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

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.
Authors:
;  [1] ;  [2]
  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)
Publication Date:
OSTI Identifier:
22492266
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 5; Journal Issue: 7; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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