Abstract
Graphene is a unique two-dimensional material, and has unusual properties, including extremely high specific surface area, thermal conductivity, mechanical stiffness, and extraordinary electronic transport properties. More meaningfully, the property of graphene can be modified through elemental doping, surface assembly, plasma etching, and many others. In this paper, flower-like ZnO nanosheets were successfully grown on the O2 plasma treated monolayer graphene using a facile hydrothermal method. The surface morphology and structure, as well as the electrical properties of the samples were investigated. As an application, the photocatalytic property of the as-synthesized ZnO nanosheets was studied. Our report presented here provide an easier and controllable method to synthesize ZnO nanostructures, which have large surface-to-volume ratio and show an improved photocatalytic property due to the synergetic effects of the high specific surface area of the ZnO nanosheets and the fast charge transfer from the ZnO nanosheets to the graphene.
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