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Khademinia, S., Behzad, M., Alemi, A., Dolatyari, M. (2015). Low Temperature Hydrothermal Synthesis and Characterization and Optical Properties of Sr5Nb4O15 – Nb2O5 Nanocomposite. International Journal of Bio-Inorganic Hybrid Nanomaterials, 4(1), 49-54.
Sh. Khademinia; M. Behzad; A. Alemi; M. Dolatyari. "Low Temperature Hydrothermal Synthesis and Characterization and Optical Properties of Sr5Nb4O15 – Nb2O5 Nanocomposite". International Journal of Bio-Inorganic Hybrid Nanomaterials, 4, 1, 2015, 49-54.
Khademinia, S., Behzad, M., Alemi, A., Dolatyari, M. (2015). 'Low Temperature Hydrothermal Synthesis and Characterization and Optical Properties of Sr5Nb4O15 – Nb2O5 Nanocomposite', International Journal of Bio-Inorganic Hybrid Nanomaterials, 4(1), pp. 49-54.
Khademinia, S., Behzad, M., Alemi, A., Dolatyari, M. Low Temperature Hydrothermal Synthesis and Characterization and Optical Properties of Sr5Nb4O15 – Nb2O5 Nanocomposite. International Journal of Bio-Inorganic Hybrid Nanomaterials, 2015; 4(1): 49-54.

Low Temperature Hydrothermal Synthesis and Characterization and Optical Properties of Sr5Nb4O15 – Nb2O5 Nanocomposite

Article 8, Volume 4, Issue 1, Spring 2015, Page 49-54  XML PDF (1.17 MB)
Document Type: Research Paper
Authors
Sh. Khademinia1; M. Behzad email 1; A. Alemi2; M. Dolatyari3
1Department of Chemistry, Semnan University, Semnan 35351-19111, Iran
2Department of Inorganic Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
3Laboratory of Nano Photonics & Nano Crystals, School of Engineering Emerging Technologies, University of Tabriz, Tabriz, Iran
Abstract
Sr5Nb4O15 – Nb2O5 nanocomposites were synthesized in 2 and 4 M KOH aqueous solutions, via a non-stoichiometric 1:2 Sr:Nb molar ratio hydrothermal method at 160°C for 48 h (S1 and S2, respectively). Sr(NO3)2 and Nb2O5 were used as raw materials. The synthesized nanomaterials were characterized by powder X-Ray diffraction (PXRD) technique. It was found that Sr5Nb4O15 has been crystallized in hexagonal crystal structure with space group P-3m1. Nb2O5 lattice parameters were also found as a= 6.175 Å, b= 29.175 Å, and c= 3.93 Å and a= 12.73 Å, b= 5.56 Å, and c= 4.88 Å with γ= 105.1°, respectively for the orthorhombic and monoclinic crystal structures. The morphologies of the synthesized materials were studied by field emission scanning electron microscope (FESEM). The FESEM images showed that the S1 and S2 nanocomposites had flower and plate like structures, respectively. Ultraviolet–Visible (UV-Vis) spectra analyses showed that the synthesized nanocomposites had strong light absorption properties in the ultraviolet light region. FTIR spectra of the obtained nanomaterials were also studied. Cell parameter refinements of the synthesized nanocomposites were also investigated.
Keywords
Sr5Nb4O15; Hydrothermal method; PXRD; Nanocomposite; Optical property; Celref
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