Direct Chemical Vapor Deposition Growth of Graphene Nanosheets on Supported Copper Oxide

Toward high production of graphene flakes – a review on recent developments in their synthesis methods and scalability

“…Since metal catalyst has to be removed via a dissolution-filtration-drying processes before incorporation of graphene into application 72 , it makes the whole process more costly, complicated and timeconsuming. Nevertheless, CVD can produce better structural quality of graphene compared to its top-down counterpart, and their properties were found to be close to the pristine structure of graphene 39,73,74 . Most large area graphene sheets were synthesized via CVD because of the demand for very high structural quality for their application 32,75,76 .…”

“…This form of graphene is also sometimes referred to as graphene nanosheets [38][39][40][41][42][43][44] , graphene microsheets 45 , graphene platelet (or nanoplatelet) 46,47 graphene powder 48,49 or graphene quantum dots 50,51 by other researchers. Until today, the review work on GFs seldom reports several kinds of methods and heavily emphasizes on the route of chemical methods such as pre-oxidization via Hummers' method or modified Hummers' method before exfoliation.…”

Graphene-Based Environmental Sensors: Electrical and Optical Devices

“…The growth step of low solubility substrates (i.e., Cu) occurs when CH 4 decomposes, and C atoms adsorb on its surface and form a film. In high-solubility substrates (i.e., Ni) the C atoms diffuse into the bulk and graphene growth occurs during the cooling down step when C precipitates back to the surface [ 34 , 35 , 36 ]. Although the resulting product is polycrystalline, has grain boundaries and adlayers, the overall quality of the graphene may still offset these considerations [ 37 ].…”