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Composition Of Calcium Deficient Na-containing Carbonate Hydroxyapatite Modified With Cu(ii) And Zn(ii) Ions

机译:Cu(ii)和Zn(ii)离子修饰的缺钙含碳酸钠碳酸盐羟基磷灰石的组成

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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.
机译:本文通过ICP,XPS和FTIR研究了用Cu(II)和Zn(II)离子改性的缺钙含Na碳酸钠羟基磷灰石(NaCHA)的组成。所得结果表明,NaCHA在离子交换介质中更易溶,导致更多金属离子的结合。 ICP和XPS分析表明,表面上Zn〜(2+)的富集程度大于Cu〜(2+)的富集程度。此外,Cu〜(2+)离子取代了Ca〜(2+)和Na〜+离子,并进入NaCHA晶格中的空位和/或六角形通道。以上结果表明,用Cu〜(2+)和Zn〜(2+)改性的NaCHA表现出主要的溶解-沉淀或共沉淀机理,同时也可能存在吸附和扩散机理。

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