B carbon nanoparticles from carbide by catalyst assisted chlorination

The nanostructure of carbon materials synthesised via chlorination of various metal and metalloid carbides and their mixtures has been investigated by low-temperature nitrogen sorption, X-ray powder diffraction and high-resolution electron microscopy techniques. The carbon nanostructure and its crystallinity are strongly affected by transition metal catalysts and synthesis temperature. A clear relationship between carbon nanostructure formation and catalysts concentration revealed that only very low concentration (approximately 1 mg per gram of carbide) of Cobalt (Ni, Fe) in reaction medium supports the conversation of Al C to nanobarrel-like carbon nanoparticles. 43