Carbon filaments have been obtained by the thermal decomposition of mesitylene in the presence of a strong magnetic field. The shape dependence of the pristine carbon filaments on increasing the magnetic field is demonstrated. The proposed mechanism for filament growth involves the formation of a colloid-like system during dehydrogenation and dissociation of mesitylene. The imposed orientation of graphitic clusters (basic structural units) in the strong magnetic-field forces those located at the curved surfaces forming the tips of the filaments to expose their reactive edges, facilitating the observed preferential growth of filaments.
|Number of pages||6|
|State||Published - Aug 2006|
Bibliographical noteFunding Information:
V.G. Pol and S.V. Pol thanks Bar-Ilan University, Israel for the financial assistance. J. Calderon-Moreno acknowledges financial support from the MEC project MAT04-01214-323, and Generalitat de Catalunya grant SGR2005-00535.
- Carbon filaments
- Scanning electron microscopy