Are there any differences between Graphene Nanoplates(GNPs), Graphite Nanosheets and Expanded Graphite(EG)? Are they contain any functional group such as hydroxy, epoxy, carboxyl group?
Graphite is multiple irregular layers of naturally formed graphene.
Graphene nano platelets (GNPs) are new type of nanoparticles from graphite . GNPs are multilayered and typically have a thickness ranging from ~5-15 nm and many have ~ 4-12 layers . Particle diameters can range from sub-micron to 100 microns.
Expandable graphite(EG) is a synthesized intercalation compound of graphite that expands or exfoliates when heated. EG is synthesized by treating of graphite flakes with an intercalation reagent( such CTAB) which migrate between the graphene layers in a graphite .When intercalation graphite is exposed to a rapid increase in temperature, the intercalation compound decompose into gaseous products which causes an expand in graphite and increase in the volume , lowering of bulk density, and increase in surface area.
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