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Morphological Control of Catalytically Active Platinum Nanocrystals

Authors

  • Hyunjoo Lee,

    1. Department of Chemistry, University of California, Berkeley, Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA, Fax: (+1) 510-642-7301
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  • Susan E. Habas,

    1. Department of Chemistry, University of California, Berkeley, Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA, Fax: (+1) 510-642-7301
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  • Sasha Kweskin,

    1. Department of Chemistry, University of California, Berkeley, Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA, Fax: (+1) 510-642-7301
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  • Derek Butcher,

    1. Department of Chemistry, University of California, Berkeley, Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA, Fax: (+1) 510-642-7301
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  • Gabor A. Somorjai Prof.,

    1. Department of Chemistry, University of California, Berkeley, Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA, Fax: (+1) 510-642-7301
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  • Peidong Yang Prof.

    1. Department of Chemistry, University of California, Berkeley, Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA, Fax: (+1) 510-642-7301
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  • This work was supported by the Director, Office of Science, Office of Basic Energy Sciences, Chemical Sciences, Materials Sciences and Engineering Division of the U.S. Department of Energy under contract No. DE-AC02-05CH11231. We thank the National Center for Electron Microscopy for the use of their facilities.

Abstract

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Activity revived: Platinum nanoparticles (cuboctahedra, cubes, and porous particles, see picture, from left to right) capped with alkylammonium ions are synthesized by manipulating the reduction kinetics. The catalytic activity of these nanoparticles is superior to that of nanoparticles whose shape was controlled with a polymeric capping agent and foreign metal ions.

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