Synthesis of silica-coated rhodium nanoparticles in reversed micellar solution

T. Tago, Y. Shibata, T. Hatsuta, K. Miyajima, M. Kishida, S. Tashiro, K. Wakabayashi

研究成果: ジャーナルへの寄稿学術誌査読

36 被引用数 (Scopus)

抄録

Silica (SiO2)-coated rhodium (Rh) nanoparticles were prepared using a water-in-oil microemulsion of polyoxyethylene (15) cetyl ether, cyclohexane and water. SiO2-coated Rh nanoparticles were obtained by hydrolyzing metal alkoxide (tetraethylorthosilicate, TEOS) in the solution containing Rh complex nanoparticles followed by thermal and reduction treatments. In the SiO2-coated Rh nanoparticle, a Rh particle with an average diameter of 4.1 nm was located nearly at the center of each spherical SiO2 particle. The SiO2 layer was approximately 15 nm thick. Since the Rh particle was wholly surrounded by SiO2, the Rh particle of the SiO2-coated Rh nanoparticle exhibited an extremely high thermal stability. Furthermore, the porous structure of the SiO2 layer could be controlled by the hydrolysis conditions of TEOS.

本文言語英語
ページ(範囲)977-982
ページ数6
ジャーナルJournal of Materials Science
37
5
DOI
出版ステータス出版済み - 3月 1 2002

!!!All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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