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Olena SYCH, Oksana OTYCHENKO, Nataliia ULIANCHYCH, Tamara TOMILA, Oleksandr BYKOV, Liudmyla PROTSENKO, Olga BUDYLINA, Iryna UVAROVA, Volodymyr KOLOMIIETS, Mariia DEMYDA; Structure and adsorption activity of hydroxyapatite of different origin; Advanced Nano-Bio-Materials and Devices; 2018:2(3):287-293
The work is devoted to comparative investigation of the structure and adsorption properties of biogenic hydroxyapatite obtained by annealing cattle bones at 800 °С and two types of synthetic hydroxyapatite obtained by chemical precipitation followed by structuring with using carbon nanotubes for one of the powders and drying at 300°С. According to XRD and IR spectroscopy results, for all the studied powder, the presence of crystalline hydroxyapatite was proved. It was established that the morphology of particles and the specific surface area are different for different types of hydroxyapatite (synthetic hydroxyapatite are characterized by formation of a bigger number of large agglomerates in comparison with biogenic hydroxyapatite), whereas the adsorption activity does not depend on the hydroxyapatite origin and is equal to 106-108 mg/g. In the case of synthetic hydroxyapatite, it is provided by developed specific surface area (69.6-70.0 m2/g) of the powder, whereas in the case of biogenic hydroxyapatite, it is associated with a small size of most agglomerates.