Au@Rh core-shell nanoparticles with dendritic structure

被引：3
|
作者：
Jiao, Jiao [1 ]
Liu, Xiaojun [1 ]
He, Hong [1 ]
机构：
[1] Beijing Univ Technol, Key Lab Beijing Reg Air Pollut Control, Beijing 100024, Peoples R China
来源：
MATERIALS LETTERS | 2014年 / 131卷
基金：
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词：
Nanoparticles; Metals and alloys; Core-shell; Heterogeneous nucleation; SEEDING GROWTH;
D O I：
10.1016/j.matlet.2014.05.216
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Au@Rh core-shell nanoparticles (NPs) with Rh depositing on the spherical Au NPs were synthesized for the first time using successive reduction method. Au NPs were prepared by reducing HAuCl4 with L-ascorbic acid as the reducing agent and cetyltrimethylammonium bromide (CTAB) as the capping agent. Au@Rh NPs were then obtained by reducing RhCl3 in the presence of the pre-synthesized Au NPs. The morphology of the Au@Rh NPs is dendritic. Au@Rh NPs with molar ratios Au:Rh of 5:1, 2:1, 1:1 and 1:2 show that the Rh shell is polycrystalline and the growth of Rh on the Au NPs is heterogeneous nucleation. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：336 / 339
页数：4
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