| dc.creator | Díaz, C. | |
| dc.creator | Valenzuela, A. M. L. | |
| dc.creator | Soto, K. | |
| dc.creator | Laguna-Bercero, M. A. | |
| dc.date | 2019-10-30 | |
| dc.date.accessioned | 2019-11-13T15:11:55Z | |
| dc.date.available | 2019-11-13T15:11:55Z | |
| dc.identifier | http://www.jcchems.com/index.php/JCCHEMS/article/view/1311 | |
| dc.identifier.uri | https://revistaschilenas.uchile.cl/handle/2250/112771 | |
| dc.description | 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. | en-US |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | Sociedad Chilena de Química | en-US |
| dc.relation | http://www.jcchems.com/index.php/JCCHEMS/article/view/1311/326 | |
| dc.source | Journal of the Chilean Chemical Society; Vol 64 No 3 (2019): Journal of the Chilean Chemical Society; 4502-4506 | en-US |
| dc.source | 0717-9707 | |
| dc.source | 0717-9324 | |
| dc.subject | Gold nanoparticles | en-US |
| dc.subject | Silver nanoparticles | en-US |
| dc.subject | silica | en-US |
| dc.subject | composites | en-US |
| dc.title | INCORPORATION OF AU AND AG NANOSTRUCTURES INSIDE SIO2 | en-US |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
