SYNTHESIS AND CHARACTERIZATION OF HYDROXYAPATITE UNDER INFLUENCE OF ULTRAVIOLET RADIATION AND ULTRASONIC EXPOSURE

Hydroxyapatite has a wide range of possible applications in biomedicine, optics and electronics, sensors, catalysis and in environmental decontamination. The present study focused on the synthesis of hydroxyapatite by the wet precipitation method. The influence of drying time on the properties of synthesized material was investigated. The particle size increases from 80 to 200 µm by increasing the drying time from 24 hours to 96 hours. The morphology and properties of hydroxyapatite powders obtained under the action of the ultraviolet radiation and ultrasonic exposure acting together and individually was studied. The obtained samples were analyzed using X‐ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscope, Brunauer–Emmett–Teller methods. The results showed that the properties of the obtained hydroxyapatite powders were highly dependent on the synthesis conditions. Ultrasonic treatment at the synthesis stage led to a decrease in the size of the resulting hydroxyapatite particles to 4 µm. The use of ultraviolet radiation at the stabilization stage led to an increase in the content of hydroxyapatite in the reaction products.