Composition of calcium deficient Na-containing carbonate hydroxyapatite modified with Cu(II) and Zn(II) ions
✍ Scribed by Jidong Li; Yubao Li; Li Zhang; Yi Zuo
- Book ID
- 104002221
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 399 KB
- Volume
- 254
- Category
- Article
- ISSN
- 0169-4332
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✦ Synopsis
In this paper, the compositions of calcium deficient Na-containing carbonate hydroxyapatite (NaCHA) modified with Cu(II) and Zn(II) ions was studied by means of ICP, XPS and FTIR. The obtained results indicate that NaCHA is more soluble in ion-exchange medium, resulting in the incorporation of more metal ions. The ICP and XPS analyses indicate that the enrichment of Zn 2+ is more than that of Cu 2+ on the surface. Moreover, Cu 2+ ions have substituted for Ca 2+ and Na + ions and also enter into the vacancy and/or the hexagonal channels in NaCHA lattice. The above results indicate that NaCHA modified with Cu 2+ and Zn 2+ displays a predominant dissolution-precipitation or coprecipitation mechanism and at the same time, adsorption and diffusion mechanism maybe also exist.