Formation of monodispersed ultrafine platinum particles and their electrophoretic deposition on electrodes

Authors

  • Dr. Toshiharu Teranishi,

    1. School of Materials Science Japan Advanced Institute of Science and Technology 1-1 Asahidai, Tatsunokuchi, Nomi-gun Ishikawa 923-12 (Japan)
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  • Prof. Mikio Miyake,

    1. School of Materials Science Japan Advanced Institute of Science and Technology 1-1 Asahidai, Tatsunokuchi, Nomi-gun Ishikawa 923-12 (Japan)
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  • Masahiro Hosoe

    1. School of Materials Science Japan Advanced Institute of Science and Technology 1-1 Asahidai, Tatsunokuchi, Nomi-gun Ishikawa 923-12 (Japan)
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  • The present work was partially supported by a Grant-in-Aid for Encouragement of Young Scientists (No. 07750748) and one for Scientific Research in Priority Areas of “New Polymers and Their Nanoorganized Systems” (No. 277/08246224) from the Ministry of Education, Science, Sports and Culture, Japan.

Abstract

Ordered ultrafine platinum particles are expected to have properties differing from those of isolated particles, however, few measurements have been made because of the difficulty of producing monodispersed Pt particles. A method is reported for controlling the size and size distribution of polymer-protected ultrafine Pt particles, which can be ordered densely in two dimensions to give Pt particle monolayers by electrophoretic deposition. The structure of the particles and the importance of the nucleation rate in determining the size and distribution are discussed.

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