| 不同压力下碳纳米管的电弧法合成及其表征 |
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| 引用本文： | 郑明东,何孝军,伊廷锋,任世彪. 不同压力下碳纳米管的电弧法合成及其表征[J]. 功能材料与器件学报, 2009, 15(2) |
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| 作者姓名： | 郑明东 何孝军 伊廷锋 任世彪 |
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| 作者单位： | 安徽工业大学化学与化工学院,马鞍山,243002;安徽工业大学化学与化工学院,马鞍山,243002;安徽工业大学化学与化工学院,马鞍山,243002;安徽工业大学化学与化工学院,马鞍山,243002 |
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| 基金项目： | 安徽省重点项目，安徽省科技创新团队资助项目 |
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| 摘 要： | 采用电弧放电法在氦气/乙炔混合气氛中,在不同压力下合成了碳纳米管.运用场发射扫描电镜、场发射透射电镜、X-射线衍射仪和拉曼光谱对碳纳米管的形貌进行了表征.采用可见发射光谱对碳纳米管的形成过程进行了原位诊断研究.场发射扫描电镜结果表明,在氦气/乙炔气氛中合成的碳纳米管的长度大于50微米,许多碳颗粒沉积在碳纳米管壁上.场发射透射电镜结果表明,在0.100MPa下合成的碳纳米管的壁厚明显大于0.035MPa下合成的碳纳米管的壁厚.可见发射光谱诊断结果表明,CH和C2物种可能作为碳纳米管形成的前驱体,其中,以H原子作为无定形炭的刻蚀物种.阳极消耗速率和产物在阴极的沉积速率随着反应器中压力的增加而增加.因此,可以通过加强阳极和乙炔的蒸发速率及CH和C2物种的沉积速率而增加碳纳米管的形成速率.
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| 关 键 词： | 碳纳米管 电弧放电 透射电镜 |
Synthesis of carbon nanotubes at different pressure by arc discharge and its characterization |
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| ZHENG Ming-dang,HE Xiao-jun,YI Ting-feng,REN Shi-biao. Synthesis of carbon nanotubes at different pressure by arc discharge and its characterization[J]. Journal of Functional Materials and Devices, 2009, 15(2) |
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| Authors: | ZHENG Ming-dang HE Xiao-jun YI Ting-feng REN Shi-biao |
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| Affiliation: | School of Chemistry and Chemical Engineering;Anhui University of Technology;Maanshan 243002;China |
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| Abstract: | Carbon nanotubes(CNTs)were synthesized at different pressure in He/C 2H 2 gas mixture by arc discharge.The morphologies of CNTs were characterized by field emission scanning electron microscope(FE-SEM),field emission scanning and transmission electron microscope(STEM),X-ray diffraction(XRD)and Raman spectroscopy.Optical emission spectroscopy(OES)was used in situ to investigate the formation process of CNTs.FE-SEM observation reveals that the length of CNTs synthesized in He/C 2H 2 gas mixture is more than 5... |
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| Keywords: | Carbon nanotube arc discharge transmission electron microscopyCLC: TB383Document code: A |
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