Which method uses oxidizing agents to convert graphite into graphite oxide for the production of graphene?

Which method uses oxidizing agents to convert graphite into graphite oxide for the production of graphene? Correct Answer Hummer’s method

Hummer’s method uses oxidizing agents such as potassium permanganate (KMnO4) to oxidize graphite to graphite oxide (GO). This is further reduced to graphene using reducing agents such as hydrazine. The modern modified Hummer’s method is carried out in three basic steps- oxidation, reduction and post-treatment.
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