INVESTIGADORES
SERQUIS Adriana Cristina
artículos
Título:
The effect of catalyst composition on carbon nanotube growth
Autor/es:
X. Z. LIAO; A. SERQUIS; J.Y. HUANG; Q. X. JIA; D. E. PETERSON; Y. T. ZHU; H. F. XU
Revista:
APPLIED PHYSICS LETTERS
Editorial:
American Institute of Physics
Referencias:
Año: 2003 vol. 82 p. 2694 - 2696
ISSN:
0003-6951
Resumen:
Transmission electron microscopy was used to probe the compositions of individual CoMobimetal catalyst particles and the morphologies of carbon nanotubes (CNTs) catalyzed by theseparticles under flowing carbon monoxide at 700 °C. It was found that the composition of the catalyst particle at a CNT tip and the distribution of Co within the particle largely determine the morphology of the CNT. A particle with low Co content (,15 at.%) tends to produce a long CNT, while a particle with very high Co content (.85 at.%) tends to produce onion-like structures. Theseobservations provide insight into the CNT growth mechanisms.
