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首页> 外文期刊>Chemical Physics Letters >Temperature-dependent growth of carbon nanotubes by pyrolysis of ferrocene and acetylene in the range between 700 and 1000 degrees C
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Temperature-dependent growth of carbon nanotubes by pyrolysis of ferrocene and acetylene in the range between 700 and 1000 degrees C

机译：二茂铁和乙炔在700到1000摄氏度范围内的热解过程中碳纳米管的温度依赖性生长

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摘要

Aligned carbon nanotubes were grown by pyrolysis of ferrocene and acetylene in the temperature range 700-1000degreesC. The average diameter is constantly 20 run for all growth temperatures. As the temperature increases, the growth rate increases by 60 times. The length reaches up to 3 mm at 1000degreesC. These long carbon nanotubes exhibit a cylindrical structure. The relative amount of crystalline graphitic sheets increases significantly with the growth temperature. The Arrhenius plot yields the activation energy 35 +/- 3 kcal/mol, which is close to the diffusion energy of carbon in bulk gamma-Fe. We suggest that the bulk diffusion of carbons would play an important role in the growth of cylindrical structured carbon nanotubes. (C) 2003 Elsevier Science B.V. All rights reserved. [References: 35]
机译：取向碳纳米管通过二茂铁和乙炔的热解在700-1000摄氏度的温度范围内生长。在所有生长温度下，平均直径始终为20游程。随着温度升高，生长速率增加60倍。在1000℃下，长度达到3mm。这些长碳纳米管表现出圆柱形结构。结晶石墨片的相对量随着生长温度而显着增加。 Arrhenius曲线产生的活化能为35 +/- 3 kcal / mol，接近碳在整体γ-Fe中的扩散能。我们建议碳的整体扩散将在圆柱结构的碳纳米管的生长中起重要作用。 （C）2003 Elsevier Science B.V.保留所有权利。 [参考：35]

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