The Synthesis of Graphene at Different Deposition Time from Palm Oil via Thermal Chemical Vapor Deposition

摘要

The basic building of graphitic materials is graphene that can range from zero-dimensional to three-dimensional. Graphene is a single atomic layer of sp~2 bonded carbon atoms. It becomes most potential new materials to replace silicon due to its fascinating properties. In this study, the graphene growth was observed at different deposition time. The 1cm x lcm polycrystalline nickel substrate was cleaned by etching process. The palm oil, carbon source, was placed in the precursor furnace and the nickel substrate was placed in the second furnace (deposition furnace). The palm oil will mix with Argon and Hydrogen gas was used as carrier gas in the CVD under certain temperature and pressure to undergo pyrolysis process. The deposition temperature was set at 900 °C and the deposition time was varied from 5-60 minutes. The graphene was growth at ambient pressure in the CVD system. Raman spectrometer and atomic force microscopy revealed the structural properties and surface topography of the grapheme on the nickel substrate. The D, G and 2D band appear approximately at 1378 cm~(-1), 1580 cm~(-1) and 2696 cm~(-1). It can be concluded that the graphene has successfully synthesized at different deposition time.