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Thermoanalytical and structural characterization of fluoridated calcium phosphates prepared in anhydrous alcohols

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Abstract

A thermoanalytical, morphological, and structural study of fluoridated calcium phosphates that were prepared by different variants of a synthesis in anhydrous alcohols is reported. The obtained materials were neither fully amorphous nor single-phased crystalline, and their nature considerably depended on the synthesis conditions. In all cases, the retention of significant amounts of solvent in the solid product was observed. A complete removal of the solvent was only possible by heating to temperatures above ~573–673 K which resulted in variations in the elemental composition, phase changes, and an increase of the crystallinity. Consequently, this synthesis in anhydrous alcohols is not a viable route to obtain materials with a defined crystallinity and stoichiometry.

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Acknowledgements

This work was supported by Fundação para a Ciência e a Tecnologia (FCT, Portugal) and the CRUP (Portugal; A-31/09)/DAAD (Germany) bilateral exchange program. PhD and Post Doctoral grants from FCT are also gratefully acknowledged by R.G.S. (SFRH/BD/48410/2008) and A.L.C.L. (SFRH/BPD/35053/2007), respectively.

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Authors and Affiliations

  1. Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1649-016, Lisboa, Portugal

    Ricardo G. Simões, Ana I. Aleixo, Ana L. C. Lagoa, Manuel E. Minas da Piedade & João P. Leal

  2. Unidade de Ciências Químicas e Radiofarmacêuticas, Instituto Tecnológico e Nuclear, 2686-953, Sacavém, Portugal

    João P. Leal

  3. Inorganic Chemistry and Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Universitätsstrasse 5-7, 45117, Essen, Germany

    Thorsten Peitsch & Matthias Epple

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  1. Ricardo G. Simões
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  2. Ana I. Aleixo
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  4. Manuel E. Minas da Piedade
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Correspondence to Manuel E. Minas da Piedade.

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Simões, R.G., Aleixo, A.I., Lagoa, A.L.C. et al. Thermoanalytical and structural characterization of fluoridated calcium phosphates prepared in anhydrous alcohols. J Therm Anal Calorim 100, 509–517 (2010). https://doi.org/10.1007/s10973-009-0654-7

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  • DOI: https://doi.org/10.1007/s10973-009-0654-7

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