Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1558569 | New Carbon Materials | 2009 | 6 Pages |
Abstract
The effects of temperature, reaction time, and flow rate on the structure of carbon nanotubes (CNTs) were studied using catalytic chemical vapor deposition of methane over an Fe-Mo/Al2O3 catalyst. Results show that the temperature is a key parameter to control the wall thickness of the CNTs. Low temperature leads to the formation of multiwalled carbon nanotubes (MWCNTs) with wall thickness of 2-7 nm. Relatively high temperature is in favor of the growth of double-walled carbon nanotubes (DWCNTs), whereas high temperature promotes the generation of single-walled carbon nanotubes (SWCNTs). A further increase of temperature results in the generation of MWCNTs with a wall thickness of 3-15 nm and large carbon particles.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Chemistry
Authors
Jin-ling SONG, Li WANG, Shou-ai FENG, Jiang-hong ZHAO, Zhen-ping ZHU,