Elaboration and Characterization of Phosphosilicates Apatites Containing Lanthanum

Authors

  • Khaled Boughzala Unité de Recherche Analyses et Procédés Appliqués à l’environnement, Institut Supérieur des Sciences Appliquées et Technologie de Mahdia, 5121 Mahdia, Tunisia and Unit Electrochemistry, Materials and Environment, University of Kairouan, 3100, Kairouan, Tunisia.
  • Mustapha Hidouri High Institute of Applied Sciences and Technology, Omar Ibn Khattab Road, 6032, Gabes, Tunisia.

DOI:

https://doi.org/10.9734/bpi/rtcams/v7/2581C

Keywords:

Strontium-britholite, DRX, IR, raman spectroscopy, NMR spectroscopy

Abstract

Two series of strontium–lanthanum apatites, Sr10-xLax(PO4)6-x(SiO4)xF2 and Sr10-xLax(PO4)6-x(SiO4)xO with  0 \(\leq\) x \(\leq\) 6, were  synthesized by solid state reaction in the temperature range of 1200–1400°C. The obtained materials were characterized by X-ray diffraction, NMR spectroscopy and infrared and Raman measurements were performed to investigate the crystal structure and vibrational active modes.

Pure solid solutions were obtained within a limited range of unsubstituted phosphate and silicate apatites. A variation of the lattice parameters was observed, with an increase of a and a decrease of c parameters, related to the radius of the corresponding substituted ions.

The bands of Infrared and Raman spectra were assigned to the vibration modes of PO4 and SiO4 groups. The comparison of the results of 29Si MAS NMR analysis with those obtained with the 31P, suggested that both species occupied the same crystallographic sites.

Published

2022-03-07

How to Cite

Khaled Boughzala, & Mustapha Hidouri. (2022). Elaboration and Characterization of Phosphosilicates Apatites Containing Lanthanum. Recent Trends in Chemical and Material Sciences Vol. 7, 1–15. https://doi.org/10.9734/bpi/rtcams/v7/2581C

Issue

Recent Trends in Chemical and Material Sciences Vol. 7

Section

Chapters