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Proceedings Paper

Stabilization of rhodium nanoparticles in an aqueous medium by polymer and layered silicates
Author(s): Szilvia Papp; Jozsef Szel; Imre Dékány
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Paper Abstract

The synthesis of rhodium nanoparticles was studied in aqueous polymer solution and on layerd montmorillonite and kaolinite minerals. The effect of the concentration of the rhodium precursor and polymer on the size of the particles formed was studied using neutral polivinylpyrrolidone. Reduction was done by sodium borohydride. Expansion of the interlayer space in kaolinite was effected by intercalation of dimethyl sulfoxide at 65°C. Interlamellar incorporation of nanoparticles was monitored by x-ray diffraction and small angle x-ray scattering, the size and the size distribution function were determined by transmission electron microscopy. Average particle size fell in the range of 1-3 nm, depending on the stabilization method used and the concentration of precursor rhodium ions. The valence of the rhodium particles on the support surface was examined by XPS analysis.

Paper Details

Date Published: 29 April 2003
PDF: 11 pages
Proc. SPIE 5118, Nanotechnology, (29 April 2003); doi: 10.1117/12.501999
Show Author Affiliations
Szilvia Papp, Univ. of Szeged (Hungary)
Jozsef Szel, Univ. of Szeged (Hungary)
Imre Dékány, Univ. of Szeged (Hungary)

Published in SPIE Proceedings Vol. 5118:
Robert Vajtai; Xavier Aymerich; Laszlo B. Kish; Angel Rubio, Editor(s)

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