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    STUDIA CHEMIA - Ediţia nr.4 din 2013  
         
  Articol:   INFLUENCE OF THE CITRIC ACID ON THE CERIUM SUBSTITUTED HYDROXYAPATITE MORPHOLOGY.

Autori:  . 		 
       
         
  Rezumat:   In the present study the obtaining of the simple and substituted hydroxyapatite with cerium ions (Ce4+ ) in presence of citric acid was studied. The hydroxyapatite samples were prepared by wet coprecipitation method. The structural properties of hydroxyapatite powders were characterized by scanning electron microscopy (SEM) coupled with X-ray analysis (EDX), X-ray powder diffraction (XRD) and Fourier Transform Infrared spectroscopy (FTIR). Like organic modifier, the citric acid has an influence on the morphology and particle size of hydroxyapatite as shown by XRD and SEM-EDX analysis. The results obtained indicated that cerium ions were incorporated into hydroxyapatite structure and the presence of citric acid was useful on the average crystallite size reduction of the samples obtained.

Keywords: hydroxyapatite, citric acid, cerium
 
         
     
         
         
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