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SOL–GEL DERIVED PHOSPHOSILICATE AND ALUMINOPHOSPHOSILICATE GELS AT LOWER TEMPERATURE
International Journal of Advancement in Engineering, Technology and Computer Sciences • 2016
Publication Information
Authors
Mohamed M. ElOkr, Fatma Metawe, Amany M ElNahrawy, Basma A. A. Osman
Keywords
Phosphosilicate gel, Aluminophosphosilicate gel, Sol gel process,Low temperature, Structure
Journal
International Journal of Advancement in Engineering, Technology and Computer Sciences
Publisher
Not Available
Volume
3
Issue
1
Pages
1-5
publication.type
International
Paper Link
Open Link
Supplementary Materials
Not Available
Abstract
A sol–gel process for producing phosphosilicate (80 P2O5- 20 SiO2) and aluminophosphosilicate (70 P2O5- 20 SiO2-10 Al
2O3) gels at lower temperatures derived from triethyphosphate (TEP), tetraethoxysilane (TEOS) and aluminum nitrate has been developed. The structural and chemical characteristics of the
nanostructures were investigated by X-ray diffraction (XRD),scanning electron microscopy (SEM) and Fourier
Transform Infrared Spectroscopy (FTIR). Formation of P -O-Si, P -O-P, Si-O-Si, Al-O-Si and P -O-Al bonds was observed from FTIR spectra for the prepared samples after a heat treatment at 300 o C. The XRD results show that the crystallinity degree increases with increasing the calcination temperature and Al2O3ions.
2O3) gels at lower temperatures derived from triethyphosphate (TEP), tetraethoxysilane (TEOS) and aluminum nitrate has been developed. The structural and chemical characteristics of the
nanostructures were investigated by X-ray diffraction (XRD),scanning electron microscopy (SEM) and Fourier
Transform Infrared Spectroscopy (FTIR). Formation of P -O-Si, P -O-P, Si-O-Si, Al-O-Si and P -O-Al bonds was observed from FTIR spectra for the prepared samples after a heat treatment at 300 o C. The XRD results show that the crystallinity degree increases with increasing the calcination temperature and Al2O3ions.