I need to have a quality check to buy graphene nanoplatelets. It should not be contaminated with graphite powder.
You can use optical microscope (reflection mode) to quantify the layers of graphene by simple method.
Simply coat it on the substrate and observe it through OM.
Its shows different colors with increase in layers.
Raman spectroscopy can be used to distinguish graphene and graphite:
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Rhys, can you please detail your answer? Infact Raman is not differentiating graphite-graphene mixture, especially when graphene is a nanoplatelet (>15layers).
While PAH are the building block equivalent of Graphene, how does it differ from graphene?
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