Unique microstructure of mesoporous Pt (Hi-Pt) prepared via direct physical casting in lyotropic liquid crystalline media

Yusuke Yamauchi, Toshiyuki Momma, Minekazu Fuziwara, Sivakumar Sadasivan Nair, Tetsu Ohsuna, Osamu Terasaki, Tetsuya Osaka, Kazuyuki Kuroda*

*この研究の対応する著者

研究成果: Article査読

62 被引用数 (Scopus)

抄録

Two-dimensional hexagonally ordered mesoporous Pt particles are prepared by Pt deposition in the aqueous domains of lyotropic liquid crystals (LLC) by chemical reduction with Zn powders. Interestingly, the framework is composed of connected nanoparticles of about 3 nm in size. Moreover, it is proved that the lattice fringes on the atomic crystallinity are coherently extended across the several nanoparticles in the framework. Such a framework composed of connected nanoparticles with extended crystallinity is uniquely created by using LLC as a soft template, which is not attainable by a traditional approach using mesoporous silica as a hard template. Through the structural identification, the formation mechanism of mesoporous Pt in the presence of LLC is thought to be continuous deposition of Pt nanoparticles from one nanoparticle.

本文言語English
ページ(範囲)6342-6348
ページ数7
ジャーナルChemistry of Materials
17
25
DOI
出版ステータスPublished - 2005 12 13

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)
  • 材料化学

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