Preparation and structure of carbonated calcium hydroxyapatite substituted with heavy rare earth ions
Preparation and structure of carbonated calcium hydroxyapatite substituted with heavy rare earth ions
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DOI：
10.1016/j.materresbull.2012.01.018
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发表时间：
2012-05
影响因子：
5.4
通讯作者：
A. Yasukawa;K. Kandori;Hidekazu Tanaka;K. Gotoh
中科院分区：
文献类型：
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作者：
A. Yasukawa;K. Kandori;Hidekazu Tanaka;K. Gotoh
采用沉淀法合成了取代5种重稀土离子（Ln：Y3+，Gd 3+，Dy 3+，Er 3+和Yb 3+）的羟基磷灰石（CaHap）颗粒，并对其进行了表征。这些稀土离子对产物的晶相和结构有很大的影响。随着起始溶液中Ln/（Ln+Ca）（[XLn]）的增大，颗粒的长度和结晶度先增大后减小。当[XY]≤0.10时可代替Y体系，当[XLn] ≤ 0.01-0.03时可代替其它Ln体系，得到稀土金属-钙羟基磷灰石（LnCaHap）固溶体颗粒。LnPO 4与LnCaHap在较高的[XLn]下混合用于所有Ln系统。采用XRD、TEM、ICP-AES、IR和TG-DTA等方法对[XY]=0 ~ 0.10的钇钙羟基磷灰石（YCaHap）固溶体进行了详细的研究。
Calcium hydroxyapatite (CaHap) particles substituted five types of heavy rare earth ions (Ln: Y3+, Gd3+, Dy3+, Er3+and Yb3+) were synthesized using a precipitation method and characterized using various means. These Ln ions strongly affected the crystal phases and the structures of the products. With increasing Ln/(Ln+Ca) in the starting solution ([XLn]), the length and the crystallinity of the particles first increased and then decreased. The rare earth metal-calcium hydroxyapatite (LnCaHap) solid solution particles were obtained at [XY]≤0.10 for substituting Y system and at [XLn]≤0.01–0.03 for substituting the other Ln systems. LnPO4was mixed with LnCaHap at higher [XLn] for all Ln systems. A series of yttrium-calcium hydroxyapatite (YCaHap) solid solutions with [XY]=0–0.10 were investigated using XRD, TEM, ICP-AES, IR and TG–DTA in detail.