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

Journal Article · Wed Jul 15 04:00:00 EDT 2015 · AIP Advances

DOI:https://doi.org/10.1063/1.4927508· OSTI ID:22492266

Allaedini, Ghazaleh; Tasirin, Siti Masrinda ^[1]; Aminayi, Payam ^[2]

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1. Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor (Malaysia)
2. 4601 Campus Drive, Western Michigan University. Department of Chemical and Paper Engineering, College of Engineering and Applied Sciences, Parkview Campus, Kalamazoo, Michigan 49008 (United States)

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} /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.

• OSTI ID: 22492266
• Journal Information: AIP Advances, Journal Name: AIP Advances Journal Issue: 7 Vol. 5; ISSN AAIDBI; ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION
DOPED MATERIALS
FCC LATTICES
ISOTHERMS
MORPHOLOGY
NANOPARTICLES
NICKEL OXIDES
NITROGEN
OXYGEN
PARTICLE SIZE
PHOTOLUMINESCENCE
SCANNING ELECTRON MICROSCOPY
SOL-GEL PROCESS
SPECIFIC SURFACE AREA
X RADIATION
X-RAY DIFFRACTION