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Ass. Lect. Basma Abd El kader Ahmed Osman :: Publications:

Title:
Enhanced structural and spectroscopic properties of phosphosilicate nanostructures by doping with Al2O3 ions and calcinations temperature
Authors: Mohamed M.ElOkr, F.Metawe, Amany M El-Nahrawy,Basma A. A. Osman
Year: 2016
Keywords: Sol gel processes, phosphosilicate glass, aluminophosphosilicate nanoparticles, XRD, FTIR
Journal: International Journal of ChemTech Research
Volume: 9
Issue: 0974-4290
Pages: 228-234
Publisher: Not Available
Local/International: International
Paper Link:
Full paper Basma Abd El kader Ahmed Osman_(228-234)V9N5CT.pdf
Supplementary materials Not Available
Abstract:

In the present work, Al2O3doped (80 P 2O5: 20 SiO2 ) nanostructures were successfully prepared using a sol–gel process using triethyphosphate and tetraethylorthosilicate. We investigated the phase structure, microstructure and spectroscopic properties. Three different solutions were prepared by changing Al/P molar ratios such as 0, 10 and 15 in acidic condition. The obtained gel were aged at room temperature and dried at 100°C forming xerogel and subsequently calcined at different temperatures from 100 up to 700 o C for 3h in air. The obtained oxides were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The micro-structural observations demonstrated that Al 2O3 content improved surface morphology of the nanostructure phosphosilicate. X-ray diffraction and FT-IR showed that the addition of Al 2O3 caused the formation of phosphosilicate network as P–O–Si, and formation of mixed phases based on P–O–Si–O–Al and P–O–Al separated from the phosphate matrix

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