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Thermogravimetric analysis of cobalt-filled carbon nanotubes deposited by chemical vapour deposition

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Title Thermogravimetric analysis of cobalt-filled carbon nanotubes deposited by chemical vapour deposition
 
Creator RAMESH BABU, P
BLAU, WJ
TYAGI, PK
MISRA, DS
ALI, N
GRACIO, J
CABRAL, G
TITUS, E
 
Subject carbon nanotubes
chemical vapor deposition
thermogravimetric analysis
 
Description In this paper, we report results from an investigation studying the purification of Co-filled carbon nanotubes (CNTs) using Thermogravimetric analysis (TGA). The as-grown CNTs were prepared using Microwave Plasma Chemical Vapour Deposition (MPCVD). Transmission electron microscopy (TEM), Fourier Transform Infrared (FTIR) and Raman spectroscopy were used to characterise the CNT samples. The CNTs produced by MPCVD were filled with cobalt and consisted of thick multi-walls. After TGA purification at 900 °C, 30 wt.% Co-filled CNTs remained in the TGA pan. However, while investigating the un-filled commercial CNTs (thin multiwalled), the sample completely burnt out at around 650 °C in the TGA furnace. The high thermal stability and the ability of thick-walled CNTs to act as an effective protective shield which prevents the oxidation of encapsulated cobalt have been demonstrated.
 
Publisher Elsevier
 
Date 2009-04-28T05:27:36Z
2011-12-08T06:47:00Z
2011-12-26T13:01:48Z
2011-12-27T05:46:56Z
2009-04-28T05:27:36Z
2011-12-08T06:47:00Z
2011-12-26T13:01:48Z
2011-12-27T05:46:56Z
2006
 
Type Article
 
Identifier Thin Solid Films 494(1-2), 128-132
0040-6090
10.1016/j.tsf.2005.08.220
http://hdl.handle.net/10054/1274
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1274
 
Language en