Synthesis of cubic Pd-Ag random alloy nanocrystal in an aqueous solution in the presence of CTAB

被引：3
|
作者：
Tsuji, Masaharu [1 ,2 ,3 ]
Takemura, Koichi [2 ]
Shiraishi, Chihiro [2 ]
Uto, Keiko [1 ]
Yoshida, Yuki [3 ]
Daio, Takeshi [4 ]
机构：
[1] Kyushu Univ, Inst Mat Chem & Engn, Kasuga, Fukuoka 8168580, Japan
[2] Kyushu Univ, Grad Sch Engn Sci, Kasuga, Fukuoka 8168580, Japan
[3] Kyushu Univ, Grad Sch Integrated Frontier Sci, Kasuga, Fukuoka 8168580, Japan
[4] Kyushu Univ, Res Lab High Voltage Electron Microscopy, Nishi Ku, Fukuoka 8190395, Japan
来源：
MATERIALS LETTERS | 2013年 / 95卷
关键词：
Pd-Ag bimetallic nanoparticles; Cubic nanocrystal; Random alloy; Crystal structure; NANOPARTICLES;
D O I：
10.1016/j.matlet.2012.12.093
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
When a mixture of H2PdCl4 and AgNO3 was co-reduced by ascorbic acid in aqueous solution in the presence of CTAB as a surfactant, aside from irregular shapes of Pd-Ag alloy particles, new cubic Pd-Ag alloy nanocrystals were prepared. The transmission electron microscopic (TEM)-energy dispersed X-ray spectroscopic (EDS) data at the atomic level suggest that Pd-Ag cubic alloys surrounded by (100) facets consist of substitutional solid solution and the arrangement of the solute Ag atoms is random. The Ag atomic content in Pd-Ag alloy must be less than approximate to 22% for preservation of the cubic structure. Optical properties of Pd-Ag alloys were characterized by observing the extinction spectra in the ultraviolet(UV)-visible(vis) range. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：201 / 204
页数：4
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