The nanostructure of metal oxides has been a subject of intense research due to their potential applications. CuO, a p-type semiconducting oxide, is having a monoclinic structure and an indirect band gap of 1.4 eV. It’s compositional simplicity, strong electron to electron correlation, and monoclinic structure render it an optimal candidate for applications in solar cells, catalysis, etc.
This study investigates the direct oxidation and growth of 3D CuO nanogrids from copper mesh substrates on which organic nanofibers were deposited by electro spinning and act as templates guiding the growth of the novel nanoparticle networks. To study the synthesis of 3-D CuO nanostructures, the experiment was assessed in effects of heating temperature, heating time and heating rate. Novel, self-supported CuO nanostructures in an open 3D configuration formed continuous networks of extreme surface area. The unique CuO nanostructure first occurred by Cu diffusion within the organic nanowires on the copper substrate and subsequent oxidation of the metallic core. The morphology, composition, and structures of the CuO nanostructure were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and x-ray diffraction(XRD).

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