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ZnO nanostructures have been successfully prepared by dissolution–reprecipitation of micro-sized ZnO powder from aqueous ammonium hydrogencarbonate solution in the presence of thiourea, followed by calcination at 400°C for 1 h. The products were characterized by simultaneous thermal analysis, x-ray diffraction, scanning electron microscopy, transmission electron microscopy, selected-area electron diffraction, and Fourier-transform infrared spectroscopy analysis. The results reveal that the morphology and particle size of the as-prepared ZnO samples are susceptible to the amount of added thiourea. The developed method has potential for application in industry due to simple processing and inexpensive reagents.
Khoshhesab et al. (Mon,) studied this question.