A Temperature Window for the Synthesis of Single-Walled Carbon Nanotubes by Catalytic Chemical Vapor Deposition of CH4 over Mo2-Fe10/MgO Catalyst

被引：13
|
作者：
Yu, Ouyang [1 ]
Li Daoyong [1 ]
Cao Weiran [1 ]
Shi Shaohua [1 ]
Chen Li [1 ]
机构：
[1] Lin Yi Normal Univ, Lab Nanofunct Mat, Linyi 276005, Shandong, Peoples R China
来源：
NANOSCALE RESEARCH LETTERS | 2009年 / 4卷 / 06期
关键词：
Single-walled carbon nanotubes; Catalytic chemical vapor deposition; Raman spectroscopy; DECOMPOSITION; GROWTH;
D O I：
10.1007/s11671-009-9284-z
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A temperature window for the synthesis of single-walled carbon nanotubes by catalytic chemical vapor deposition of CH4 over Mo-2-Fe-10/MgO catalyst has been studied by Raman spectroscopy. The results showed that when the temperature is lower than 750 A degrees C, there were few SWCNTs formed, and when the temperature is higher than 950 A degrees C, mass amorphous carbons were formed in the SWCNTs bundles due to the self-decomposition of CH4. The temperature window of SWCNTs efficient growth is between 800 and 950 A degrees C, and the optimum growth temperature is about 900 A degrees C. These results were supported by transmission electron microscope images of samples formed under different temperatures. The temperature window is important for large-scale production of SWCNTs by catalytic chemical vapor deposition method.
引用
收藏
页码：574 / 577
页数：4
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