A background level of oxygen-containing aromatics for synthetic control of carbon nanotube structure.
Growth enhancers, most notably water, have been reported to increase catalyst activity, despite constituting 0.02% of the growth ambient, resulting in dramatic increases in vertically aligned carbon nanotube (CNT) forests. We demonstrate a surprising second function of the growth enhancer, i.e., its ability to control the structure of the CNTs exemplified by highly selective double-walled carbon nanotube synthesis using oxygen-containing aromatics. This approach provides an easy and convenient method to grow various kinds of nanotubes from the same catalyst and same growth conditions.
Nanotube Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8565, Japan.
Don N
DN
Futaba
Jundai
J
Goto
Satoshi
S
Yasuda
Takeo
T
Yamada
Motoo
M
Yumura
Kenji
K
Hata