化学学报 ›› 2004, Vol. 62 ›› Issue (22): 2253-2258. 上一篇    下一篇

研究论文

载气对注入CVD法制备碳纳米管和碳纳米纤维的影响

张兵, 郭燕川, 陈丽娟, 彭必先   

  1. 中国科学院理化技术研究所, 北京, 100101
  • 收稿日期:2004-03-01 修回日期:2004-07-12 出版日期:2004-11-28 发布日期:2014-02-17
  • 通讯作者: 彭必先,E-mail:pengbx@ipc.ac.cn E-mail:pengbx@ipc.ac.cn

Effect of Carrying Gas on Preparation of Carbon Nanotubes and Nanofibers by an Injection Chemical Vapor Deposition Method

ZHANG Bing, GUO Yan-Chuan, CHEN Li-Juan, PENG Bi-Xian   

  1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101
  • Received:2004-03-01 Revised:2004-07-12 Online:2004-11-28 Published:2014-02-17

采用注入化学蒸气沉积法,在石英管壁上制备得到了定向的多壁纳米碳管和纳米碳纤维.在相同的反应体系中,采用不同的载气,得到的碳材料的形态有较大不同.经SEM, TEM及Raman等证实,采用氩气和氮气作为载气时,得到了内部填充铁的碳纳米纤维,而且具有较好的类石墨晶体结构;用氢气作为载气时得到了中空的碳纳米管.通过控制氢气和惰性气体的比例,改变了碳纳米管的直径分布.

关键词: 碳纳米管, 碳纳米纤维, 注入CVD法, 载气, 形貌

Aligned multi-walled carbon nanotubes and nanofiber films were grown in quartz tube reactor by an injection chemical vapor deposition method. Various carbon materials were produced with different carrying gas in the same system. Scanning electron microscope images, transmission electron microscope images and Raman spectrum reveal that carbon nanofibers synthesized in inert gases have highly crystalline properties and iron particles were circled with nanofiber wall, and carbon nanotubes with hollow cavity were prepared in hydrogen gas. The distribution of diameters was controlled by changing the ratio of hydrogen to inert gases.

Key words: carbon nanotube, carbon nanofiber, injection CVD, carrying gas, morphology