I am searching for the carbon nanotubes for very low cost. I have one idea, which is to use graphite (such as that found in pencils.) Can it be converted to carbon nanotubes? If so, what would be the procedure for this?
- Graphite does not contain CNTs, a simple extraction therefore is not possible.
- Graphite seemingly can be converted to CNTs by a "simple" oxidative method published by DW Lee and JW Seo on arxiv.org in 2010.
- The authors claim to have used commercially available graphite powder (45 µm, Aldrich) of high purity (>99.995%), but did not provide any information on the yields.
- Pencils typically contain a mixture of graphite powder and various amounts of clay as a binder.