The Purity and Thermal Stability in Air of Metal-Encapsulating Carbon Nanocapsules (MECNCs) |
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| Authors: | Motohiro Uo Hanako Kachi Tsukasa Akasaka Fumio Watari Yoshinori Sato Kenichi Motomiya Kazuyuki Tohji |
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| Affiliation: | a Department of Biomedical Materials and Engineering, Graduate School of Dentistry, Hokkaido University, Sapporo, Japanb Graduate School of Environmental Studies, Tohoku University, Sendai, Japan |
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| Abstract: | Rare earth elements (Y, La, Ce, Nd, Gd and Dy) encapsulated by carbon nanocapsules (CNCs) were synthesized and their purity and air oxidation stability were estimated. The purity was estimated as the rare earth carbide content. Gd- and Dy-encapsulating CNCs had higher than 30 wt% and others 15 to 20 wt%. Encapsulated rare earth carbide was oxidized by heating in air at 400°C or higher. This suggested oxidation damage to the graphene capsules of CNCs. |
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| Keywords: | Metal encapsulating carbon nanocapsules rare earth carbide purity thermal stability |
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