Synthesis and characterization of cadmium-calcium hydroxyapatite solid solutions

被引：0
作者：
Xin Zhao
Yi-nian Zhu
Liu-qin Dai
机构：
[1] Guangxi University,College of Light Industry and Food Engineering
[2] Guilin University of Technology,College of Environmental Science and Engineering
来源：
International Journal of Minerals, Metallurgy, and Materials | 2014年 / 21卷
关键词：
hydroxyapatite; solid solutions; cadmium; calcium; substitution;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A series of cadmium-calcium hydroxyapatite solid solutions was prepared by an aqueous precipitation method. By various means, the characterizations confirmed the formation of continuous solid solutions over all ranges of Cd/(Cd+Ca) atomic ratio. In the results, both lattice parameters a and c display slight deviations from Vegard’s rule when the Cd/(Cd+Ca) atomic ratio is greater than 0.6. The particles change from smaller acicular to larger hexagonal columnar crystals as the Cd/(Cd+Ca) atomic ratio increases from 0–0.60 to 0.60–1.00. The area of the phosphate peak for symmetric P-O stretching decreases with the increase in Cd/(Cd+Ca) atomic ratio, and the peak disappears when the Cd/(Cd+Ca) atomic ratio is greater than 0.6; the two phosphate peaks of P-O stretching gradually merge together for the Cd/(Cd+Ca) atomic ratio near 0.60. These variations can be explained by a slight tendency of larger Cd ions to occupy M(2) sites and smaller Ca ions to prefer M(1) sites in the structure.
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页码：604 / 608
页数：4
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