title: Synthesis and characterization of Ce-substituted hydroxyapatite by sol-gel method.
abstract: Both undoped hydroxyapatite (HAp) and three Ce-substituted HAp samples with variable amounts (from 0.5 to 2 at.%) of Ce were synthesized by sol-gel method. The samples were studied by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) spectroscopy to determine the crystallite size, crystallinity degree, phases, functional groups, morphology and elemental composition. In all samples, the amount of HAp exceeded 92%, while the amount of admixture β-TCP was always below 8% and no changes were observed by addition of Ce. The crystallinity degree of the samples was always within 84-89%, while the calculated dimensions of crystallites appeared to be within 26-35nm. The microstructure and elemental composition of all the samples were found to be affected by the addition of Ce.
authors: Department of Physics, Faculty of Science, Firat University, 23119 Elazig, Turkey. Electronic address: okaygili@firat.edu.tr.
authors: Omer
authors: O
authors: Kaygili
authors: Kudrinskaja sq. 1-155, Moscow 123242, Russia. Electronic address: sedorozhkin@yandex.ru.
authors: Sergey V
authors: SV
authors: Dorozhkin
authors: Department of Chemistry, Faculty of Science, Firat University, 23119 Elazig, Turkey. Electronic address: skeser@firat.edu.tr.
authors: Serhat
authors: S
authors: Keser
mesh_terms: D002516:Ceramics; D002563:Cerium / Q000737:chemistry*; D017886:Durapatite / Q000737:chemistry*; D044367:Phase Transition; D013057:Spectrum Analysis; D014961:X-Ray Diffraction
chemical_list: D002563:Cerium; D017886:Durapatite
keywords: Bioceramics; Cerium substitution; Hydroxyapatite; Sol–gel method