Analytical TEM observation of Au-Pd nanoparticles prepared by sonochemical method
Analytical TEM observation of Au-Pd nanoparticles prepared by sonochemical method
复制标题
DOI：
10.1016/j.cattod.2007.10.033
复制
发表时间：
2008-02-29
期刊：
影响因子：
5.3
通讯作者：
Hori, F.
中科院分区：
文献类型：
--
作者：
Akita, T.;Hiroki, T.;Hori, F.
采用分析透射电镜对声化学法制备的金钯纳米粒子进行了研究。核（Au）-壳（Pd）结构，没有明显的混合层，并具有类似的厚度的Pd壳的环形暗场扫描透射电子显微镜（ADF-STEM）的图像和强度分布，并通过线扫描分析的能量色散X射线光谱（EDS）在STEM模式下清楚地证实。ADF-STEM图像、电子衍射图案和HRTEM图像的FFT图案的互补性的详细分析表明，Pd壳外延生长在与An具有相同晶格常数的An核上，并且具有相干的Pd/Au界面结构。(c)2007 Elsevier B. V.保留所有权利。
The Au-Pd nanoparticles prepared by sonochemical technique were investigated by the analytical transmission electron microscopy. The core (Au)-shell (Pd) structure without apparent mixing layers and with similar thickness of Pd shells was clearly confirmed by the image and intensity profile of annular dark field scanning transmission electron microscopy (ADF-STEM) and also by the line-scan analysis of energy dispersive X-ray spectroscopy (EDS) in STEM mode. Detailed analyses of the ADF-STEM imaging, the electron diffraction pattern and the FFT pattern of HRTEM images complementarity show that the Pd shell epitaxially grows on the An core expanded with the same lattice constant as An and with the coherent Pd/Au interface structure. (c) 2007 Elsevier B.V. All rights reserved.