Magnesium Substitution in Hydroxyapatite Synthesized by Sol-Gel Method

Abstract

The ionic substitutions have been proposed as a tool to improve the biological performance of hydroxyapatite (HAp) based materials. In the present work, the systems of Ca(10-x)Mgx(PO4)6(OH)2 (MgHAp, x = 0, 1, 2, and 3) were successfully synthesized by solgel method. To obtain nanocrystalline of MgHAp, the prepared precursors were calcined in air at 600 °C for 2 h. The samples were characterized by Xray diffraction (XRD) and transmission electron microscope (TEM) observation. The XRD results confirm the formation of pure phase of HAp with the lattice parameter a in the range of 0.94170.9479 nm and c of 0.68410.6919 nm. The crystallite sizes of the powder are found to be 3546 nm as evaluated by the XRD line broadening method. The morphology of the samples are spherical shape of diameter less than 100 nm as evaluated by TEM. The corresponding selected area electron diffraction (SAED) analysis further confirms the formation of hexagonal structure of HAp.

Effect of DC Plasma Electrolytic Oxidation on Surface Characteristics and Corrosion Resistance of Zirconium

“…HA is the key representative of this group [ 18 ]. There were many attempts of functionalization of this material with other elements, most notably with magnesium and strontium [ 19 , 20 , 21 , 22 ]. For instance, Mg 2+ as a divalent ion can substitute calcium ions in HA, and it is an important bioelement from the point of view of bone growth [ 19 ].…”