Synthesis of carbon nanoparticles from tyre pyrolysis oil using CO_{2 laser and their characterisation

The growth of transportation industry has contributed to the increasing number of waste tyre globally. Waste tyre is harmful to the environment and to combat this problem, utilisation of waste tyre is an ideal method. The technology of converting waste tyre into oil using pyrolysis technology has derived researchers involved in the process of transforming pyrolysis oil into value added product. Therefore, in this study, tyre pyrolysis oil (TPO) was used to synthesise carbon nanoparticles (CNPs) using CO2 laser as the main heating source. The experiment was conducted in N2 gas atmosphere at 0.2 l/min flow rate. Temperature and reaction time was set for 400°C, 500°C, 600°C and 5 min, 10 min, 15 min respectively. Different pump speed of 1 rpm, 2 rpm and 3 rpm were applied. From the results, the maximum yield for CNPs synthesised was found at 500°C with holding time of 10 minutes and speed of 3 rpm with 0.0734 grams per cycle. Sample characterisation by FESEM, EDX and XRD has shown that prepared CNPs consist large amount of amorphous structure with size between 40-70 nm in diameter whereas BET surface area was 13.8 m2/g.