Controlling the growth of single-walled carbon nanotubes using alcohol catalytic CVD method

Asyadi Azam, Mohd and Mohamed, Mohd Ambri and Shikoh, Eiji and Fujiwara, Akihiko (2010) Controlling the growth of single-walled carbon nanotubes using alcohol catalytic CVD method. In: The 2nd International Conference on Engineering and ICT (ICEI 2010), 18-20 February 2010, Holiday Inn, Melaka, Malaysia.

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Single-walled carbon nanotubes (SWCNTs) were grown from Co catalyst thin-films using alcohol catalytic CVD method at different CVD process times. Structural properties of grown SWCNTs have been investigated by means of Raman spectroscopy with various laser excitations. SWCNTs were growing until t = 20 min, but Raman intensity of SWCNTs decreased for the longer CVD process times. The quality level of as-grown SWCNTs also decreased at the longer CVD process times, likewise the Raman intensities trend. From the Raman RBM intensity analysis, relatively thinner SWCNTs are likely proposed to be burning out during the longer CVD process times (t = 30 to 115 min), suggesting lower stability in their structures. This research work suggests that the Co catalyst poisoning and SWCNTs burning phenomenon occurs when the CVD process time is more than 20 min.

Item Type: Conference or Workshop Item (Speech)
Subjects: Q Science > Q Science (General)
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Manufacturing Engineering > Department of Engineering Materials
Depositing User: Dr Mohd Asyadi 'Azam Bin Mohd Abid
Date Deposited: 24 Jul 2012 03:47
Last Modified: 28 May 2015 03:26
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