Selective formation of hydroxyapatite layers on titanium dioxide

Selective formation of hydroxyapatite layers on titanium dioxide Influence exerted by the structure of layers of titanium dioxide produced by chemical vapor deposition on its ability to form hydroxyapatite in Dulbecco’s phosphate-salt buffer solution was studied. The results obtained demonstrated that the surface phase composition of TiO2 determines the morphology of the mineral layer formed on its surface. The polycrystalline titanium dioxide with random orientation of anatase crystallites is the most favorable for intense nucleation and formation of homogeneous hydroxyapatite layers composed of densely packed grains with diameter of 3.0 ± 0.5 μm in Dulbecco’s solution. Textured TiO2 layers with smooth surface also resulted in that hydroxyapatite was formed. In this case, it was composed of separate coarse grains 8.0 ± 2.0 μm in size. It is the most probable that the nucleation of this mineral on the surface of titanium dioxide layers occurs by the epitaxial growth mechanism. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Selective formation of hydroxyapatite layers on titanium dioxide

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Publisher
Pleiades Publishing
Copyright
Copyright © 2014 by Pleiades Publishing, Ltd.
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S1070427214110032
Publisher site
See Article on Publisher Site

Abstract

Influence exerted by the structure of layers of titanium dioxide produced by chemical vapor deposition on its ability to form hydroxyapatite in Dulbecco’s phosphate-salt buffer solution was studied. The results obtained demonstrated that the surface phase composition of TiO2 determines the morphology of the mineral layer formed on its surface. The polycrystalline titanium dioxide with random orientation of anatase crystallites is the most favorable for intense nucleation and formation of homogeneous hydroxyapatite layers composed of densely packed grains with diameter of 3.0 ± 0.5 μm in Dulbecco’s solution. Textured TiO2 layers with smooth surface also resulted in that hydroxyapatite was formed. In this case, it was composed of separate coarse grains 8.0 ± 2.0 μm in size. It is the most probable that the nucleation of this mineral on the surface of titanium dioxide layers occurs by the epitaxial growth mechanism.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Mar 3, 2015

References

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