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Zinc incorporation into hydroxylapatite

Paper ID Volume ID Publish Year Pages File Format Full-Text
10081 663 2009 9 PDF Available
Title
Zinc incorporation into hydroxylapatite
Abstract

By theoretical modeling and X-ray absorption spectroscopy, the local coordination structure of Zn incorporated into hydroxylapatite was examined. Density function theory (DFT) calculations show that Zn favors the Ca2 site over the Ca1 site, and favors tetrahedral coordination. X-ray absorption near edge structure (XANES) spectroscopy results suggest one dominant coordination environment for the incorporated Zn, and no evidence was observed for other Zn-containing phases. Extended X-ray absorption fine structure (EXAFS) fitting of the synthetic samples confirms that Zn occurs in tetrahedral coordination, with two P shells at ∼2.85–3.07 Å, and two higher Ca shells at ∼3.71–4.02 Å. These fit results are consistent with the most favored DFT model for Zn substitution in the Ca2 site.

Keywords
Hydroxylapatite; Apatite; Bone; Zinc; Density function theory; X-ray absorption spectroscopy
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Zinc incorporation into hydroxylapatite
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 30, Issue 15, May 2009, Pages 2864–2872
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
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