Yes, it is. My understanding is that there are still barriers to producing enough graphene at a large enough scale to make many of its uses commercially viable.
> But it has been difficult to produce large quantities of single-layer graphene using existing methods, such as chemical vapour deposition (CVD). Current production routes are also quite costly.
> On the other hand, said Dr Nair, "graphene oxide can be produced by simple oxidation in the lab".
> "In terms of scalability and the cost of the material, graphene oxide has a potential advantage over single-layered graphene."