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Metallic Particles from Complexing Microcapsules Dispersed in a Silica Gel

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Abstract

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.

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Authors and Affiliations

  1. Groupe des Matériaux Inorganiques Institut de Physique et de Chimie des Matériaux de Strasbourg, UMR 7504, 23, rue du Loess, 67037, Strasbourg Cedex, France

    Mireille Richard-Plouet & Jean-Louis Guille

  2. Institut Charles Sadron, (UPR 22) 6, rue Boussingault, 67083, Strasbourg Cedex, France

    Yves Frere & Louis Danicher

Authors
  1. Mireille Richard-Plouet
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  2. Jean-Louis Guille
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  3. Yves Frere
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  4. Louis Danicher
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Richard-Plouet, M., Guille, JL., Frere, Y. et al. Metallic Particles from Complexing Microcapsules Dispersed in a Silica Gel. Journal of Sol-Gel Science and Technology 25, 207–213 (2002). https://doi.org/10.1023/A:1020291423945

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  • DOI: https://doi.org/10.1023/A:1020291423945

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