Atomic environment in sol-gel derived nanocrystalline hydroxyapatite

Autor(en): Simon, V.
Lazar, D.
Turcu, R. V. F.
Mocuta, H.
Magyari, K.
Prinz, M.
Neumann, M.
Simon, S.
Stichwörter: Atomic environment; BIOMEDICAL APPLICATIONS; BISMUTHATE GLASSES; CALCIUM-PHOSPHATE; COATINGS; FLUORIDATED HYDROXYAPATITE; Heat treatment; Hydroxyapatite; Materials Science; Materials Science, Multidisciplinary; Physics; Physics, Condensed Matter; Sol-get; SURFACES; SYSTEM; TITANIUM; VANADATE APATITE; XPS
Erscheinungsdatum: 2009
Herausgeber: ELSEVIER SCIENCE BV
Journal: MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
Volumen: 165
Ausgabe: 3
Startseite: 247
Seitenende: 251
Zusammenfassung: 
Hydroxyapatite prepared by sol-gel route was investigated with respect to local structure changes induced by heat treatment. The X-ray diffraction analysis revealed the presence of nanocrystalline hydroxyapatite with significantly broadened reflections for the sample dried at 110 degrees C as compared with the samples heat treated at 900 degrees C and 1150 degrees C. Line broadenings for the nanocrystalline sample are evidenced also in the X-ray photoelectron spectroscopy and nuclear magnetic resonance spectra. By heat treatment at high temperatures the atomic environment is modified both around cations and oxygen. A higher bioactivity is expected from the nanocrystalline sample than from the high temperature heated samples with large sized crystals. (c) 2009 Elsevier B.V. All rights reserved.
Beschreibung: 
5th International Workshop on Nanosciences and Nanotechnologies, Thessaloniki, GREECE, JUL 14-16, 2008
ISSN: 09215107
DOI: 10.1016/j.mseb.2009.06.010

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