Upcycling Waste Plastics into Multi-Walled Carbon Nanotube Composites via NiCo2O4 Catalytic Pyrolysis

In this work, multi-walled carbon nanotube composites (MWCNCs) were produced by catalytic pyrolysis of post-consumer plastics with aluminium oxide-supported nickel, cobalt, and their bimetallic (Ni/?–Al2O3, Co/?–Al2O3, NiCo/?–Al2O3) oxide-based catalysts. The influence catalyst composition reaction temperature on the yield structure CNCs investigated. Different temperatures (800, 900, 950, 1000 °C) compositions (Ni, Co, Ni/Co) explored to maximize deposited catalyst. obtained results showed that at same (900 °C), a Ni/Co exhibited higher than individual monometallic catalysts due better cracking capability carbon-hydrogen bonds. With increase temperature, increased first then decreased. At 950 °C, achieved its largest yield, which can reach 255 mg g?1plastic. growth followed “particle-wire-tube” mechanism for all studied This work finds potential application complex oxide composite material generation in wasted plastic.