Question

Chemical vapour deposition method for synthesis of carbon nano tubes

Answer 1

Chemical vapor deposition based synthesis of carbon nanotubes and nanofibers using a template method

G Che, BB Lakshmi, CR Martin, ER Fisher, Rodney S Ruoff

Chemistry of Materials 10 (1), 260-267, 1998

We have developed a new approach for preparing graphitic carbon nanofiber and nanotube ensembles. This approach entails chemical vapor deposition (CVD) based synthesis of carbon within the pores of an alumina template membrane with or without a Ni catalyst. Ethylene or pyrene was used in the CVD process with reactor temperatures of 545 °C for Ni-catalyzed CVD and 900 °C for the uncatalyzed process. The resultant carbon nanostructures were uniform hollow tubes with open ends. Increasing the deposition time converted the carbon