Mass purification method of carbon nanotubes

摘要

A mass purification method of carbon nanotubes, capable of removing impurities sticking to carbon nanotubes. The purification method involves two wet purification steps and one dry purification step, which are performed in sequence. The first wet purification of crude carbon nanotubes is carried out with acid solution. In the second wet purification step, the carbon nanotubes from the first wet purification process are purified using an acetone and acid solution. The dry purification step uses a purification gas to purify the carbon nanotubes from the second wet purification step.