Abstract

Novesar Jamarun^*, Zefri Azharman, Zilfa and Upita Septiani

DOI : http://dx.doi.org/10.13005/ojc/320437

Hydroxyapatite (HAP) nano-powder was synthesized in a used precipitation reaction, in which calcium nitrate 4-hydrate [Ca(NO₃)_2.4H₂O] and diammonium hydrogen phosphate [(NH₄)₂HPO₄] were used as precursors and ammonia was used as the agent for PH adjustment. Hydroxyapatite powder has been studied at different firing temperature i.e 600, 700, 800, and 900^oC to achieve high degree of crystallinity and purity. The synthesized samples were characterized by Fourier Transform Infra-red Spectroscopy (FT-IR), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDS) techniques. The result shows  that, high purity of nano-hydroxyapatite powders can be obtained at 600^oC, and the crystallinity and Magnification showformed rod of nano-sized grain.

Firing; Hydroxyapatite; Precipitation; Heat Treatment

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