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Carboxylated graphene–ZnO (G-COOZn) composites were grown as ZnO nanoparticles onto graphene sheets by a one-step thermal method using carboxylated graphene (G-COOH) and Zn(NO 3 ) 2 . G-COOH sheets were synthesized from graphene oxide (GO) and chloroacetic acid (Cl–CH 2 –COOH). GO was used as the starting material, as prepared by the Hummers’ method using graphite flakes. GO,...
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