from the conferences organized by TANGER Ltd. provisional website
Zinc oxide is multifunctional material used for decades in industrial scale due to its unique physical properties. By appropriately chosen morphology of particles, we can get additional value from this “traditional” material. However, for optimal results, it is necessary to manage synthesis of different morphology. Here we report fast and economical method of ZnO synthesis by precipitation from aqueous solutions of zinc acetate by sodium hydroxide. We have studied, how concentration ratio R = [NaOH] / [Zn2+] and solution addition order can affect product morphology and composition. By this synthetic method we can selectively prepare different particle shapes (spheres, urchins, petals, rods) of pure ZnO with yield exceeding 75 %. By reverse addition of reactants, finely dispersed nanoparticles can be obtained by elimination of growth step during the synthesis. For product characterization XRD, SEM, TGA and Raman spectroscopy were used.Keywords: Zinc oxide, nanoparticles, morphology, synthesis, precipitation
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