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P. Veerakumar et al.
Fig. 7.3 Schematic representation of catalytic active graphene sites on the edges, defects,
heteroatoms, and groups. (Reproduced from Ref. [66] with permission of the American Chemical
Society)
Fig. 7.4 Schematic diagram for the preparation of N-graphene with different N states. (Reproduced from Ref. [67] with permission of the Royal Society Chemistry)
7.3.2 Oxidation Reactions
Currently, the GO with oxygen-containing functional groups is applied to efficiently
catalyze the oxidative reactions for value-added chemicals [33, 68]. Therefore, GO
can be considered as a green oxidant to oxidize substituted cis-stilbenes to their
corresponding diketones [69, 70]. On the other hand, a proton source is necessary
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