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Title: Synthesis of Titanium-doped MgO heteronanostructures with tunable band gap
Authors: Sharma U.
Jeevanandam, Pethaiyan
Published in: Journal of Nanoparticle Research
Abstract: TixMg1−xO heteronanostructures (x = 0.02 to 0.50) have been synthesized by a novel thermal decomposition route, and the effect of concentration of titanium and calcination temperature on optical properties of the heteronanostructures has been investigated. Phase analysis using powder X-ray diffraction demonstrates the formation of mixture of MgO and MgTiO3 when x = 0.02 to 0.20 and pure MgTiO3 when x = 0.33 to 0.50. Scanning electron microscopy studies show that the TixMg1−xO samples with x = 0.02 to 0.20 consist of particles with a mixture of flower- and rod-like morphology, whereas the TixMg1-xO samples with x = 0.33 to 0.50 possess rod-like morphology. Transmission electron microscopy studies show that the flowers are in turn formed by assembly of nanoparticles and the hollow rods are formed by aggregation of dumbbell-shaped nanoparticles. Diffuse reflectance spectroscopic studies show that band gap of the TixMg1−xO heteronanostructures can be tuned from 3.2 to 4.2 eV by varying the concentration of titanium and the calcination temperature. Photoluminescence spectra show emission bands in visible and near-infrared regions due to defects present in the TixMg1−xO heteronanostructures. © 2016, Springer Science+Business Media Dordrecht.
Citation: Journal of Nanoparticle Research (2016), 18(4): -
Issue Date: 2016
Publisher: Springer Netherlands
Keywords: Optical properties
Thermal decomposition
TixMg1−xO heteronanostructures
Tuning of band gap
ISSN: 13880764
Author Scopus IDs: 57209094985
Author Affiliations: Sharma, U., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Jeevanandam, P., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Corresponding Author: Jeevanandam, P.; Department of Chemistry, Indian Institute of Technology RoorkeeIndia; email:
Appears in Collections:Journal Publications [CY]

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