Effect of Ti ion substitution on the structure of hydroxylapatite

Synthesis and mechanical behavior of β-tricalcium phosphate/titania composites addressed to regeneration of long bone segments

“…This phenomenon can generate the formation of open pores during thermal consolidation as previously reported by Ruys et al (1995). Such effect was observed also by Ergun (2008) in a study on the sintering of titanium-substituted hydroxyapatite. From Table 1 and according to Eq.…”

Synthesis and characterization of bioactive hydroxyapatite–calcite nanocomposite for biomedical applications

“…Therefore, the prepared hydroxyapatite nanopowders exhibited B-type carbonated apatite structure, resembling that of human bone apatite. Celaletdin Ergun reported that the strength of band observed at 628 cm À1 due to O-H stretching shows the degree of crystallinity [21]. The strength of this band observed for samples prepared at 60°C (B and D) were higher than that of the samples prepared at RT (A and C).…”

“…The phase composition of synthesized samples was determined by the following equation [21] RC i ¼ IðhklÞ i P IðhklÞ i where i and I(hkl) i refer to the phase of interest and intensity of the characteristic peaks of the corresponding phase, respectively, in the XRD pattern. RI(hkl) i is the total intensity of the characteristic peaks of the phases appeared in the XRD pattern.…”

Comparison of Hydrothermal and Sol-Gel Synthesis of Nano-Particulate Hydroxyapatite by Characterisation at the Bulk and Particle Level

“…For the hydrothermal method [14,16] 4 , Fisher Scientific, analytical reagent grade) (6.603 g) were prepared using distilled water (50 mL), and subsequently diluted further to create 0.10 M solutions. A precipitate was formed by the drop-wise addition of the di-ammonium hydrogen phosphate solution (30 mL) to the calcium nitrate tetrahydrate solution (50 mL), with continuous stirring, to obtain a Ca/P ratio of 1.67 in the mixed solution.…”

“…Synthetic HA nano-particles can be produced by a number of techniques and excellent biocompatibility makes it of interest for use in a wide range of biomedical applications [3][4][5]. These include tissue scaffolds [6,7], tubule infiltration in dentine [8,9], implant coatings [10] and as matrices for controlled drug release [11].…”