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

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Abstract
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°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°C. The waste pyrolysis tire oils separated into three fractions based on its boiling point viz., low boiling point liquid (45-205 °C), moderate oil (205-300 °C) and high boiling point oil (>300 °C ). The low boiling point liquid is a complex mixture of C10-C29 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°C.

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