Paper Title
Thermal Chemical Vapor Deposition of Graphene from Waste Engine Oil at Different Vaporization Temperatures

Abstract
Graphene layers were successfully synthesized for the first time using waste engine oil (WEO) as carbon source grown by thermal chemical vapour deposition (TCVD). Under flowing argon atmosphere, WEO was vaporized at different vaporization temperatures of RT, 250, 300, 350 and 400 °C and the graphene layers were synthesized with an optimum synthesis temperature. Raman analysis shows that the graphene synthesized from vaporization of 250 300, 350, and 450 °C promoted the growth of graphene layer, meanwhile the sample prepared at room temperature (RT) did not show any signal of graphene peaks. The XRD results indicate that graphitic reflection peaks of (002), (100), and (101) are observed from the samples. EDX analysis detected the presence of carbon element excited at 0.277 ke V of ionization energy from all the prepared samples. High ionization energy of carbon at 0.277 keV for the samples synthesized with 250 300, 350, and 450 °C vaporization temperatures indicates the presence of carbon element. The excellent results of graphene layer obtained from novel WEO be a promising material in the multi-functional applications and sensing technology. Keywords - Graphene; Waste Engine Oil; Vaporization Temperature; Thermal Chemical Vapor Deposition