Synthesis of Pt-Ru nanoparticles with a bifunctional stabilizer

被引：11

作者：

Nagao, D

Shimazaki, Y

Kobayashi, Y

Konno, M ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Dept Chem Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

[2] Tohoku Technoarch, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2006年 / 273卷 / 1-3期

关键词：

nanoparticle; bimetallic; bifunctional stabilizer; Pt-Ru; size distribution;

D O I：

10.1016/j.colsurfa.2005.08.011

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A synthetic method for bimetallic Pt-Ru nanoparticles with a bifunctional stabilizer, (3-aminopropyl)trimethoxysilane (APS), is proposed. Sodium borohydride was used to induce simultaneous reduction of platinum and ruthenium ions in the presence of APS. The concentration of each metal ion was 0.06 mM, and sodium borohydride concentration was 10 times higher than the total metal ion concentration. X-ray diffraction measurement showed that the nanoparticles formed by the reduction contained alloy of Pt and Ru. Comparison of the Pt-Ru nanoparticles prepared in the presence of APS with those in the absence of APS confirmed that APS played a role of stabilizer in synthesis of the nanoparticles. The number-averaged size of Pt-Ru nanoparticles could be varied in the range of 2.1-3.7nm at APS concentrations of 0.13-0.26mm, and the narrowest size distribution of Pt-Ru nanoparticles appeared with the minimum average size (2.1 nm) around an APS concentration of 0.1 mM. (c) 2005 Elsevier B.V. All rights reserved.

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页码：97 / 100

页数：4

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