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- Title
Synthesis of Magnesium- and Silicon-modified Hydroxyapatites by Microwave-Assisted Method.
- Authors
Rasskazova, Liudmila A.; Zhuk, Ilya V.; Korotchenko, Natalia M.; Brichkov, Anton S.; Chen, Yu-Wen; Paukshtis, Evgeniy A.; Ivanov, Vladimir K.; Kurzina, Irina A.; Kozik, Vladimir V.
- Abstract
Nanopowders of hydroxyapatite (HA), modified by magnesium (MgHA) and by silicon (SiHA) were obtained by liquid-phase microwave synthesis method. X-ray diffraction and IR spectroscopy results showed that Mg2+ and SiO44− ions were present in the synthesized products both as secondary phases and as part of the HA phase. Whitlockite was found in the magnesium-modified HA (MgHA) and larnite was found in the silicon-modified HA (SiHA); ion substitution for both materials resulted in solid solutions. In the synthesized samples of modified HA, the increase of particle size of powders was in the order HA < SiHA < MgHA, which was calculated through data specific surface area and measured pycnometric density of the powders. The Lewis acid sites (Ca2+, Mg2+, Si4+) were present using spectral probes on the surface of the samples of HA, MgHA, and SiHA, and the acidity of these sites decreased in the order SiHA > MgHA > HA. The rates of calcium phosphate layer deposition on the surface of these materials at 37 °C in the model simulated body fluid solution showed similar dependence.
- Subjects
MAGNESIUM; HYDROXYAPATITE synthesis; MICROWAVES; SILICON; X-ray diffraction; LEWIS acids
- Publication
Scientific Reports, 2019, Vol 9, Issue 1, pN.PAG
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/s41598-019-50777-x