Synthesis of Carbon Nanotubes
Carbon nanotubes (CNTs) are allotropes of graphitic carbon with a cylindrical structure and diameters of <100 nm. A CNT can consist of one or many concentric graphene sheets rolled up as cylinders. CNTs are of interest for a wide variety of technological applications. In this entry, the various experimental methods to synthesize carbon nanotubes are introduced.
Carbon nanotubes (CNTs) were first brought to worldwide attention by Iijima in 1991  after he analyzed, by electron microscopy, the samples produced during an electrical arc discharge between carbon rods held in a helium atmosphere. He observed nanoscale hollow tubes, similar to those seen by Russian researchers in the 1950s . Carbon nanotubes can be visualized as graphene sheets rolled up to form tubes; if one sheet is rolled up, a single-walled carbon nanotube (SWCNT) is formed. The structures formed when two or more concentric tubes are present...
KeywordsCarbon Nanotubes Chemical Vapor Deposition Chemical Vapor Deposition Process Catalyst Nanoparticles Molybdenum Carbide
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