|
Title
|
|
|
|
Preparation of catalyst and its application to grow MWNTs with high efficiency
|
|
|
Author
|
|
|
|
|
|
|
Abstract
|
|
|
|
| Iron/molybdenum/magnesium mixed oxide prepared by a sol-gel method shows its high efficiency for synthesis of MWNTs through catalytic decomposition of methane using chemical vapor deposition (CVD) method at 1000 degreesC. The weight production of the as-grown MWNTs can reach as high as 30 times of the catalyst in 30 min growth. Upon SEM and TEM observations, the product is found to be compacted bundles of MWNTs. Microstructure of the tubes was characterized by transmission electron microscopy (TEM) and Raman spectroscopy. Thermal gravimetric analysis (TGA) examination showed that the content of MWNT is high. Using this high-efficient catalyst, the cost of producing carbon nanotubes (CNTs) can be greatly reduced. In order to understand the formation of MWNTs bundles and the high efficiency of the catalyst, microstructural evolution of the catalyst at different growth stages to form MWNTs were systematically examined by TEM, and a plausible explanation is presented. (C) 2004 Elsevier B.V. All rights reserved. |
|
|
|
Language
|
|
|
|
English
|
|
|
Source (journal)
|
|
|
|
Diamond and related materials. - Amsterdam
|
|
|
Publication
|
|
|
|
Amsterdam
:
2004
|
|
|
ISSN
|
|
|
|
0925-9635
|
|
|
DOI
|
|
|
|
10.1016/J.DIAMOND.2004.04.011
|
|
|
Volume/pages
|
|
|
|
13
:10
(2004)
, p. 1807-1811
|
|
|
ISI
|
|
|
|
000223883400010
|
|
|
Full text (Publisher's DOI)
|
|
|
|
|
|
|
Full text (publisher's version - intranet only)
|
|
|
|
|
|