Seed-mediated synthesis of Pd-Rh bimetallic nanodendrites

被引：27

作者：

Kobayashi, Hirokazu ^{[1
]}

Lim, Byungkwon ^{[1
]}

Wang, Jinguo ^{[2
]}

Camargo, Pedro H. C. ^{[1
]}

Yu, Taekyung ^{[1
]}

Kim, Moon J. ^{[2
]}

Xia, Younan ^{[1
]}

机构：

[1] Washington Univ, Dept Biomed Engn, St Louis, MO 63130 USA

[2] Univ Texas Dallas, Dept Mat Sci, Richardson, TX 75083 USA

来源：

CHEMICAL PHYSICS LETTERS | 2010年 / 494卷 / 4-6期

基金：

新加坡国家研究基金会;

关键词：

OXYGEN REDUCTION; NANOCRYSTALS; GROWTH;

D O I：

10.1016/j.cplett.2010.06.009

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：

This Letter describes a simple, aqueous-phase route to the synthesis of Pd-Rh bimetallic nanodendrites consisting of Rh branches anchored to a Pd nanocrystal core. Palladium nanocrystals with various shapes, including truncated octahedron, cube, octahedron, and thin plate, have all been successfully employed as seeds to grow Rh branches via the reduction of Na(3)RhCl(6) with L-ascorbic acid in an aqueous solution. The degree of Rh branching could be controlled by varying the concentration of Na(3)RhCl(6) involved in a synthesis. Electron microscopy analysis revealed that growth of Rh branches proceeded via attachment of small Rh particles that had been formed via homogeneous nucleation in solution. (C) 2010 Elsevier B. V. All rights reserved.

引用

页码：249 / 254

页数：6

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