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Synthesis and characterization of nano-hydroxyapatite added with magnesium obtained by wet chemical precipitation
Progress in Natural Science: Materials International ( IF 4.7 ) Pub Date : 2021-06-25 , DOI: 10.1016/j.pnsc.2021.06.006
Brandon A. Correa-Piña , Omar M. Gomez-Vazquez , Sandra M. Londoño-Restrepo , Luis F. Zubieta-Otero , Beatriz M. Millan-Malo , Mario E. Rodriguez-García

Biogenic hydroxyapatites from mammalian bones naturally contain traces of ions, like Mg, which play a vital role in the bone remodeling process. In this way, synthetic hydroxyapatites should include this kind of mineral. In this work, hydroxyapatite added with Mg was synthesized by wet precipitation using (NH4)H2PO4, Ca(NO3)2.4H2O, and Mg(NO3)2.6H2O (0, 0.032, 0.061, and 0.123 ​M). Inductively coupled plasma and X-ray diffraction evidenced the Mg inclusion in the hydroxyapatite lattice in the same levels reported for natural hydroxyapatites. The calcination at 600 ​°C was performed to remove the reaction by-products, but it also gave rise to physicochemical changes as the coalescence and crystals recrystallization. It produced, in turn, an improvement in the crystalline quality, according to Raman analysis. Despite those physicochemical changes, all the samples remained nanometric according to scanning electron microscopy imaging.



中文翻译:

湿法化学沉淀法制备加镁纳米羟基磷灰石的合成与表征

来自哺乳动物骨骼的生物羟基磷灰石天然含有微量离子,如镁,在骨骼重塑过程中起着至关重要的作用。这样,合成的羟基磷灰石就应该包含这种矿物。在这项工作中,添加了 Mg 的羟基磷灰石是通过使用 (NH 4 )H 2 PO 4、Ca(NO 3 ) 2 .4H 2 O 和 Mg(NO 3 ) 2 .6H 2 的湿法沉淀合成的。O(0、0.032、0.061 和 0.123 M)。电感耦合等离子体和 X 射线衍射证明了羟基磷灰石晶格中的 Mg 含量与天然羟基磷灰石报告的水平相同。在600℃下进行煅烧以去除反应副产物,但随着聚结和晶体重结晶,它也引起了物理化学变化。根据拉曼分析,它反过来又提高了晶体质量。尽管发生了这些物理化学变化,但根据扫描电子显微镜成像,所有样品都保持纳米级。

更新日期:2021-06-25
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