Etching Effects of Ultraviolet Irradiation on Multiwalled Carbon Nanotubes
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- IMAI Motoyuki
- Graduate School of Engineering, Tokyo University of Science
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- NISHIKAWA Eiichi
- Graduate School of Engineering, Tokyo University of Science
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The relationship between the activation energy, crystallinity, and morphology of UV-irradiated multi-walled carbon nanotubes (MWCNTs) was systematically investigated. Using total UV energy as an index, MWCNTs were irradiated with ultraviolet light at 254 nm and 185 nm. The activation energy of the MWCNTs was 320 kJ/mol prior to irradiation and 154 kJ/mol after irradiation with 16174 J/cm2 of total UV energy. In addition, the value of the IG/ID ratio for the MWCNTs was 7.12 prior to irradiation and 3.63 after irradiation with 16174 J/cm2 of total UV energy. Transmission electron microscopy (TEM) observations showed that the outer layers of the MWCNTs were increasingly etched away and the linearity of the graphite layer was lost as the total UV energy increased. In addition, when the total UV energy exceeded 10856 J/cm2, the hollow structure of the MWCNTs was completely lost. It was therefore found that, as the energy of the incident ultraviolet light increases, the activation energy of MWCNTs decreases, the crystallinity deteriorates, and the morphology changes. Furthermore, it was demonstrated that the level of total UV energy exposure can be used as an indicator of the morphology, activation energy, and crystallinity of UV-irradiated MWCNTs.
収録刊行物
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- 表面技術
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表面技術 65 (7), 325-329, 2014
一般社団法人 表面技術協会
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詳細情報 詳細情報について
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- CRID
- 1390001204117950848
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- NII論文ID
- 130005085939
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- NII書誌ID
- AN1005202X
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- ISSN
- 18843409
- 09151869
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- NDL書誌ID
- 025613645
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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