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dc.contributor.author
Aguirre, Matías Ezequiel
dc.contributor.author
Custo, G
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Goes, Marcio S.
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Bueno, Paulo R.
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Zampieri, Guillermo Enrique
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Grela, Maria Alejandra
dc.date.available
2017-10-03T17:11:03Z
dc.date.issued
2014-02
dc.identifier.citation
Aguirre, Matías Ezequiel; Custo, G; Goes, Marcio S.; Bueno, Paulo R.; Zampieri, Guillermo Enrique; et al.; Critical Water Effect on the Plasmon Band and Visible Light Activity of Au/ZnO Nanocomposites; American Chemical Society; Journal of Physical Chemistry C; 118; 4; 2-2014; 2018-2027
dc.identifier.issn
1932-7447
dc.identifier.uri
http://hdl.handle.net/11336/25771
dc.description.abstract
Small amounts of water (between and 0.05 and 0.35% V/V) critically determine the morphology and plasmon band of Au/ZnO nanostructures obtained by Au3+ photoreduction on ZnO nanoparticles dispersed in 2-propanol. All the synthesized materials exhibit plasmon induced activity to drive the solvent oxidation; however, the temporal evolution of acetone shows a clear induction time followed by the sudden boost in the rate of the oxidation product, which depends on the photodeposition conditions. Xray photoelectron spectroscopy (XPS) indicates that visible irradiation produces the transformation of surface Au(0) in Au(+). Besides, an increment in the ZnO surface area ascribed to the photoinduced fragmentation of aggregated networks of Au/ZnO nanocomposites is evidenced by XPS and simple adsorption experiments. The changes in the surface properties correlate with the onset in the catalytic activity. Possible mechanisms are discussed to account for the experimental findings.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Plasmonic Photocatalysis
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Nanocomposite
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Au
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Zno
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Otras Ciencias Químicas
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Critical Water Effect on the Plasmon Band and Visible Light Activity of Au/ZnO Nanocomposites
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-09-29T14:44:00Z
dc.journal.volume
118
dc.journal.number
4
dc.journal.pagination
2018-2027
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Washington
dc.description.fil
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; Argentina
dc.description.fil
Fil: Custo, G. Comisión Nacional de Energía Atómica; Argentina
dc.description.fil
Fil: Goes, Marcio S.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
dc.description.fil
Fil: Bueno, Paulo R.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
dc.description.fil
Fil: Zampieri, Guillermo Enrique. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
dc.description.fil
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; Argentina
dc.journal.title
Journal of Physical Chemistry C
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/jp410304q
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/jp410304q


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