Raman, FT-IR and XRD study of bovine bone mineral and carbonated apatites with different carbonate levels

Synthesis and Optimization of Colloidal Hydroxyapatite Nanoparticles by Hydrothermal Processes

“…8,42 In addition to the phosphate bands, two bands appeared at 1193 and 868 cm -1 , which can be assigned to the OH in-plane bending and P-(OH) stretching modes of HPO 4 2-groups in the structure, respectively. 30 The presence of base backbone moieties of phosphate and hydroxyl groups along with calcium confirmed the complete synthesis of HA due to the presence of the band at 632 and 3570 cm 43 attributed the narrow band around 3600 cm -1 to O-H stretching in the HA crystalline structure.…”

The solid-state proton NMR study of bone using a dipolar filter: apatite hydroxyl contentversusanimal age

“…This latter aspect is still studied and debated, because the ionic and water lling of the crystal channels containing apatite hydroxyl ions is crucial for the bone mineral structure and its properties. [15][16][17] It is known that the OH À concentration in the apatite crystals decreases with increase of the carbonate content caused by A-type (CO 3 2À for OH À ) and/or B-type (CO 3 2À for PO 4 3À ) substitution, [18][19][20][21] and with the decreasing size of apatite nanocrystals 4,15,22,23 and with increasing disorder in their crystal lattice. 4,15 Maturation of bone apatite, which is a chemical, thermodynamically driven process, 24 increases the apatite OH À content.…”

Raman Spectroscopy Study of Phosphorites Combined with PCA-HCA and OPLS-DA Models

“…Raman spectroscopy is a powerful, fast, and nondestructive experimental technique, which has been extensively applied not only in basic scientific researches, but also for practical applications. It can provide physical, chemical, and structural characteristics of investigated samples [11][12][13][14][15][16][17][18][19][20][21][22][23][24]. In the past decade, Raman spectroscopy has been applied for quantitative and qualitative studies of various types of minerals.…”

“…Elgharbi et al [21] found the structure and composition of the Tunisian phosphorite after calcination at different temperatures. Wang et al [22] analyzed the structural changes of synthetic carbonate apatite and natural bone minerals. These studies suggested that Raman spectroscopy is a promising method for the tremendous research efforts of phosphorite.…”