Abstract
The in-vitro biomineralization of Eu/Li–borate glasses containing Sm 2O 3 was investigated by immersion in simulated body fluid (SBF) up to 72 h. Back scattering scanning electron microscope supplemented with EDX was used to follow the development of the phosphatic layer post 72 h SBF immersion. Biochemical analyses of calcium and inorganic phosphorus (Ca 2+ and iP) ions were conducted using relevant biochemical kits and spectrophotometer. Spectra of TF-X-ray analyses and Fourier transform infrared were obtained for the samples post 72 h immersion and compared to the host one. The role of Sm 2O 3 in the biomineralization and crystallinity of the (ELB) borate glasses is proved by the developed rounded nano particles and the presence of elemental Eu and Sm in the formed layer beside Ca and P as presented by EDX. The continuous reduced values of ionic iP accompanying the adsorption and release of Ca ions in SBF with time assured the biolayer formation. The formed phosphatic layer presented shifted XRD peaks due to ionic incorporations especially of Sm 3+. FT-IR proved the selectivity of BO 3 group for phosphatic deposition. Deconvolution of ν 4 and ν 3 regions, for carbonates and phosphates, respectively, proved the enhanced peak areas with increased Sm 3+ content.
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