INCORPORATION OF AU AND AG NANOSTRUCTURES INSIDE SIO2

ABSTRACT Incorporation 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)m Similarly, the incorporation of Ag° inside SiO2 it was made from thermal treatmen...

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Autores principales:	Diaz,C., Valenzuela,A. M. L., Soto,K., Laguna-Bercero,M. A.
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2019
Materias:	Gold nanoparticles Silver nanoparticles silica composites
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000304502
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spelling	oai:scielo:S0717-970720190003045022019-11-06INCORPORATION OF AU AND AG NANOSTRUCTURES INSIDE SIO2Diaz,C.Valenzuela,A. M. L.Soto,K.Laguna-Bercero,M. A. Gold nanoparticles Silver nanoparticles silica composites ABSTRACT Incorporation 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)m Similarly, 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.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.64 n.3 20192019-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000304502en10.4067/S0717-97072019000304502
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Gold nanoparticles Silver nanoparticles silica composites
spellingShingle	Gold nanoparticles Silver nanoparticles silica composites Diaz,C. Valenzuela,A. M. L. Soto,K. Laguna-Bercero,M. A. INCORPORATION OF AU AND AG NANOSTRUCTURES INSIDE SIO2
description	ABSTRACT Incorporation 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)m Similarly, 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.
author	Diaz,C. Valenzuela,A. M. L. Soto,K. Laguna-Bercero,M. A.
author_facet	Diaz,C. Valenzuela,A. M. L. Soto,K. Laguna-Bercero,M. A.
author_sort	Diaz,C.
title	INCORPORATION OF AU AND AG NANOSTRUCTURES INSIDE SIO2
title_short	INCORPORATION OF AU AND AG NANOSTRUCTURES INSIDE SIO2
title_full	INCORPORATION OF AU AND AG NANOSTRUCTURES INSIDE SIO2
title_fullStr	INCORPORATION OF AU AND AG NANOSTRUCTURES INSIDE SIO2
title_full_unstemmed	INCORPORATION OF AU AND AG NANOSTRUCTURES INSIDE SIO2
title_sort	incorporation of au and ag nanostructures inside sio2
publisher	Sociedad Chilena de Química
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000304502
work_keys_str_mv	AT diazc incorporationofauandagnanostructuresinsidesio2 AT valenzuelaaml incorporationofauandagnanostructuresinsidesio2 AT sotok incorporationofauandagnanostructuresinsidesio2 AT lagunaberceroma incorporationofauandagnanostructuresinsidesio2
_version_	1714200939637768192

INCORPORATION OF AU AND AG NANOSTRUCTURES INSIDE SIO2

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