An investigation of the surface-enhanced Raman scattering (SERS) effect from laser irradiation of Ag nanoparticles prepared by trisodium citrate reduction method

被引:22
作者
Ding, Li-Ping [1 ]
Fang, Yan [1 ]
机构
[1] Capital Normal Univ, Dept Phys, Beijing Key Lab Nanophoton & Nanostruct, Beijing 100037, Peoples R China
关键词
SERS; laser irradiated; Ag nanoparticles;
D O I
10.1016/j.apsusc.2006.09.069
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
By irradiating a Ag colloid solution, produced by trisodium citrate reduction method, employing the active Quanta Ray Nd:YAG laser system, lambda = 1064 nm, we prepared relatively small, spherical Ag nanoparticles with a narrow size distribution. The irradiated particles not only improve the configuration, but also the spectroscopy properties to some extent. The influence of the laser fluence on the irradiated energy was studied, via transmission electron micrograph (TEM) images, surface plasmon absorption (SPA) spectra, and surface-enhanced Raman scattering (SERS) spectra. Those benefit to understanding the spectroscopy properties of irradiated particles to obtain precise understanding of the mechanism. And probably the reasonable explanations are given. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:4450 / 4455
页数:6
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