From Cheap Tubes, Inc.
"The carbon arc discharge method, initially used for producing C60 fullerenes, is one of the most common and perhaps easiest way to produce CNTs, as it is rather simple. However, it is a technique that produces a complex mixture of components, and requires further purification - to separate the CNTs from the soot and the residual catalytic metals present in the crude product.
This method creates CNTs through arc-vaporization of two carbon rods placed end to end, separated by approximately 1mm, in an enclosure that is usually filled with inert gas (helium, argon) at low pressure (between 50 and 700 mbar). Recent investigations have shown that it is also possible to create CNTs with the arc method in liquid nitrogen. A direct current of 50 to 100 A, driven by a potential difference of approximately 20 V, creates a high temperature discharge between the two electrodes.
Product Announcements
|
|
||||||
|
|
||||||
|
Topics of Interest
2 Carbon Nanotubes and Nanofibres Carbon nanotubes are often seen as the intersection of traditional carbon fibres with the fullerene family [6]. It was only realised relatively recently that solids...
Chemical vapor deposition (CVD) of hydrocarbons over a metal catalyst is a classical method that has been used to produce various carbon materials such as carbon fibers, filaments, etc. for over...
"In 1996, a dual-pulsed laser vaporization technique was developed, which produced SWNTs in gram quantities and yields of >70wt% purity. Samples were prepared by laser vaporization of graphite rods...
Qianwang Chen, Zhao Huang, University of Science and Technology of China, Hefei 230026, PR of China 11.1 Introduction Carbon is quite an important element in our lives. Existing...
Ball milling and subsequent annealing is a simple method for the production of CNTs. It is well-established that mechanical attrition of this type can lead to fully nanoporous microstructures, it was...
