JP4833546B2 - 半導体性カーボンナノチューブの選別方法 - Google Patents
半導体性カーボンナノチューブの選別方法 Download PDFInfo
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- Y10S977/742—Carbon nanotubes, CNTs
- Y10S977/745—Carbon nanotubes, CNTs having a modified surface
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10S977/00—Nanotechnology
- Y10S977/70—Nanostructure
- Y10S977/734—Fullerenes, i.e. graphene-based structures, such as nanohorns, nanococoons, nanoscrolls or fullerene-like structures, e.g. WS2 or MoS2 chalcogenide nanotubes, planar C3N4, etc.
- Y10S977/742—Carbon nanotubes, CNTs
- Y10S977/745—Carbon nanotubes, CNTs having a modified surface
- Y10S977/748—Modified with atoms or molecules bonded to the surface
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10S977/00—Nanotechnology
- Y10S977/70—Nanostructure
- Y10S977/734—Fullerenes, i.e. graphene-based structures, such as nanohorns, nanococoons, nanoscrolls or fullerene-like structures, e.g. WS2 or MoS2 chalcogenide nanotubes, planar C3N4, etc.
- Y10S977/742—Carbon nanotubes, CNTs
- Y10S977/75—Single-walled
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description
図1は、本発明の実施例による半導体性カーボンナノチューブの選別方法を説明するための概略的なフローチャートである。
以下、本発明の望ましい実施例を挙げて本発明をさらに詳細に説明するが、本発明がこれに制限されるものではない。
精製したカーボンナノチューブを硝酸と硫酸との体積混合比が1:9である混酸溶液と混合してカーボンナノチューブの分散液を得た。この分散液を、攪拌器を使用して3時間攪拌した。次いで、前記カーボンナノチューブ分散液を、純水とを混合して前記分散液を希釈しながらマイクロフィルタを用いてろ過した。最後に、前記ろ過した半導体性カーボンナノチューブを真空炉に入れて700℃で1時間加熱して半導体性カーボンナノチューブを得た。
前記混酸中の硝酸と硫酸との比率を2:8とし、攪拌時間を2時間としたこと以外、前記実施例1と同じ方法で半導体性カーボンナノチューブを得た。
前記実施例1及び2により得られた半導体性カーボンナノチューブに対してラマン散乱実験及び吸収実験を通じてカーボンナノチューブの直径分布とキラル特性分布とを測定し、その結果を図2及び3に示した。図2によれば、未処理群で発見されていた金属カーボンナノチューブのピークが実施例1及び2ではなくなったことが確認でき、図3によれば、1300cm-1付近の欠損トピーク(D−band)が実施例1及び2ではなくなったことが確認できる。すなわち、本発明によれば、半導体性カーボンナノチューブを大量に良い分離効率で分離でき、欠陥のあるカーボンナノチューブも除去できることが分かる。
Claims (8)
- カーボンナノチューブと硫酸及び硝酸を混合した混酸溶液を混合する段階と、
前記カーボンナノチューブ分散溶液を攪拌する段階と、
前記カーボンナノチューブ分散溶液をろ過する段階と、
ろ過されたカーボンナノチューブを加熱して官能基を除去する段階と、を含み、
前記混酸溶液の体積比は、1:9〜2:8(硝酸:硫酸)であることを特徴とする半導体性カーボンナノチューブの選別方法。 - 前記攪拌時間は、1ないし3時間であることを特徴とする請求項1に記載の半導体性カーボンナノチューブの選別方法。
- 前記ろ過段階は数ミクロンの微細孔隙を有するフィルタを用いることを特徴とする請求項1又は請求項2に記載の半導体性カーボンナノチューブの選別方法。
- 前記官能基を除去する段階における加熱温度は、600〜1000℃であることを特徴とする請求項1ないし請求項3のいずれか1項に記載の半導体性カーボンナノチューブの選別方法。
- 前記加熱段階を、真空雰囲気下あるいはアルゴン雰囲気下で行うことを特徴とする請求項1ないし請求項4のいずれか1項に記載の半導体性カーボンナノチューブの選別方法。
- 前記攪拌段階の後にメッシュを使用して不純物をろ過する段階をさらに含むことを特徴とする請求項1ないし請求項5のいずれか1項に記載の半導体性カーボンナノチューブの選別方法。
- 前記カーボンナノチューブを混酸溶液と混合する段階の前にカーボンナノチューブ粗生成物を精製する段階をさらに含むことを特徴とする請求項1ないし請求項6のいずれか1項に記載の半導体性カーボンナノチューブの選別方法。
- 前記カーボンナノチューブ粗生成物を精製する段階を、気相熱処理精製または酸処理精製方法により行うことを特徴とする請求項7に記載の半導体性カーボンナノチューブの選別方法。
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KR1020040000052A KR100580641B1 (ko) | 2004-01-02 | 2004-01-02 | 반도체성 탄소나노튜브의 선별방법 |
KR2004-000052 | 2004-01-02 |
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JP2005194180A JP2005194180A (ja) | 2005-07-21 |
JP4833546B2 true JP4833546B2 (ja) | 2011-12-07 |
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US (1) | US7387735B2 (ja) |
EP (1) | EP1550635B1 (ja) |
JP (1) | JP4833546B2 (ja) |
KR (1) | KR100580641B1 (ja) |
CN (1) | CN100560481C (ja) |
DE (1) | DE602004009751T2 (ja) |
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KR100869152B1 (ko) * | 2007-04-27 | 2008-11-19 | 한국화학연구원 | 탄소 나노튜브 반도체 소자 제조 방법 및 그에 의한 탄소나노튜브 반도체 소자 |
JP5177623B2 (ja) * | 2007-05-21 | 2013-04-03 | 独立行政法人産業技術総合研究所 | カーボンナノチューブの分離法 |
JP5177624B2 (ja) * | 2007-05-21 | 2013-04-03 | 独立行政法人産業技術総合研究所 | カーボンナノチューブの高効率分離法 |
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DE602004009751T2 (de) | 2008-08-28 |
US7387735B2 (en) | 2008-06-17 |
JP2005194180A (ja) | 2005-07-21 |
EP1550635A1 (en) | 2005-07-06 |
US20050214198A1 (en) | 2005-09-29 |
KR100580641B1 (ko) | 2006-05-16 |
DE602004009751D1 (de) | 2007-12-13 |
CN100560481C (zh) | 2009-11-18 |
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EP1550635B1 (en) | 2007-10-31 |
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