Laser synthesis of Au/Ag colloidal nano-alloys: Optical properties, structure and composition

被引：69

作者：

Compagnini, Giuseppe ^{[1
]}

Messina, Elena ^{[1
]}

Puglisi, Orazio ^{[1
]}

Nicolosi, Valeria ^{[2
]}

机构：

[1] Univ Catania, Dipartimento Sci Chim, Lab Film Sottili & Nanostructture, I-95125 Catania, Italy

[2] Univ Dublin, Dept Phys, Dublin 2, Ireland

来源：

APPLIED SURFACE SCIENCE | 2007年 / 254卷 / 04期

关键词：

laser ablation; optical properties; colloids; nano-alloys; plasmon resonance;

D O I：

10.1016/j.apsusc.2007.07.177

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：

We have successfully synthesized Au/Ag colloidal nano-alloys with a wide range of compositions by laser ablation of single metal targets in water and a re-irradiation of mixed colloidal suspensions. The optical extinction spectra have been obtained in the plasmon resonance region and their analysis by using the Mie-Gans approach has lead to a quantitative estimation of a number of different structural features for the sols. Some of the obtained results are supported by X-ray photoelectron data and transmission electron microscopy, while others are used to investigate the kinetics of formation of the nano-alloys under laser irradiation. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：1007 / 1011

页数：5

共 25 条

[1] Laser ablation synthesis of gold nanoparticles in organic solvents [J].