Abstract
The size and morphology of nanomaterials replicate optical, electrical, and mechanical properties and their applications. In this paper, for the first time, ZnO hierarchical nanostructures were grown on Zn foil through electrochemical anodization in the presence of fluoride ions at room temperature in water/glycerol electrolyte. Fluoride ions are vital for development of chelation reactions and the formation of ZnO hierarchical nanostructures. XRD analysis confirmed the ZnO crystal phase to be wurtzite, and the Raman analysis confirmed the crystal phase to be wurtzite hexagonal. The surface morphology of ZnO reveals that the nanostructures grown on Zn foil are hierarchical nanoflowers with an even distribution. The identified binding energies from the XPS spectrum confirmed the Zn2+ state. Such unique hierarchical architectured ZnO can be used for designing high-performance optoelectronic devices such as LED lights, photodiodes, nanosensors, and solar cells.
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