Method for Production of Carbon Nanotube and Method for Purification of the Same
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United States of America Patent
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Issued Date -
Nov 19, 2009
app pub date -
Nov 29, 2005
filing date -
Nov 29, 2005
priority date (Note) -
Abandoned
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Abstract
The present invention provides a method for producing a carbon nanotube having a high purity and a method for purifying an unpurified carbon nanotube or a carbon nanotube having a low purity. The method for producing a carbon nanotube comprises a step of providing a carbonaceous material containing a carbon nanotube and a step of adding an iron material and hydrogen peroxide to the carbonaceous material to thereby purity a carbon nanotube. It is preferred that an iron powder is used as the iron material. The iron powder is preferably used in a proportion of 0.5 to 20 parts by mass relative to 100 parts by mass of the whole carbonaceous material.
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