Graphene oxide is one of the most important graphene derivates. Due to its unique chemical properties, this compound is largely used as starting point for functionalized products. Functional groups present in grapheme oxide surface have large influence in the following steps of these reactions. Here, we make the evaluation of three different routes to obtain graphene oxide, and which functional groups are present in each product. Based on results, it was possible to conclude that different routes may favor the formation of specific functional groups.
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