Synthesis of Multiwalled Carbon Nanotubes by Catalytic Combustion of Polypropylene

New for old: A novel catalytic combustion method to synthesize multiwalled carbon nanotubes (MWNTs, see SEM image) in situ in high yields from polypropylene as the carbon source in the presence of an organic-modified clay and a supported nickel catalyst is reported. The method allows new high-value MWNTs to be created from used polypropylene in an energy-saving and environmentally friendly process.