Synthesis of multi-walled carbon nanotubes using tire pyrolysis oil as a carbon precursor by spray pyrolysis method

Synthesis of multi-walled carbon nanotubes (MWNTs) by spray pyrolysis method on quartz substrate using tire pyrolysis oil as a carbon precursor with ferrocene as a catalyst at 950 degrees C is achieved. In the first phase of the present work, waste tire was converted into tire pyrolysis oil by thermal pyrolysis process. The maximum pyrolytic yield of 40.0 wt.% was obtained at 400 degrees C. The waste pyrolysis tire oils separated into three fractions based on its boiling point viz., low boiling point liquid (45-205 (A) over cap degrees C), moderate oil (205-300 (A) over cap degrees C) and high boiling point oil (>300 (A) over cap degrees C). The low boiling point liquid is a complex mixture of C-10-C-29 organic compounds. In the second phase of the investigation, the organic liquid fraction was chosen as a carbon precursor for the synthesis of MWNTs. MWNTs were synthesized from low boiling point liquid by spray pyrolysis using ferrocene as a catalyst on quartz substrate at 950 degrees C.