Generation of multiwalled carbon nanotubes from iron-phthalocyanine polymer and their novel dielectric properties

Large-scale production of high dielectric multiwalled carbon nanotubes using iron-phthalocyanine polymer as only carbon source at ambient pressure in nitro atmosphere under 800 degrees C have been reported here. The dielectric properties of the synthesized carbon tubes were measured at 2-18 GHz. Furthermore, well-ordered mesostructured carbons with graphitic framework walls were conveniently obtained by continuing heating the carbon tubes to 1000 degrees C, the mesoporous carbons processed high BET surface of 276 m(2) g(-1) and narrow pore size dispersion. SEM, TEM, XRD and N-2 adsorption/desorption methods were employed to figure the detail structure information of materials. (C ) 2010 Elsevier B.V. All rights reserved.