Synthesis of Au, Ag and Au-Ag alloy nanoparticles in aqueous polymer solution

被引：124
|
作者：
Pal, Angshuman [1 ]
Shah, Sunil [1 ]
Devi, Surekha [1 ]
机构：
[1] Maharaja Sayajirao Univ Baroda, Fac Sci, Dept Chem, Baroda 390002, Gujarat, India
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2007年 / 302卷 / 1-3期
关键词：
nanoparticles; polyacrylamide; surface plasmon; alloy;
D O I：
10.1016/j.colsurfa.2007.01.054
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：
Gold, silver and gold-silver alloy nanoparticles were prepared under mild conditions using microwave heating, polyacrylamide as a stabilizing agent and hydrazine hydrate as a reducing agent. The UV-vis spectroscopy revealed the formation of silver and gold nanoparticles by exhibiting surface plasmon absorption maxima at 4 10 and 548 nm, respectively. For Au-Ag bimetallic particles the surface plasmon absorption maxima appeared in between the peaks corresponding to pure silver and pure gold. The surface plasmon absorption maxima for bimetallic nanoparticles changes linearly with increasing gold content in the alloy. Transmission electron micrograph (TEM) showed presence of spherical particles in the range of 5-50 nm size. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：51 / 57
页数：7
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