Synthesis, Purification and Identification of Carbon Nanotubes:A Review

Carbon nanotubes a nano device based on their electrical, mechanical, optical and chemical properties categorized as single walled nanotubes (SWNTS), multi walled nanotubes (MWNTS), torus and nanobuds. Cup stacked carbon nanotubes, extreme carbon nano tubes etc. The nano tubes are composed entirely of sp² bonds which are stronger than sp³ bonds of alkanes provides them unique strength. Different nanotubes structures are different in chemical reactivity, electrical conductivity, optical activity, mechanical strength, one dimensional support, hardness, kinetic etc. Because of the inflammation, epithelioid granuloma, fibrosis and biochemical and toxicological changes in lungs likes toxicities, we are more focus on specific synthesis methods and purification techniques of carbon nanotubes. An identification technique of nano tubes gives new era to the applications of carbon nanotubes in biomedical and pharmaceuticals.