Synthesis and crystallization of macroporous hydroxyapatite
Synthesis and crystallization of macroporous hydroxyapatite
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DOI：
10.1016/j.jssc.2005.06.039
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发表时间：
2005-09-01
影响因子：
3.3
通讯作者：
White, TJ
中科院分区：
文献类型：
--
作者：
Madhavi, S;Ferraris, C;White, TJ
大孔羟基磷灰石Ca-10（PO 4）（6）（OH）（2）是使用有序的聚苯乙烯球模板合成的，该模板用磷酸钙前体溶液浸渍，使其固化，然后在流动的氧气中从500至1000 ℃烧结以除去聚合物并使磷酸盐结晶。使用衍射和成像的组合，显示面心立方大孔骨架具有0.8-0.9 μ m的孔径，并且由羟基磷灰石（80-98重量%）和X射线衍射无定形材料（14-55%）组成，比例取决于热处理的持续时间和温度。在较低的烧结温度下，HAp缺钙。钙离子交换镉证明了这种材料的危险废物补救的潜力。(c)2005年爱思唯尔公司All rights reserved.
Macroporous hydroxyapatite Ca-10(PO4)(6)(OH)(2) was synthesized using ordered polystyrene sphere templates that were impregnated with a calcium phosphate precursor solution which was allowed to solidify followed by sintering from 500 to 1000 degrees C in flowing oxygen to remove the polymer and crystallize the phosphates. Using a combination of diffraction and imaging the face-centered cubic macroporous framework was shown to have pore diameters of 0.8-0.9 mu m and to be composed of hydroxyapatite (80-98 wt%) and X-ray diffraction amorphous material (14-55%), the proportions dependent on the duration and temperature of heat treatment. At lower sintering temperatures the HAp is calcium deficient. Ion exchange of calcium by cadmium demonstrated the potential of this material for hazardous waste remediation. (c) 2005 Elsevier Inc. All rights reserved.