One Step Synthesis and Growth Mechanism of Carbon Nanotubes

摘要

A simple one step,reproducible,synthesis route for carbon nanotubes was proposed.No external catalyst was used for the synthesis.These nanotubes were obtained after decomposition of acetone at 650 ℃ in a specially designed autoclave.The pressure generated due to decomposition of acetone played a vital role in the synthesis.The X-ray diffraction pattern and transmission electron microscopy of the sample showed that the diameter of nanotubes is in the range of 3—14 nm.The thermo gravimetric analysis showed 3%weight loss below500 ℃;the content of amorphous carbon is very less.The growth mechanism of CNTs was also proposed in the present paper.