Author/Authors :
Liu، نويسنده , , B.C. and Lyu، نويسنده , , Samuel S.C. and Lee، نويسنده , , T.J. and Choi، نويسنده , , S.K. and Eum، نويسنده , , S.J. and Yang، نويسنده , , C.W. and Park، نويسنده , , C.Y. and Lee، نويسنده , , C.J.، نويسنده ,
Abstract :
Single-walled carbon nanotubes (SWNTs) and double-walled carbon nanotubes (DWNTs) are simultaneously synthesized by catalytic decomposition of CH4 over Fe–Mo/Al2O3 catalyst. High-resolution transmission electron microscopy observation shows that produced carbon materials consist of about 70% SWNTs and about 30% DWNTs. The diameters of SWNTs are in the range of 0.8–1.5 nm while the outer and inner diameters of DWNTs are in the range of 1.75–3.1 and 0.95–2.3 nm, respectively. Raman analysis indicates that the synthesized SWNTs and DWNTs have high-quality graphite structure.
