman, Enrique Arnoldo
Feldhoff, Armin
Grela, Maria Alejandra
author2_role author
author
author
author
dc.subject.none.fl_str_mv nanocomposites
hybrid structures
Ag@ZnO
topic nanocomposites
hybrid structures
Ag@ZnO
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A new synthetic route for the preparation of Ag ZnO hybrid nanostructures under well-defined conditions using silver nitrate and zinc acetate in N,N-dimethylformamide as starting materials is presented. The solvent simultaneously behaves as a reducing agent for Ag+ ions and provides the basic medium for zinc acetate hydrolysis at room temperature, without making resource of stabilizers and any kind of additives. As determined by electron microscopy studies, the prepared nanostructures have well-defined core shell architectures, with a cover layer of ZnO protecting the Ag center from oxidation by external agents. Intermediates and final products were further characterized by FTIR, XRD, ICP-OES, and UV vis absorption and luminescence spectroscopy. The change in the emission properties of ZnO as a result of the assemblage proves the strong interaction existing between the semiconductor and the metallic nucleus and points to an efficient electron transfer from ZnO to Ag. Accordingly, comparative photocatalytic experiments of ZnO and Ag@ZnO nanostructures loaded with the chelating xanthene dye, 9-phenyl-2,3,7-trihidroxy-6-fluorone, confirm that the presence of Ag nanoparticles in the hybrid nanostructures serves to slow down charge recombination both under UV and visible light excitation.
Fil: Aguirre, Matías Ezequiel. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina
Fil: Rodriguez, Hernan Bernardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: San Roman, Enrique Arnoldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Feldhoff, Armin. Leibniz Universitat Hannover; Alemania
Fil: Grela, Maria Alejandra. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina
description A new synthetic route for the preparation of Ag ZnO hybrid nanostructures under well-defined conditions using silver nitrate and zinc acetate in N,N-dimethylformamide as starting materials is presented. The solvent simultaneously behaves as a reducing agent for Ag+ ions and provides the basic medium for zinc acetate hydrolysis at room temperature, without making resource of stabilizers and any kind of additives. As determined by electron microscopy studies, the prepared nanostructures have well-defined core shell architectures, with a cover layer of ZnO protecting the Ag center from oxidation by external agents. Intermediates and final products were further characterized by FTIR, XRD, ICP-OES, and UV vis absorption and luminescence spectroscopy. The change in the emission properties of ZnO as a result of the assemblage proves the strong interaction existing between the semiconductor and the metallic nucleus and points to an efficient electron transfer from ZnO to Ag. Accordingly, comparative photocatalytic experiments of ZnO and Ag@ZnO nanostructures loaded with the chelating xanthene dye, 9-phenyl-2,3,7-trihidroxy-6-fluorone, confirm that the presence of Ag nanoparticles in the hybrid nanostructures serves to slow down charge recombination both under UV and visible light excitation.
publishDate 2011
dc.date.none.fl_str_mv 2011-11
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/11336/278624
Aguirre, Matías Ezequiel; Rodriguez, Hernan Bernardo; San Roman, Enrique Arnoldo; Feldhoff, Armin; Grela, Maria Alejandra; Ag@ZnO Core–Shell Nanoparticles Formed by the Timely Reduction of Ag + Ions and Zinc Acetate Hydrolysis in N , N -Dimethylformamide: Mechanism of Growth and Photocatalytic Properties; American Chemical Society; Journal of Physical Chemistry C; 115; 50; 11-2011; 24967-24974
1932-7447
CONICET Digital
CONICET
url http://hdl.handle.net/11336/278624
identifier_str_mv Aguirre, Matías Ezequiel; Rodriguez, Hernan Bernardo; San Roman, Enrique Arnoldo; Feldhoff, Armin; Grela, Maria Alejandra; Ag@ZnO Core–Shell Nanoparticles Formed by the Timely Reduction of Ag + Ions and Zinc Acetate Hydrolysis in N , N -Dimethylformamide: Mechanism of Growth and Photocatalytic Properties; American Chemical Society; Journal of Physical Chemistry C; 115; 50; 11-2011; 24967-24974
1932-7447
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/jp209117s
info:eu-repo/semantics/altIdentifier/doi/10.1021/jp209117s
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 American Chemical Society
publisher.none.fl_str_mv American Chemical Society
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 13.113929

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