単面カーボンナノチューブ薄膜の直接合成
Yongping Liao1, Hua Jiang1, Nan Wei1
1Department of Applied Physics , Aalto University School of Science , P.O. Box 15100, FI-00076 Aalto , Finland.
Journal of the American Chemical Society
|July 28, 2018
まとめ
研究者らは,浮遊触媒化学蒸気堆積 (FC-CVD) の間にCO2を加えることで,調節可能な色とキラリティを持つ単壁カーボンナノチューブ (SWCNT) を合成した. この方法は,電子アプリケーション用のSWCNTを生産するための新しい経路を提供します.
科学分野:
- 材料科学
- ナノテクノロジー
- 化学工学
背景:
- 浮動触媒化学蒸気堆積 (FC-CVD) による単壁炭素ナノチューブ (SWCNT) の制御されたキラリティ分布を達成することは,依然として重要な課題です.
- SWCNTの特性を調節することは,高度な電子機器の適用に不可欠です.
研究 の 目的:
- 調節可能なキラリティ分布と色を持つSWCNTフィルムを合成する方法を開発する.
- FC-CVDにおけるSWCNT合成に対するCO2添加の影響を調査する.
主な方法:
- 炭素源として一酸化炭素 (CO) を使った浮動触媒化学蒸気堆積 (FC-CVD) を利用する.
- 異なる量の二酸化炭素 (CO2) をFC-CVD原子炉に導入する.
- 原子炉の温度を最適化して SWCNT 直径とキラリティを制御する.
主要な成果:
- 調節可能なキラリティ分布と明確な色 (緑色と茶色) を有するSWCNTフィルムの直接合成.
- SWCNTの直径が1. 2から1. 5 nm (> 98%) までの狭いキラリティ分布を集約した.
- CO2はCO不均衡とSWCNT核化に影響し,直径に影響する.
結論:
- CO2の添加は,制御されたキラリティと直径を持つSWCNTを直接合成するための新しい経路を提供します.
- この方法は,タッチセンサやトランジスタなどの電子機器における潜在的なアプリケーションのための特定の性質を持つSWCNTの生産を容易にする.
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