Large-scale growth and characteristics of N-doped carbon nanotubes with ultra-large cavity.
N-doped carbon nanotubes (CNTs) with ultra-large cavity have been synthesized by using a mixture of ZnO and graphite as catalyst in the floating catalyst method. The as-synthesized N-doped CNTs are very pure, and a striking characteristic structure is that the outer diameter is at least 10 times larger than the wall thickness. Moreover, electronic properties analysis reveals that the N-doped CNTs with ultra-large cavity have a reduced room temperature resistance compared with those of the common N-doped CNTs, which give an experimental prove for the previous theoretical predictions.
Wang
Y
Y
Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
Liu
Y Q
YQ
Li
X L
XL
Cao
L C
LC
Wei
D C
DC
Zhang
H L
HL
Shi
D C
DC
Yu
G
G