Synthesis and characterization of cadmium-calcium hydroxyapatite solid solutions
Synthesis and characterization of cadmium-calcium hydroxyapatite solid solutions作者机构:College of Light Industry and Food Engineering Guangxi University College of Environmental Science and Engineering Guilin University of Technology
出 版 物:《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报(英文版))
年 卷 期:2014年第21卷第6期
页 面:604-608页
核心收录:
学科分类:081702[工学-化学工艺] 0709[理学-地质学] 0819[工学-矿业工程] 0806[工学-冶金工程] 08[工学] 0817[工学-化学工程与技术] 0708[理学-地球物理学] 0805[工学-材料科学与工程(可授工学、理学学位)] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学(可授工学、理学学位)] 0702[理学-物理学]
基 金:financially supported by the National Natural Science Foundation of China(No.41263009) the Guangxi Science and Technology Development Project(No.GuiKeZhong 1298002-3) the National Natural Science Foundation of Guangxi of China(No.2012GXNSFDA053022)
主 题:hydroxyapatite solid solutions cadmium calcium substitution
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.