Characterization of nano HAP product

The FTIR spectrum of the nano hydroxylapatite product is shown in Fig. 16.6. On the spectrum, 3570 cm-1 and 632 cm-1 are the absorption peaks reflecting the expandingcontracting and winding vibrations of OH , respectively, suggesting that the oxhydryls do exist in the synthesized molecules 566 cm 1, 604 cm 1, 959 cm 1030 cm 1 and 1094 cm 1 are the typical absorption peaks of phosphoric acid radical. Somewhat unexpected peaks are those at 1420 cm 1 and 1470 cm 1, which are the typical 

The XRD spectrum of the nano hydroxylapatite product is given in Fig. 16.7 and, for understanding in detail, the corresponding diffraction data are listed in Table 16.5, where the data of the referential sample [231] are also given for comparison. From the data listed in Table 16.5 it is verified that, chemically, the product synthesized is hydroxylapatite. 

Data of XRD spectrums of the synthesized nano hydroxylapatite product and the referential 

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