Robertson, J and Hofmann, S and Cantoro, M and Parvez, A and Ducati, C and Zhong, G and Sharma, R and Mattevi, C (2008) Controlling the catalyst during carbon nanotube growth. In: UNSPECIFIED pp. 6105-6111..Full text not available from this repository.
We have recently been able to grow single-walled carbon nanotubes by purely thermal chemical vapour deposition (CVD) at temperatures as low as 400 degrees C. This has been achieved by separating the catalyst pre-treatment step from the growth step. In the pre-treatment step, a thin film catalyst is re-arranged into a series of nano-droplets, which are then the active catalysts. Both steps have been studied by in-situ environmental transmission electron microscopy and X-ray photoemission spectroscopy. We have also studied the catalyst yield, the weight of nanotubes grown per weight of transition metal catalyst. Using very thin layers of Fe on Al2O3 support in a remote plasma-assisted CVD, we have achieved yields of order 100,000. This may be due to control of catalyst poisoning by ensuring an etching path.
|Item Type:||Conference or Workshop Item (UNSPECIFIED)|
|Uncontrolled Keywords:||Catalysis Crystallization Macromolecular Substances Materials Testing Molecular Conformation Nanotechnology Nanotubes, Carbon Particle Size Surface Properties|
|Divisions:||Div B > Electronic Devices & Materials|
|Depositing User:||Cron Job|
|Date Deposited:||04 Nov 2011 15:46|
|Last Modified:||20 May 2013 01:33|
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