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The present work reports a simple coprecipitation adapted method for the   synthesis of stable Ce substituted to Ca hydroxyapatite (HAp) nanoparticles.   The structural and morphological properties of Ce doped hydroxyapatite   (Ce:HAp) were characterized by X-ray diffraction (XRD), Transmission   Electron Microscopy (TEM), Scanning Electron Microscopy (SEM) and Energy   Dispersive X-ray analysis (EDAX). The optical properties of Ce doped   hydroxyapatite were also investigated using Fourier Transform Infrared   (FTIR) spectroscopy, FT Raman spectroscopy and photoluminescence analysis.   The results of the XRD studies revealed the progressive increase in the a-   and c-axes with increasing of Ce concentrations. In the FTIR studies of   Ce:HAp powders a similar structure to hydroxyapatite was observed. IR and   Raman wavenumbers and the peak strength of the bands associated to the P-O   and O-H bonds decreases progressively with the increase of Ce concentration.   All the emission maxima could be attributed to the 5d-4f transitions of Ce   ions. The displacement of maximum emission bands with the increase of Cerium   in the samples is in agreement with the results obtained by XRD studies. The   Ce:HAp samples with xCe =0.03 and 0.05 exhibited significant antibacterial   activity against Staphylococcus aureus ATCC 6538 and E. coli 714 bacterial   strains compared to Ce:HAp samples with xCe =0 (pure HAp) and 0.01

Cerium doped hydroxyapatite nanoparticles synthesized by coprecipitation method