TY - JOUR
T1 - Characterization of Tb-doped hydroxyapatite for biomedical applications
T2 - optical properties and energy band gap determination
AU - Jiménez-Flores, Y.
AU - Suárez-Quezada, M.
AU - Rojas-Trigos, J. B.
AU - Lartundo-Rojas, L.
AU - Suárez, V.
AU - Mantilla, A.
N1 - Publisher Copyright:
© 2017, Springer Science+Business Media New York.
PY - 2017/9/1
Y1 - 2017/9/1
N2 - In the present work, the synthesis, by means of the sol–gel method, of calcium-deficient hydroxyapatite and Tb-doped calcium-deficient hydroxyapatite with dopant content of 10 and 12 wt% is reported. The synthesized samples exhibit diffraction patterns and structural characteristics consistent with those reported in the literature for synthetic hydroxyapatite. The results of the chemical characterization show that the synthesized samples are suitable for biomedical applications, and the incorporation of Tb3+ in the host structure occurs both substitutional and by dopant insertion in calcium vacancy sites. In addition, using spectroscopic techniques, the values of the valence band, optical band gap energies, and luminescent response were determined for all samples, concluding that the increase in dopant has the consequence of decreasing the value of the optical band gap, as it was expected; However, it is also observed that the maximum luminescent emission is obtained for the sample synthesized with 10 wt% of terbium.
AB - In the present work, the synthesis, by means of the sol–gel method, of calcium-deficient hydroxyapatite and Tb-doped calcium-deficient hydroxyapatite with dopant content of 10 and 12 wt% is reported. The synthesized samples exhibit diffraction patterns and structural characteristics consistent with those reported in the literature for synthetic hydroxyapatite. The results of the chemical characterization show that the synthesized samples are suitable for biomedical applications, and the incorporation of Tb3+ in the host structure occurs both substitutional and by dopant insertion in calcium vacancy sites. In addition, using spectroscopic techniques, the values of the valence band, optical band gap energies, and luminescent response were determined for all samples, concluding that the increase in dopant has the consequence of decreasing the value of the optical band gap, as it was expected; However, it is also observed that the maximum luminescent emission is obtained for the sample synthesized with 10 wt% of terbium.
UR - http://www.scopus.com/inward/record.url?scp=85019624166&partnerID=8YFLogxK
U2 - 10.1007/s10853-017-1201-8
DO - 10.1007/s10853-017-1201-8
M3 - Artículo
SN - 0022-2461
VL - 52
SP - 9990
EP - 10000
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 17
ER -