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Science 28 June 1996:
Vol. 272. no. 5270, pp. 1924 - 1925
DOI: 10.1126/science.272.5270.1924
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Reports
Shape-Controlled Synthesis of Colloidal Platinum Nanoparticles
Temer S. Ahmadi,
Zhong L. Wang,
Travis C. Green,
Arnim Henglein,
Mostafa A. El-Sayed
*
The shapes and sizes of platinum nanoparticles were controlled by
changes in the ratio of the concentration of the capping polymer
material to the concentration of the platinum cations used in the
reductive synthesis of colloidal particles in solution at room
temperature. Tetrahedral, cubic, irregular-prismatic, icosahedral, and
cubo-octahedral particle shapes were observed, whose distribution was
dependent on the concentration ratio of the capping polymer material to
the platinum cation. Controlling the shape of platinum nanoparticles is
potentially important in the field of catalysis.
T. S. Ahmadi, T. C. Green, M. A. El-Sayed, School of Chemistry and
Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA.
Z. L. Wang, School of Material Sciences and Engineering, Georgia
Institute of Technology, Atlanta, GA 30332, USA.
A. Henglein, Hahn-Meitner Institut, Abteilung Kleinteilchenforschung,
14109 Berlin, Germany.
*
To whom correspondence should be addressed.
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