Stabilization of rhodium nanoparticles in an aqueous medium by polymer and layered silicates

Szilvia Papp; Jozsef Szel; Imre Dékány

doi:10.1117/12.501999

29 April 2003 Stabilization of rhodium nanoparticles in an aqueous medium by polymer and layered silicates

Szilvia Papp, Jozsef Szel, Imre Dékány

Proceedings Volume 5118, Nanotechnology; (2003) https://doi.org/10.1117/12.501999
Event: Microtechnologies for the New Millennium 2003, 2003, Maspalomas, Gran Canaria, Canary Islands, Spain

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.

Citation Download Citation

Szilvia Papp, Jozsef Szel, and Imre Dékány "Stabilization of rhodium nanoparticles in an aqueous medium by polymer and layered silicates", Proc. SPIE 5118, Nanotechnology, (29 April 2003); https://doi.org/10.1117/12.501999

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