Structural properties and optical characterization of flower-like Mg doped NiO

Ghazaleh Allaedini, Payam Aminayi, Siti Masrinda Tasirin

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In this study, un-doped and Mg doped NiO nanoparticles have been synthesized through a simple sol-gel method. To investigate the effect of Mg-doping on the structure of NiO, the obtained nanoparticles were characterized using scanning electron microscopy (SEM). Flower/star like morphology was clearly observed in the SEM micrographs. The BET (Brunauer-Emmett-Teller) nitrogen absorption isotherm exhibits high specific surface area (∼37 m<sup>2</sup>/g) for the Mg doped NiO nanoparticles. X-Ray diffraction (XRD) of the prepared Mg-NiO nanoparticles showed a face-centered cubic (f.c.c) structure, and the average particle size was estimated to be 32 nm using Scherrer's formula. Energy Dispersive X-Ray (EDX) confirms that the NiO particles are successfully doped with Mg. Photoluminescence (PL) and UV-Vis optical absorption characteristics of the prepared nanoparticles have also been investigated in this study. The PL emission response showed a blue shift when NiO was doped with Mg, which is indicative of interstitial oxygen. The UV-Vis results demonstrate a band gap increase as NiO nanoparticles are doped with Mg.

Original languageEnglish
Article number077161
JournalAIP Advances
Volume5
Issue number7
DOIs
Publication statusPublished - 1 Jul 2015

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nanoparticles
photoluminescence
scanning electron microscopy
blue shift
interstitials
isotherms
optical absorption
x rays
gels
nitrogen
stars
oxygen
diffraction
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Structural properties and optical characterization of flower-like Mg doped NiO. / Allaedini, Ghazaleh; Aminayi, Payam; Tasirin, Siti Masrinda.

In: AIP Advances, Vol. 5, No. 7, 077161, 01.07.2015.

Research output: Contribution to journalArticle

Allaedini, Ghazaleh ; Aminayi, Payam ; Tasirin, Siti Masrinda. / Structural properties and optical characterization of flower-like Mg doped NiO. In: AIP Advances. 2015 ; Vol. 5, No. 7.
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