Abstract
Hafnium oxide (HfO2) nanoparticles (NPs) have been prepared by a simple sonochemical method at room temperature. The as prepared NPs were characterized with X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, laser Raman spectroscopy, field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and UV–Visible spectroscopy. The XRD, FTIR and laser Raman patterns reveal that the NPs are in monoclinic phase. From FESEM and TEM observations, the size of the HfO2 NPs was estimated to be significantly smaller than 20nm. The sonochemical method is one of the green synthesis routes to prepare nanoparticles; it takes short reaction time and is cost effective compared to other methods.
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