Review Of Carbon Nanotubes Growth And Synthesis (original) (raw)
Carbon nanotubes are tubular nanostructures derived from rolled graphene planes. Carbon nanotubes are fullerenes related structures but a fullerenes's carbon form a sphere; while a nanotubes are cylindrical. The growth mechanism of carbon nanotubes depend on the synthesis method. Carbon nanotubes were synthesized through either physical or chemical method. Physical methods discussed were arc discharge and laser ablation method. Arc method is the primary technique used to synthesize carbon nanotubes. Laser. ablation is improved development of arc method leading to production of highly pure products of carbon nanotubes at lower energy consumption. However, due to hil:!h operating cos~as well as low produ.ction rate has made large. scale producti.on 0 () /l (?13k nanotubes usmg these methods dIfficult. Therefore, chemICal method, I.e.,' I:' decomposition of hydrocarbon method is believed to appear as a promising method for scalling up the production of uniform size carbon nanotubes at a relatively low cost.
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