Preparation and characterization of aqueous colloids of Pt-Ru nanoparticles

Yuzuru Shimazaki, Yoshio Kobayashi, Shinji Yamada, Takao Miwa, Mikio Konno

研究成果: Article査読

49 被引用数 (Scopus)

抄録

A synthetic method for platinum-ruthenium (PtRu) nanoparticles in aqueous media is proposed. This method employs citric acid as a capping agent and NaBH4 as a reducing agent with the aid of pH control. The number-averaged size of the PtRu nanoparticles was ca. 2 nm. The crystal phase and chemical composition of the nanoparticles was investigated by X-ray diffraction measurement and scanning transmission electron microscopy coupled with energy-dispersive X-ray spectroscopy analysis, which indicated that the nanoparticles mainly consisted of an alloy of Pt and Ru. Electrochemical measurement showed that the PtRu nanoparticles had catalytic activity for methanol oxidation.

本文言語English
ページ(範囲)122-126
ページ数5
ジャーナルJournal of Colloid And Interface Science
292
1
DOI
出版ステータスPublished - 2005 12月 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 生体材料
  • 表面、皮膜および薄膜
  • コロイド化学および表面化学

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