Optical absorption of Ag particles dispersed in a SiO2 amorphous matrix
Composite materials of Ag species embedded in SiO2 matrix were prepared by the sol-gel method. Two kinds of sample preparation were used. In the first one, the Ag aggregates were synthesized using two different reduction solutions, obtaining fine particles with a quasi-spherical shape and particles...
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| Veröffentlicht in: | Journal of sol-gel science and technology 2005-11, Vol.36 (2), p.137-145 |
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| container_title | Journal of sol-gel science and technology |
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| creator | MARTINEZ-CASTANON, G MARTINEZ, J. R ORTEGA ZARZOSA, G RUIZ, Facundo SANCHEZ-LOREDO, M. G |
| description | Composite materials of Ag species embedded in SiO2 matrix were prepared by the sol-gel method. Two kinds of sample preparation were used. In the first one, the Ag aggregates were synthesized using two different reduction solutions, obtaining fine particles with a quasi-spherical shape and particles with a dendrite-like form, that were later added to the SiO2 matrix. In the second one, the Ag aggregates were formed in the SiO2 matrix from silver nitrate solutions. The prepared samples were annealed in air at different temperatures. By using uv-visible spectroscopy, X-ray diffraction, EDS, DTA, TGA and SEM, the structures of all the samples were studied. It was found that the embedded species and the heat treatments modify strongly the optical properties of the samples. |
| doi_str_mv | 10.1007/s10971-005-5285-2 |
| format | Article |
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R ; ORTEGA ZARZOSA, G ; RUIZ, Facundo ; SANCHEZ-LOREDO, M. G</creator><creatorcontrib>MARTINEZ-CASTANON, G ; MARTINEZ, J. R ; ORTEGA ZARZOSA, G ; RUIZ, Facundo ; SANCHEZ-LOREDO, M. G</creatorcontrib><description>Composite materials of Ag species embedded in SiO2 matrix were prepared by the sol-gel method. Two kinds of sample preparation were used. In the first one, the Ag aggregates were synthesized using two different reduction solutions, obtaining fine particles with a quasi-spherical shape and particles with a dendrite-like form, that were later added to the SiO2 matrix. In the second one, the Ag aggregates were formed in the SiO2 matrix from silver nitrate solutions. The prepared samples were annealed in air at different temperatures. By using uv-visible spectroscopy, X-ray diffraction, EDS, DTA, TGA and SEM, the structures of all the samples were studied. It was found that the embedded species and the heat treatments modify strongly the optical properties of the samples.</description><identifier>ISSN: 0928-0707</identifier><identifier>EISSN: 1573-4846</identifier><identifier>DOI: 10.1007/s10971-005-5285-2</identifier><language>eng</language><publisher>Heidelberg: Springer</publisher><subject>Aggregates ; Amorphous materials ; Chemistry ; Colloidal gels. Colloidal sols ; Colloidal state and disperse state ; Composite materials ; Dendritic structure ; Exact sciences and technology ; General and physical chemistry ; Optical properties ; Silicon dioxide ; Silver ; Sol-gel processes ; X-ray diffraction</subject><ispartof>Journal of sol-gel science and technology, 2005-11, Vol.36 (2), p.137-145</ispartof><rights>2006 INIST-CNRS</rights><rights>Journal of Sol-Gel Science and Technology is a copyright of Springer, (2005). 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G</creatorcontrib><title>Optical absorption of Ag particles dispersed in a SiO2 amorphous matrix</title><title>Journal of sol-gel science and technology</title><description>Composite materials of Ag species embedded in SiO2 matrix were prepared by the sol-gel method. Two kinds of sample preparation were used. In the first one, the Ag aggregates were synthesized using two different reduction solutions, obtaining fine particles with a quasi-spherical shape and particles with a dendrite-like form, that were later added to the SiO2 matrix. In the second one, the Ag aggregates were formed in the SiO2 matrix from silver nitrate solutions. The prepared samples were annealed in air at different temperatures. By using uv-visible spectroscopy, X-ray diffraction, EDS, DTA, TGA and SEM, the structures of all the samples were studied. It was found that the embedded species and the heat treatments modify strongly the optical properties of the samples.</description><subject>Aggregates</subject><subject>Amorphous materials</subject><subject>Chemistry</subject><subject>Colloidal gels. Colloidal sols</subject><subject>Colloidal state and disperse state</subject><subject>Composite materials</subject><subject>Dendritic structure</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Optical properties</subject><subject>Silicon dioxide</subject><subject>Silver</subject><subject>Sol-gel processes</subject><subject>X-ray diffraction</subject><issn>0928-0707</issn><issn>1573-4846</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNpdkE1LAzEQhoMoWKs_wFtA9BadfG2SYylahUIP6jmk2aymbHfXZAv6701pQfA0A_O8w8uD0DWFewqgHjIFoygBkEQyLQk7QRMqFSdCi-oUTcAwTUCBOkcXOW-ggIKqCVqshjF612K3zn0qe9_hvsGzDzy4VC5tyLiOeQgphxrHDjv8GlcMu22hP_tdxls3pvh9ic4a1-ZwdZxT9P70-DZ_JsvV4mU-WxLPuRiJbkSoK-0ZN4IDiNKqNnXDuHYetBbBKwmOC3BaBme4rrjxweg1UGAK1nyK7g5_h9R_7UIe7TZmH9rWdaG0scxQLbmGAt78Azf9LnWlm2VMGllVWu0peqB86nNOobFDiluXfiwFuxdrD2Jt8WX3Yi0rmdvjZ5eLuSa5zsf8F1RMakop_wUXWHYJ</recordid><startdate>20051101</startdate><enddate>20051101</enddate><creator>MARTINEZ-CASTANON, G</creator><creator>MARTINEZ, J. 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| ispartof | Journal of sol-gel science and technology, 2005-11, Vol.36 (2), p.137-145 |
| issn | 0928-0707 1573-4846 |
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| subjects | Aggregates Amorphous materials Chemistry Colloidal gels. Colloidal sols Colloidal state and disperse state Composite materials Dendritic structure Exact sciences and technology General and physical chemistry Optical properties Silicon dioxide Silver Sol-gel processes X-ray diffraction |
| title | Optical absorption of Ag particles dispersed in a SiO2 amorphous matrix |
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