Graphene is a two-dimensional material arranged in hexagonal honeycomb structures and is a single layer of graphite. Several fascinating properties of graphene such as a very conductive and highly transparent material is expected to contribute significantly towards the advancement of electronics, solar cell, composites, and medical sector. In this study, atmospheric chemical vapour deposition (APCVD) was used as synthesis method. Methane was used as carbon feedstock, nitrogen as a carrier gas and hydrogen as reducing agent for two types of graphene synthesis which is large area graphene (lateral size >1 cm2) and graphene flakes (lateral size 125 sccm) hydrogen flow rates were supplied. The locations of the catalyst at zone 1 and zone 2 of the horizontal furnace show good graphitic structure formation while at zone 3 amorphous carbon formation is more dominant. N-heptane is found as a useful material for large area graphene transfer that reduces contamination on graphene surface. Cu from etching solution waste can be reused for CuO formation and graphene flakes synthesis using a similar method for synthesis of large area graphene. In conclusion, the catalyst locations in the horizontal CVD and hydrogen flow rates play an important factor in graphene formation. The transfer method using the n-heptane as support layer assisting in graphene transfer process that reduces contamination and damage to graphene structure. Also, the graphene flakes have been successfully synthesized using the CuO / MgO catalyst obtained from recovered Cu
