Microwave Assisted Synthesis of Polycrystalline Flower-like ZincOxide Nanostructure Using Dicationic Ionic Liquid

Abstract

In this paper, synthesis of the flower-like zinc oxide was performed using microwave assisted dicationic ionic liquid [mmp(im)2 ]Br2 . The polycrystalline flower-like zinc oxide nanostructure was obtained when a suitable mole ratio (ionic liquid /zinc acetate) and short duration microwave was used. X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence (PL) spectra were employed to characterize of the as-synthesized zinc oxide. The SEM image illustrates that the surface of flower-like zinc oxide is polycrystalline with nanoparticles of about 48 nm. The samples fabricated in presence and absence of ionic liquid exhibited (UV, green-yellow) and (UV, blue, green) emission, respectively, while Commercial ZnO exhibited UV and green emission.