Preparation and characterization of aqueous colloids of Pt-Ru nanoparticles

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

doi:10.1016/j.jcis.2005.05.052

Preparation and characterization of aqueous colloids of Pt-Ru nanoparticles

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

工学研究科・化学工学専攻

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
巻	292
号	1
DOI	https://doi.org/10.1016/j.jcis.2005.05.052
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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10.1016/j.jcis.2005.05.052

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title = "Preparation and characterization of aqueous colloids of Pt-Ru nanoparticles",

abstract = "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.",

keywords = "Alloy, Colloid, Direct methanol fuel cell, Nanoparticle, STEM-EDX, XRD",

author = "Yuzuru Shimazaki and Yoshio Kobayashi and Shinji Yamada and Takao Miwa and Mikio Konno",

note = "Funding Information: This work was supported by the Grant-in-Aid for R&D for Practical Application Utilizing the Matching Fund Method, from New Energy and Industrial Technology Development Organization.",

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AU - Shimazaki, Yuzuru

AU - Kobayashi, Yoshio

AU - Yamada, Shinji

AU - Miwa, Takao

AU - Konno, Mikio

N1 - Funding Information: This work was supported by the Grant-in-Aid for R&D for Practical Application Utilizing the Matching Fund Method, from New Energy and Industrial Technology Development Organization.

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AB - 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.

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KW - Direct methanol fuel cell

KW - Nanoparticle

KW - STEM-EDX

KW - XRD

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Preparation and characterization of aqueous colloids of Pt-Ru nanoparticles

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