Synthesis of Sodium Lanthanum Lead Chloride Apatite Structure at High Temperatures

The studied solid-state reaction method was synthesized and characterized by Pb (۸-x) Na۲Lax (PO۴)۶Clx compounds with x ranging between ۰.۰ and ۲.۰. The synthesis process involved calcination at ۸۳۰ °C for ۶۰ hours. XRD (X-ray diffraction) analysis performed using a Bruker D۸ Advance Difractometer with Cu Kα radiation showed that the apatite-type structure was preserved in all compositions. At the same time, peak position shifts indicated the substitution of La³⁺ ions and expansion of the unit cell. Energy dispersive spectroscopy (EDS) performed using a JEOL JSM-۷۸۰۰F FESEM with INCA PentaFETx۳ (Oxford Instruments, England) showed semi-quantitative results that closely match theoretical values. In addition, high-quality morphological structures were obtained. OriginPro ۲۰۲۳ software was used to process the data for this investigation, while phase identification was performed using Match! version ۳.۱۲ software with PDF-۲ and PDF-۴ databases. These data indicate the great potential of the investigated materials for catalytic and electrochemical applications and expand the understanding of the effects of La substitution in apatite-type structures.

کلیدواژه ها:

X-ray diffraction ، Lead ، apatite ، Sodium ، Lanthanum ، Solid Solution