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The highly uniform and single crystalline Co3O4 nanocubes were synthesized and strongly anchored on the surface of graphene nanosheets via a one-step hydrothermal strategy. Owing to the negatively charged surface, graphene oxide can preferably adsorb Co2+ in the initial solution, subsequently inducing the in-situ nucleation and growth of the Co3O4 nanocubes at the elevated hydrothermal temperature...
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