Synthesis of Au/Ag nanoframes from Ag nanoplates by galvanic replacement reaction and its optical properties

被引：8

作者：

Sung, Hwa Kyung ^{[1
]}

Kim, Younghun ^{[1
]}

机构：

[1] Kwangwoon Univ, Dept Chem Engn, Seoul 139701, South Korea

来源：

MATERIALS LETTERS | 2015年 / 145卷

基金：

新加坡国家研究基金会;

关键词：

Galvanic replacement reaction; Bimetallic nanoparticles; Au/Ag nanoframe; Surface plasmon resonance; SILVER;

D O I：

10.1016/j.matlet.2015.01.081

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Metallic hollow nanostructures, prepared using a galvanic replacement reaction (GRR), give rise to hotspots in electromagnetic fields, due to plasmon coupling between their interior and exterior surface fields. Herein, Au/Ag triangular nanoframes (Au/AgNF) were prepared by a galvanic replacement reaction (GRR) of Ag nanoplates with HAuCl4 in an aqueous solution for 5 mm. Through sequential processes of pre-oxidation and GRR, Au/AgNF with 65/35 ratio of Au/Ag was obtained. An optical change in the UV-vis spectra was confirmed with discrete dipole approximation simulations. The dipole peak of Au/AgNF further red-shifted than the quadrupole peak, found at near-infrared region. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：154 / 157

页数：4

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