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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 | | gelatin | | nanofabrication | | nanostructured materials | | oxidation | | protective coatings | | pyrolysis | | 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. |
| Rights: | http://creativecommons.org/licenses/by/3.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/51776 |
| 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)
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Submitter: 米澤 徹
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