Purification and size-selection of carbon nanotubes (pages 827–831)
Dr. Jean-Marc Bonard, Dr. Thierry Stora, Dr. Jean-Paul Salvetat, Frédéric Maier, Dr. Thömas Stöckli, Dr. Claus Duschl, Dr. László Forró, Prof. Walt A. de Heer and Prof. André Châtelain
Article first published online: 29 OCT 2004 | DOI: 10.1002/adma.19970091014
A non-destructive method for purifying carbon nanotubes produced by are discharge is described. The nanotubes, in the form of a kinetically stable colloidal dispersion in a water–surfactant solution, are separated from the nanoparticles by filtration. The Figure shows that purified nanotubes after two filtration steps. Through controlled flocculation, nanotube size election is also possible.