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dc.contributor.authorDiaz C.
dc.contributor.authorValenzuela A.M.L.
dc.contributor.authorSoto K.
dc.contributor.authorLaguna-Bercero M.A.
dc.date.accessioned2020-09-02T22:16:38Z
dc.date.available2020-09-02T22:16:38Z
dc.date.issued2019
dc.identifier10.4067/S0717-97072019000304502
dc.identifier.citation64, 3, 4502-4506
dc.identifier.issn07179324
dc.identifier.urihttps://hdl.handle.net/20.500.12728/4270
dc.descriptionIncorporation of Au° inside SiO2 was achieved by a solid-state method from the pyrolysis of the composites (Chitosan)•(AuCl3)n•(SiO2)m and (PS-co-4-PVP)•(AuCl3)n•(SiO2)mSimilarly, the incorporation of Ag° inside SiO2 it was made from thermal treatment of the composites (Chitosan)•(AgNO3)n•(SiO2)m and (PS-co-4-PVP)•(AgNO3)n•(SiO2)m. The nature of the polymer controls the particle size for the Au/SiO2 composite, while that for the Ag/SiO2 both, polymer Chitosan and PS-co-4-PVP, produces similar particle size. In the case of the composite Ag/SiO2 the particle size as small as 5 nm were obtained. The 1:1 or 1:5 metal/polymer ratios, as well as the nature of the polymer in the macromolecular precursors (Chitosan)•(AuCl3)n•(SiO2)m and (PS-co-4-PVP)•(AuCl3)n•(SiO2)m influences the dispersion of the Au° nanostructures inside SiO2 matrix. The results are compared with those previously obtained for bimetallic composites Au/Ag//SiO2. A formation mechanism of the Au°/SiO2 and Ag°/SiO2 composites involving the combustion of the organic matter and the growth of the Au° and Ag° nanoparticles inside the holes, generated from the combustion process, is proposed. © 2019 Sociedad Chilena de Quimica. All rights reserved.
dc.language.isoen
dc.publisherSociedad Chilena de Quimica
dc.subjectComposites
dc.subjectGold nanoparticles
dc.subjectSilica
dc.subjectSilver nanoparticles
dc.titleIncorporation of Au and Ag nanostructures inside SiO2
dc.typeArticle


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