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Preparation and Characterization of Lanthanum Doped Calcium Aluminate Nanophosphor (CaAl2O4: La) by Sol-Gel Method
Abstract: Abstract Lanthanum doped calcium aluminate nanophosphor (CaAl2O4: La) was prepared by sol-gel method. Characterizations such as XRD, SEM, EDAX and PL were done. Monoclinic structure was confirmed by the XRD analysis; the particle size was found to be 27 nm and is determined by (Williamson and Hall plot) W-H plot method. It shows that the particles were of small granular structure, and were interlinked with each other, lead to the …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 6, Issue 1, 2016 · pp. 24–28 Read article
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A Simple Sol–Gel Route for the Synthesis and Characterization of Tm-Doped CaAl2O4 Nanophosphor
Abstract: Calcium Aluminate nanophosphor doped with Thulium (CaAl2O4: Tm) was synthesized by simple sol–gel route. The obtained nanophosphor was characterized by X-ray diffraction technique (XRD). The surface morphology was determined by scanning electron microscopy (SEM). Also photoluminescence spectra (PL), and thermogravimetric analysis/differential scanning calorimetry (TGA/DSC) characterization were done. The XRD revealed the formation of monoclinic structure and the particle size was determined by Scherrer formula. It showed that the particles were …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 6, Issue 1, 2016 · pp. 6–10 Read article
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A Comparative Study of Structure, Morphology and Optical Properties of CaAl2O4 Phosphors by Sol–Gel Method
Abstract: In this paper, monoclinic CaAl2O4 phosphor with different weight percentage of aluminium was synthesized by low temperature sol–gel method. The prepared samples were characterized by X-ray diffraction (XRD) analysis, Fourier transform infra red (FTIR), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and photoluminescence emission spectra (PL). The XRD analysis showed that CaAl2O4 have monoclinic structure. The average size of the particles lies between 88 and 109 nm. It was …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 5, Issue 3, 2015 · pp. 1–10 Read article
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Synthesis and Characterization of Mn Doped ZnO Nanoparticles by Chemical Precipitation Method
Abstract: Normal 0 false false false EN-IN X-NONE X-NONE Nanosized Mn doped ZnO semiconductor (where Mn 0.5%–2.5%) has been synthesized via a chemical precipitation method using zinc acetate hydrate, MnCl2 in alcoholic medium and utilizing polyvinyl pyrolidone (PVP) as capping agent. A differential thermal analysis (DTA) and a thermo-gravimetric analysis (TGA) where used determine the thermal properties of ZnO:Mn. The structural characteristics were examined using X-ray diffraction (XRD).scanning electron microscopy (SEM) …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 3, Issue 2, 2012 Read article