Novel synthesis of hafnium oxide nanoparticles by precipitation method and its characterization

[Display omitted] ► HfO2 NPs were prepared by precipitation method. ► XRD and Raman analysis revealed the presence of monoclinic phase. ► The average particle size of HfO2 NPs is 20nm. ► The method is a simple, low cost and eco-friendly approach. Hafnium oxide nanoparticles (HfO2 NPs) have been succ...

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Bibliographic Details
Published in:Materials research bulletin 2012-09, Vol.47 (9), p.2680-2684
Main Authors: Ramadoss, Ananthakumar, Krishnamoorthy, Karthikeyan, Kim, Sang Jae
Format: Article
Language:English
Subjects:
A. Nanostructures
A. Oxides
B. Chemical synthesis
C. X-ray diffraction
D. Optical properties
FIELD EMISSION
FOURIER TRANSFORMATION
HAFNIUM OXIDES
INFRARED SPECTRA
MATERIALS SCIENCE
MONOCLINIC LATTICES
NANOSCIENCE AND NANOTECHNOLOGY
NANOSTRUCTURES
OPTICAL PROPERTIES
PARTICLE SIZE
PRECIPITATION
RAMAN SPECTROSCOPY
SCANNING ELECTRON MICROSCOPY
SYNTHESIS
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY
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Summary:[Display omitted] ► HfO2 NPs were prepared by precipitation method. ► XRD and Raman analysis revealed the presence of monoclinic phase. ► The average particle size of HfO2 NPs is 20nm. ► The method is a simple, low cost and eco-friendly approach. Hafnium oxide nanoparticles (HfO2 NPs) have been successfully synthesized by means of a novel precipitation method and were characterized by using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Field emission scanning electron microscopy (FESEM), UV–visible, Fourier transform infrared (FTIR) and laser Raman spectroscopy. The XRD and Raman analysis revealed the presence of pure monoclinic HfO2 NPs. FESEM image showed that the HfO2 NPs were of spherical shape with an average particle size of about 20nm. The optical band gap of the HfO2 NPs was found to be 6.12eV. Advantages of this method were simple and low cost of synthesis of HfO2 NPs includes the small and narrow particle size distribution.
ISSN:0025-5408
1873-4227
DOI:10.1016/j.materresbull.2012.05.051