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

作者：Yu Ouyang^*; Li Daoyong; Cao Weiran; Shi Shaohua; Chen Li

来源：Nanoscale Research Letters, 2009, 4(6): 574-577.

DOI：10.1007/s11671-009-9284-z

• Single-walled carbon nanotubes
• Catalytic chemical vapor deposition
• Raman spectroscopy

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.

• 出版日期2009-6
• 单位临沂大学