Metallic particles from complexing microcapsules dispersed in a silica gel
A new process to control the distribution of metal nanoparticles is proposed. It involves the use of complexing microcapsules obtained by interfacial polycondensation. The latter are hollow spheres constituted of a polymer membrane, containing an insoluble active ingredient, such as a polyacrylic ac...
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| Veröffentlicht in: | Journal of sol-gel science and technology 2002-12, Vol.25 (3), p.207-213 |
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| container_title | Journal of sol-gel science and technology |
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| creator | RICHARD-PLOUET, Mireille GUILLE, Jean-Louis FRERE, Yves DANICHER, Louis |
| description | A new process to control the distribution of metal nanoparticles is proposed. It involves the use of complexing microcapsules obtained by interfacial polycondensation. The latter are hollow spheres constituted of a polymer membrane, containing an insoluble active ingredient, such as a polyacrylic acid, which can complex Co2+ ions. These capsules are dispersed in a silica sol followed by thermal treatments and reduction under H2 which results in metallic Co nanoparticles confined in the capsules domains. The particles do not diffuse in the matrix. |
| doi_str_mv | 10.1023/A:1020291423945 |
| format | Article |
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It involves the use of complexing microcapsules obtained by interfacial polycondensation. The latter are hollow spheres constituted of a polymer membrane, containing an insoluble active ingredient, such as a polyacrylic acid, which can complex Co2+ ions. These capsules are dispersed in a silica sol followed by thermal treatments and reduction under H2 which results in metallic Co nanoparticles confined in the capsules domains. The particles do not diffuse in the matrix.</description><identifier>ISSN: 0928-0707</identifier><identifier>EISSN: 1573-4846</identifier><identifier>DOI: 10.1023/A:1020291423945</identifier><language>eng</language><publisher>Heidelberg: Springer</publisher><subject>Chemistry ; Cobalt ; Colloidal gels. 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| identifier | ISSN: 0928-0707 |
| ispartof | Journal of sol-gel science and technology, 2002-12, Vol.25 (3), p.207-213 |
| issn | 0928-0707 1573-4846 |
| language | eng |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Chemistry Cobalt Colloidal gels. Colloidal sols Colloidal state and disperse state Domains Exact sciences and technology General and physical chemistry Metal particles Nanoparticles Polyacrylic acid Silica gel Silicon dioxide |
| title | Metallic particles from complexing microcapsules dispersed in a silica gel |
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