Structural Analysis of C_<60> Nanotubes Heat-Treated in Vacuum
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概要
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The structural change of C60 nanotubes (C60NTs) by heating in vacuum was investigated using thermo-gravimetric analysis (TGA), transmission electron microscopy (TEM) and Raman spectroscopy. The C60NTs were prepared by use of a pyridine solution saturated with C60 and isopropyl alcohol (IPA). A weight loss of about 4 % in the C60NTs dried at room temperature was observed by heating up to 400°C in a N2 atmosphere, and the C60NTs started to decompose from about 600°C. The Ag(2) peak of as-prepared C60NTs shows a Raman shift indicating one-dimensionally polymerized C60, while the C60NTs heated at 100°C ∼ 500°C in vacuum show Ag(2) peaks characteristic of van der Waals C60 crystals, suggesting a change of bonding state of C60 molecules by heat treatment. TEM observations show that the crystallinity and surface morphology of C60NTs are degraded by high-temperature heat treatment in vacuum.
- 2008-08-01
著者
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RINGOR Cherry
Fullerene Engineering Group, Advanced Nano Materials Laboratory, National Institute for Materials Sc
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NAKAMURA Kohei
International Graduate School of Arts and Sciences, Yokohama City University
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TACHIBANA Masaru
International Graduate School of Arts and Sciences, Yokohama City University
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SAITO Kazuma
Institute of Materials Science, University of Tsukuba
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KIZUKA Tokushi
Institute of Materials Science, University of Tsukuba
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Saito Kazuma
Institute Of Materials Science University Of Tsukuba
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Ringor Cherry
Fullerene Engineering Group Advanced Nano Materials Laboratory National Institute For Materials Scie
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Nakamura Kohei
International Graduate School Of Arts And Sciences Yokohama City University
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Kizuka Tokushi
Institute Of Materials Science Graduate School Of Pure And Applied Sciences University Of Tsukuba
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Kizuka Tokushi
Institute Of Materials Science University Of Tsukuba
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Tachibana Masaru
International Graduate School Of Arts And Sciences Yokohama City University
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Kizuka Tokushi
Institute Of Industrial Science The University Of Tokyo
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Miyazawa Kun'ichi
National Institute For Materials Science
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Miyazawa Kun'ichi
Fullerene Engineering Group Advanced Nano Materials Laboratory National Institute For Materials Scie
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