It is known that the ID/IG ratio is inversely proportional to the reciprocal of the average crystallite size in graphite materials. The oxygen functional groups in the GO sheets can be removed by a chemical reduction, and the conjugated G network (sp2 carbon) will be re-established. However, the size of the re-established G network is smaller than the original one, which
would consequently lead to an increase in the ID/IG ratio.
I have similar problem and I hope Raman or carbon expert can offer a explaination about Raman of the different types of graphene and Graphite Oxide. this is a very important charaterization method for graphene and graphite oxide. Many thanks
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