Metal nanoparticles for the catalytic synthesis of carbon nanotubes

Single-wall and multiwall carbon nanotubes are currently the subject of an intense research effort owing to the outstanding properties they may possess. Many synthesis methods have been proposed, most of which involve nanometric metal particles. In this article the various mechanisms proposed for nanotube nucleation and growth from such particles have been reviewed. The micro/nanostructure of the materials obtained by the different methods have also been addressed.