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流动催化法连续制备碳纳米管及其形态和结构的研究

Morphology and Structure of Carbon Nanotube Synthesized Continuously by Floating Catalysis of Hydrocarbon

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【作者】 郑国斌施益峰冯景伟郭景坤

【Author】 ZHENG Guo-Bin, SHI Yi-Feng, FENG Jing-Wei, GUO Jing-Kun (Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China)

【机构】 中国科学院上海硅酸盐研究所中国科学院上海硅酸盐研究所 上海200050上海200050上海200050

【摘要】 以二茂铁作为催化剂来源、以苯作为碳源、氢气和氩气分别作为载气和稀释气体,在1100℃连续地合成了碳纳米管.碳纳米管的生成分二个过程:催化生长和表面无定形碳的生成.所得到的碳纳米管的内径为3~6nm,而外径约为20~70nm碳纳米管的外径随气体流速的增加而变细,在较细的碳纳米管中观察到了由催化生长而成的具有光滑薄壁的原始碳纳米管.生成的碳纳米管的长度达数十微米、直径较均匀,其端部大多为圆形,但也观察到其他的形状的端部.

【Abstract】 Carbon nanotubes were systhesized at 1100℃by using ferrocene as the source of catalyst, benzene as source of carbon, hydrogen and argon as the carrying and diluting gas, respectively and their structures were analyzed by SEM, TEM and XRD. The inner core of the carbon nanotube was observed in thinner nanotubes. The formation of carbon nanotubes consists of two steps: the catalysis growth of nanotubes and the deposition of amorphous carbon. The carbon nanotubes obtained have a hollow diameter of 3~6nm, and are as long as tens of microns. The outer diameter of the carbon nanotubes is in the range of 20~70nm and uniform along their longitude, and decreases with the increasing of the flow rate of gases. The tips of the as-grown nanotubes are typically round, though other types of tips existing.

【关键词】 碳纳米管流动催化法二茂铁
【Key words】 carbon nanotubefloating catalysisferrocene
  • 【文献出处】 无机材料学报 ,Journal of Inorganic Materials , 编辑部邮箱 ,2001年05期
  • 【分类号】TB383
  • 【被引频次】10
  • 【下载频次】133
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