Large area graphene (LAG) were synthesized and grown on copper (Cu) foil and nickel (Ni) foil. The synthesis were carried out using atmospheric pressure chemical vapor deposition and methane
decomposition. The highly uniform and i-•' of high quality LAG was produced and was evaluated by Raman spectroscopy mapping, electron diffraction and. trans.mission electron microscopy. Hydrocarbon decompose iri bu!k inside Ni foil and the graphene f0rmed during the.. cooling process of the reaction producing double layer and multi-layer graphene. The absorbed carcon is found to produce nickel-carbide complex inside•Ni WQiCh hinderiqg the etcHing process of Ni and this has enabled the Ni foil to be .. . '1 •'!'I.!:! • !- r !Jed for subsequent graphene synthesis for multiple time:.hi'addition, simultaneous•growth of monolayer graphene• .: :-:. .}i • on,Ni-Cu bimetallic catalyst under single atmospheric pressure CVD was explored through wrapping of a Cu foil over a • .,N.i foil to control the supply of'carbon adatoms at the interface of Ni and Cu. Furthermore, re-utilizing copper foil to synthesized flakes graphene (FG) by new formulation of Cu-MgO catalyst. This has enable the production of LAG and FG as well as fundamental study to understand the difference mechanism and synergy involves in Ni and Cu foil for high quality controlled layer of graphene.
The study of the catalytic activity for graphene formation under atmospheric pressure chemical vapor deposition