Double-walled carbon nanotubes fabricated by a hydrogen arc discharge method

作者：Hutchison JL; Kiselev NA^*; Krinichnaya EP; Krestinin **; Loutfy RO; Morawsky AP; Muradyan VE; Obraztsova ED; Sloan J; Terekhov SV; Zakharov DN

来源：Carbon, 2001, 39(5): 761-770.

DOI：10.1016/S0008-6223(00)00187-1

• carbon nanotubes
• plasma deposition
• transmission electron microscopy
• Raman spectroscopy
• microstructure

Double walled carbon nanotubes (DWNTs) were obtained by the are discharge technique in an atmosphere of Ar and H-2 mixture (1:1/v:v) at 350 Torr. The catalyst was prepared from a mixture of Ni, Co, Fe and S powders heated in an inert gas atmosphere at 500 degreesC for 1 h. High resolution electron microscopy (HREM) revealed that the dominant type of obtained nanotubes were DWNTs with outer diameter in the range of 1.9-5 nm and inner tube diameters in the range 1.1-4.2 nm. As a rule, the DWNT tubes form into bundles. Occasionally single walled nanotubes (SWNTs) were observed by HREM although Raman spectroscopy did not reveal the presence of significant quantities of these tubules in the bulk product.

• 出版日期2001