Chemical synthesis, structural characterization and optical properties of nanophase alpha -Ag sub(2)WO sub(4)

Silver tungstate ( alpha -Ag sub(2)WO sub(4 )) nanoparticles were synthesized by chemical precipitation method. Thermodynamic stability of the alpha -Ag sub(2)WO sub(4) nanoparticles was studied by thermogravimetric and differential thermal analysis. These nanoparticles were structurally characteriz...

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Bibliographic Details
Published in:Indian journal of physics 2015-09, Vol.89 (9), p.889-897
Main Authors: Sreedevi, A, Priyanka, K P, Babitha, K K, Aloysius Sabu, N, Anu, T S, Varghese, T
Format: Article
Language:English
Subjects:
Diffraction
Nanoparticles
Nanostructure
Optical properties
Scanning electron microscopy
Silver
Synthesis (chemistry)
X-rays
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Summary:Silver tungstate ( alpha -Ag sub(2)WO sub(4 )) nanoparticles were synthesized by chemical precipitation method. Thermodynamic stability of the alpha -Ag sub(2)WO sub(4) nanoparticles was studied by thermogravimetric and differential thermal analysis. These nanoparticles were structurally characterized by X-ray diffraction, Fourier transform infrared spectroscopy and Raman spectroscopy. The structure and morphology of these nanoparticles were studied by scanning electron microscopy and high-resolution transmission electron microscopy. The composition of nanoparticles near and at the surface was estimated by using energy-dispersive X-ray analysis. The optical properties of these nanoparticles were investigated by UV-Visible as well as photoluminescence spectroscopy. The effects of calcination temperature on the geometric parameters and optical properties of alpha -Ag sub(2)WO sub(4) nanoparticle samples was also investigated.
ISSN:0973-1458
0974-9845
DOI:10.1007/s12648-015-0664-1