Synthesis and Characterization of Cobalt apatite totally and half substituted by Microwave Irradiation. Antibacterial activity

M. Abd- Elmottaleb, M. Abdelbaset, A. A. Gahlan, A. M. Hamed


The present paper investigates the preparation of hydroxyapatite and Cobalt (Co) apatite totally and half substituted through a chemical synthesis process. The synthesized powders were characterized by the following analytical techniques: X-ray diffraction (XRD), FT-IR and Scanning electron microscopy (SEM). We have successfully prepared nano-Hap particles with various shapes by controlling pH and preparation temperature in the precipitation method. The HAp prepared in various conditions. It illustrates that the pH value, preparation temperature and component ratio play an important role in controlling the shape of the synthesized particles. It is interesting that those parameters have insignificant effect on size of the particles. The peak profiles of the XRD patterns may indicate that the crystallinity of the particles varies with the pH value and temperature. For examples, the particles prepared over the pH-9 solution at 60°C have high crystallinity than the particles prepared below pH- 9 solution. XRD analyses results showed that the crystallinity increase with increase the component ratio of cobalt. The antibacterial activity of these complexes against Gram positive and Gram negative has also been studied.

Keywords: Hydroxyapatite; Cobalt. FTIR spectroscopy, X-ray diffraction(XRD), Scanning electron microscopy (SEM).

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