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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1141Structural, Thermal and Optical Properties of...

Structural, Thermal and Optical Properties of Nickel Oxide (NiO) Nanoparticles Synthesized by Chemical Precipitation Method

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Abstract:

Nanocrystalline NiO has been prepared successfully by chemical precipitation route using nickel nitrate hexahydrate (Ni (NO₃)₂ _·6H₂O) and sodium hydroxide (NaOH) aqueous solution at a temperature of 60 ̊C. Their compositional, structural, morphological, thermal and optical properties were studied using energy dispersive analysis of X-rays (EDAX), X-ray diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), ultraviolet-visible (UV-Vis) spectroscopy, photoluminescence (PL) spectroscopy and Raman spectroscopy. From XRD pattern we confirmed the face centered cubic (fcc) structure of the synthesized NiO nanoparticles. The selected area electron diffraction (SAED) pattern indicated the same crystalline planes as seen in XRD pattern. TGA indicates good thermal stability of synthesized NiO nanoparticles and the optical absorption spectrum of NiO nanoparticles shows the strong absorption edge at 235nm (4.10eV). PL spectra of NiO nanoparticles shows two wide emission peaks at 420nm (2.95eV) and 440nm (2.82eV) and a strong–broad peak at 460nm (2.70eV) in violet emission band whereas the Raman peak observed at 518cm^-1 shows the Ni-O stretching mode of vibration.

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Periodical:

Advanced Materials Research (Volume 1141)

Pages:

65-71

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1141.65

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Online since:

August 2016

Authors:

M.P. Deshpande*, Kiran N. Patel, Vivek P. Gujarati, Kamakshi Patel, S.H. Chaki

Keywords:

Chemical Route, Nio Nanoparticles, PL Spectroscopy, Raman Spectroscopy, XRD

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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