Chemical synthesis, structural characterization and optical properties of nanophase α-Ag2WO4

被引：32
作者：
Sreedevi, A. [1 ]
Priyanka, K. P. [2 ]
Babitha, K. K. [2 ]
Sabu, N. Aloysius [2 ]
Anu, T. S. [3 ]
Varghese, T. [2 ]
机构：
[1] Thejus Engn Coll, Dept Appl Sci & Humanities, Trichur 680584, Kerala, India
[2] Nirmala Coll, Nanosci Res Ctr NSRC, Dept Phys, Muvattupuzha 686661, Kerala, India
[3] MG Univ, Sch Chem Sci, Kottayam 686560, Kerala, India
来源：
INDIAN JOURNAL OF PHYSICS | 2015年 / 89卷 / 09期
关键词：
Chemical precipitation; Silver tungstate; Band gap; Photoluminescence; LEAD TUNGSTATE; AG FILAMENTS; SILVER; SCHEELITE; EMISSION; SPECTRA;
D O I：
10.1007/s12648-015-0664-1
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Silver tungstate (alpha-Ag2WO4) nanoparticles were synthesized by chemical precipitation method. Thermodynamic stability of the alpha-Ag2WO4 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-Ag2WO4 nanoparticle samples was also investigated.
引用
收藏
页码：889 / 897
页数：9
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