State of Cu2+ ions in precipitated and thermally treated amorphous calcium-magnesium monophosphates doped with copper

被引：0
|
作者：
V. A. Sinyaev
E. S. Shustikova
L. V. Levchenko
G. A. Tokseitova
机构：
[1] Bekturov Institute of Chemical Sciences,
来源：
Russian Journal of General Chemistry | 2006年 / 76卷
关键词：
Hydroxyapatite; General Chemistry; Magnesium Phosphate; Dehydration Product; Orthophos;
D O I：
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中图分类号：
学科分类号：
摘要：
Dehydration products of precipitated amorphous calcium-magnesium monophosphates (orthophosphates) with the atomic ratio Mg/(Mg + Ca) of 0.3 doped with copper were studied by the UV and IR Fourier spectroscopy. The substances retain the amorphous nature even on heating up to 550–600°C. Cations Cu2+ in them are in an octahedral surrounding of oxygen atoms and are linked with PO43− groups and, possiblly, with CO32− anions. The OH groups characteristic of hydroxyapatite are not found in the structure. Above 600°C the phosphates crystallize, therewith copper passes in the composition forming crystalline phases, retaining the octahedral surrounding of Cu2+ ions.
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页码：1885 / 1889
页数：4
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