synthesis of sodium lanthanum lead chloride apatite structure at high temperatures

The studied solid-state reaction method was synthesized and characterized by pb (8-x) na2lax (po4)6clx compounds with x ranging between 0.0 and 2.0. the synthesis process involved calcination at 830 °c for 60 hours. xrd (x-ray diffraction) analysis performed using a bruker d8 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-7800f fesem with inca pentafetx3 (oxford instruments, england) showed semi-quantitative results that closely match theoretical values. in addition, high-quality morphological structures were obtained. originpro 2023 software was used to process the data for this investigation, while phase identification was performed using match! version 3.12 software with pdf-2 and pdf-4 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.