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High temperature oxidation event of gelatin nanoskin-coated copper fine particles observed by in situ TEM

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Title: High temperature oxidation event of gelatin nanoskin-coated copper fine particles observed by in situ TEM
Authors: Narushima, Takashi Browse this author
Tsukamoto, Hiroki Browse this author
Yonezawa, Tetsu Browse this author →KAKEN DB
Keywords: copper
differential thermal analysis
nanostructured materials
protective coatings
reduction (chemical)
transmission electron microscopy
Issue Date: Dec-2012
Publisher: American Institute of Physics
Journal Title: AIP Advances
Volume: 2
Issue: 4
Start Page: 042113
Publisher DOI: 10.1063/1.4759498
Abstract: Metallic copper fine particles were prepared using CuO slurry by hydrazine reduction in the presence of gelatin. To observe a behavior of these particles at high temperature, in situ heating TEM observations were carried out. Oxygen gas was introduced and the pressure of the TEM column was kept at 10^[-3] Pa, corresponding the pressure around the sample at 10^[-1] Pa. The gelatin, which acts as a protective nanoskin on the particle surface was gradually decomposed. Around approximately 140℃, it was observed that Cu2O dots formed on the surface of the copper particle. This result is well consistent with the behavior of the TG-DTA curve of the copper fine particles under ambient conditions, and provides key information of oxidative behavior of copper fine particles.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 米澤 徹

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