Chemical characterization of hydroxyapatite obtained by wet chemistry in the presence of V, Co, and Cu ions.
Chemical characterization of hydroxyapatite obtained by wet chemistry in the presence of V, Co, and Cu ions.
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在 V、Co 和 Cu 离子存在下通过湿化学法获得的羟基磷灰石的化学表征
DOI：
10.1016/j.msec.2012.12.075
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
U. Gbureck
中科院分区：
文献类型：
--
作者：
C. Moseke;M. Gelinsky;J. Groll;U. Gbureck
一个模型系统的沉淀羟基磷灰石（HA）从饱和溶液中在碱性pH值被用来调查的V，Co，和Cu离子的晶体学和化学计量的产生磷灰石的影响。利用X射线衍射仪（XRD）分析了不同金属离子浓度和不同烧结温度下所得粉末的物相组成和结晶度。该程序使用的温度依赖性的相变和分解的磷酸钙，以分析的特定影响的金属离子对磷灰石矿化。比较XRD测量结果表明，所有金属离子物种降低所产生的磷灰石的结晶度和微晶尺寸。此外，XRD图谱中α-TCP峰的形成以及FTIR光谱中OH伸缩振动强度的降低，部分抑制了无定形磷酸钙（ACP）向HA的转化。与化学计量的HA相比，热诱导的β-TCP的形成表明显著降低的Ca/P比。随着金属离子含量的增加，这种效果更加明显。此外，金属氧化物的外观样品加热到更高的温度下的XRD图谱表明，在沉淀的磷灰石中的金属离子的掺入。峰位移表明，磷灰石相和β-TCP相都明显掺入了金属离子。
A model system for the precipitation of hydroxyapatite (HA) from saturated solutions at basic pH was utilized to investigate the effects of V, Co, and Cu ions on crystallography and stoichiometry of the produced apatites. X-ray diffraction (XRD) was applied to analyze phase composition and crystallinity of powders obtained with different metal ion concentrations and annealed at different sintering temperatures. This procedure used the temperature-dependent phase transitions and decompositions of calcium phosphates to analyze the particular influences of the metal ions on apatite mineralization. Comparative XRD measurements showed that all metal ion species reduced crystallinity and crystallite size of the produced apatites. Furthermore the transformation of amorphous calcium phosphate (ACP) to HA was partially inhibited, as was deduced from the formation of α-tricalcium phosphate (α-TCP) peaks in XRD patterns of the heated powders as well as from the reduced intensity of the OH stretch vibration in FTIR spectra. The thermally induced formation of β-TCP indicated a significantly reduced Ca/P ratio as compared to stoichiometric HA. This effect was more pronounced with rising metal ion content. In addition, the appearance of metal oxides in the XRD patterns of samples heated to higher temperatures indicated the incorporation of metal ions in the precipitated apatites. Peak shifts showed that both the apatitic as well as the β-TCP phase apparently had incorporated metal ions.
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影响因子：
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作者：
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通讯作者：
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DOI：
10.1016/s0928-4931(02)00108-x
发表时间：
2002-10-01
期刊：
MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS
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DOI：
10.1002/jbm.820231305
发表时间：
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期刊：
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影响因子：
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作者：
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通讯作者：
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DOI：
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发表时间：
2000
期刊：
影响因子：
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作者：
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