Sonochemical Preparation of Single-Dispersion Metal Nanoparticles from Metal Salts

Novel metal nanoparticles of Pd and Pt were prepared by sonochemical reduction of solutions containing H2PtCl6 or K2PdCl4. The effect of atmospheric gas on the particle size distribution was investigated. Average diameters and standard deviations of the Pd particles prepared under Ar (Pd/Ar) and N2...

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Bibliographic Details
Published in:Chemistry of materials 2001-03, Vol.13 (3), p.1057-1060
Main Authors: Fujimoto, Toshiyuki, Terauchi, Shin-ya, Umehara, Hiroyuki, Kojima, Isao, Henderson, William
Format: Article
Language:English
Subjects:
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
General, apparatus, technics of preparation
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Summary:Novel metal nanoparticles of Pd and Pt were prepared by sonochemical reduction of solutions containing H2PtCl6 or K2PdCl4. The effect of atmospheric gas on the particle size distribution was investigated. Average diameters and standard deviations of the Pd particles prepared under Ar (Pd/Ar) and N2 (Pd/N2) were found to be 3.6 ± 0.7 nm (Pd/Ar) and 2.0 ± 0.3 nm (Pd/N2). Smaller and sharper distribution of the particle size was observed for the Pd particles formed under a N2 atmosphere. In the case of Pt, a smaller and sharper distribution of the particle size was observed for the particles prepared under a Xe atmosphere. These relations can be explained in terms of a hot-spot temperature created by acoustic cavitation.
ISSN:0897-4756
1520-5002
DOI:10.1021/cm000910f