| 1 | Experimental evidence for the formation mechanism of metallic catalyst-free carbon nanotubes显示文摘Our work reported that the so-called pure carbon nanotubes(CNTs)can be synthesized without metallic catalyst by chemical vapor deposition(CVD).The as-prepared CNTs have average diameter of 50 nm and length over several microns.Analysis of intermediate objects in the products indicates that their formation mechanism follows the wire-to-tube model.Besides,according to thermodynamic analysis of the driving force combing with experimental results,we find that the thermal gradient can effectively favor the formation of CNTs in our metallic catalyst-free CVD. | Y.H.Tang X.C.Li J.L.Li L.W.Lin H.F.Xu B.Y.Huang | 2010 | Nano-Micro Letters2010，2，1： | 1 |
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