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Published in: Journal of Materials Science 2/2015

01-01-2015 | Original Paper

Synthesis and characterisation of nanostructured silica-powellite-HAP composites

Authors: O. Ponta, R. Ciceo-Lucacel, A. Vulpoi, T. Radu, V. Simon, S. Simon

Published in: Journal of Materials Science | Issue 2/2015

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Abstract

Well-defined calcium molybdate (CaMoO4) and hydroxyapatite (HAP) nanocrystals were developed by thermal treatment on the surface of a SiO2–CaO–P2O5–MoO3 amorphous precursor synthesised at room-temperature by sol–gel route. The structural and morphological characterisaions were performed by several techniques: energy dispersive X-ray spectroscopy, thermal analyses (DTA/TGA), X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy, electron paramagnetic resonance. Complementary, Fourier transform infrared and Raman spectroscopies provided a clear picture regarding the short range order structure, emphasising beside the CaMoO4 phase development, the presence of HAP nanocrystals. The vibrational spectroscopic techniques proved to be valuable tools for evidencing very small HAP nanocrystallites that cannot be clearly observed by XRD and TEM analyses.

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Metadata
Title
Synthesis and characterisation of nanostructured silica-powellite-HAP composites
Authors
O. Ponta
R. Ciceo-Lucacel
A. Vulpoi
T. Radu
V. Simon
S. Simon
Publication date
01-01-2015
Publisher
Springer US
Published in
Journal of Materials Science / Issue 2/2015
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-014-8615-3

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