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BET and XRD studies on the hydroxyapatite and europium doped hydroxyapatite

C.S. CIOBANU1,2, E. ANDRONESCU1, D. PREDOI2,*

Affiliation

  1. University POLITEHNICA of Bucharest, Faculty of Applied Chemistry and Materials Science, Department of Science and Engineering of Oxide Materials and Nanomaterials, 1-7 Polizu Street, P.O. Box 12-134,
  2. National Institute for Physics of Materials, P.O. Box MG 07, Bucharest, Magurele, Romania,

Abstract

Europium doped hydroxyapatite (Eu:HAp) nanocristalline powders was synthesized by co-precipitation method by setting the atomic ratio of Eu/[Eu + Ca] at 0% and 2% and [Ca+Eu] /P at 1.67. The structural properties were characterized by Xray diffraction (XRD). Nitrogen adsorption–desorption isotherms were obtained on different samples using BET method. The X-ray diffraction analysis revealed that hydroxyapatite is the unique crystalline constituent of all the samples, indicating that Eu has been successfully inserted into the HAp lattice. Based on N2 adsorption–desorption isotherms investigation, the pore size, surface area and pore volume of europium doped hydroxyapatite are 16.57 nm, 115.06 m2 /g and 0.48 cm3 /g..

Keywords

Hydroxyapatite, Europium, porosity, BET method.

Submitted at: June 27, 2011
Accepted at: July 25, 2011

Citation

C.S. CIOBANU, E. ANDRONESCU, D. PREDOI, BET and XRD studies on the hydroxyapatite and europium doped hydroxyapatite, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 7, pp. 821-824 (2011)