Atomic environment in sol-gel derived nanocrystalline hydroxyapatite

作者：Simon V^*; Lazar D; Turcu R V F; Mocuta H; Magyari K; Prinz M; Neumann M; Simon S

来源：Materials Science and Engineering B-Solid State Materials for Advanced Technology, 2009, 165(3): 247-251.

DOI：10.1016/j.mseb.2009.06.010

• Hydroxyapatite
• Sol-get
• Heat treatment
• Atomic environment

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.

• 出版日期2009-12-15