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Analytical TEM Observations of Au-Pd Nano-particles Prepared by Sonochemical Techniques

Published online by Cambridge University Press:  01 February 2011

Tomoki Akita
Affiliation:
t-akita@aist.go.jp, National Institute of Advanced Industrial Science and Technology (AIST), Research Institute for Ubiquitous Energy Devices, Midorigaoka1-8-31, Ikeda, 563-8577, Japan, +81-72-751-9732, +81-72-751-9714
Taiei Hiroki
Affiliation:
am0804@mtr.osakafu-u.ac.jp, Osaka Pref. Univ., Department of Materials Science, Gakuen-cho 1-2,Naka-ku, Sakai, Osaka 599-8531, Japan
Shingo Tanaka
Affiliation:
swing@ni.aist.go.jp, National Institute of Advanced Industrial Science and Technology (AIST), Research Institute for Ubiquitous Energy Devices, Midorigaoka1-8-31, Ikeda, Osaka 563-8577, Japan
Takao Kojima
Affiliation:
kojima@riast.osakafu-u.ac.jp, Osaka Pref. Univ., Radiation Research Center, Gakuen-cho 1-2, Naka-ku, Sakai, Osaka 599-8570, Japan
Masanori Kohyama
Affiliation:
m-kohyama@aist.go.jp, National Institute of Advanced Industrial Science and Technology (AIST), Research Institute for Ubiquitous Energy Devices, Midorigaoka1-8-31, Ikeda, Osaka 563-8577, Japan
Akihiro Iwase
Affiliation:
iwase@riast.osakafu-u.ac.jp, Osaka Pref. Univ., Department of Materials Science, Gakuen-cho 1-2,Naka-ku, Sakai, Osaka 599-8531, Japan
Fuminobu Hori
Affiliation:
horif@mtr.osakafu-u.ac.jp, Osaka Pref. Univ., Department of Materials Science, Gakuen-cho 1-2,Naka-ku, Sakai, Osaka 599-8531, Japan
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Abstract

The structure of Au-Pd bimetallic nanoparticles prepared by sonochemical technique was investigated by an analytical transmission electron microscopy. The core (Au)-shell (Pd) structure was clearly confirmed by the intensity profile of annular dark field scanning transmission electron microscopy (ADF-STEM). The line-scan analysis of energy dispersive X-ray spectroscopy (EDS) in STEM mode also revealed the Au core-Pd shell structure. The selected area electron diffraction pattern from the Au-Pd nanoparticles indicated the possibility that the crystal lattice of Pd shell is expanded and coincident with the crystal lattice of Au core.

Type
Research Article
Copyright
Copyright © Materials Research Society 2007

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References

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