Abstract
The synthesis of multi-walled carbon nanotubes (MWNTs) was performed by the chemical vapor deposition of carbon source (C 2H 2, C 2H 4, methanol, or benzene) using dodecanethiol-stabilized gold nanoparticles (Au-DTs) with monodispersity in size from 3 to 10 nm supported on SiO 2–Al 2O 3 as a catalyst. The influences of reaction temperature, size of Au-DT, and carbon sources on the formed MWNTs were investigated. The diameter of MWNTs could be rationally controlled by changing the size of Au-DT only when C 2H 2 was used as a carbon source.
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