Solid state NMR highlights local structures of OXO-anions in hydroxyapatite lattice

A. Osaka, S. Hayakawa, K. Tsuru, T. Kanaya, E. Fujii, K. Kawabata, G. Gasqueres, C. Bonhomme, F. Babonneau, C. Jäger

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Carbonate- and Si-involving hydroxyapatite (C-HA, Si-HA) as well as hydroxyapatite (HAp) was prepared through wet chemical processes. Magic angle Spinning (MAS) NMR spectroscopy was applied together with Cross-Polarization (CP) techniques to study chemical environments around the guest oxo-anions. C-HA involved at least four carbonate sites, but the one for ∼168 ppm was left unassigned. In Si-HA, only Q0 (SiO44-) replaced the phosphate ion site but other Si atoms were polymerized and present on the surface or in the grain boundary of the Si-HA particles. The 31P MAS and CP-MAS spectra indicated the absence of HPO42- in the lattice, and suggested the presence of an amorphous phosphate phase on the particle surface.

Original languageEnglish
Title of host publicationA Global Road Map for Ceramic Materials and Technologies: Forecasting the Future of Ceramics, International Ceramic Federation - 2nd International Congress on Ceramics, ICC 2008, Final Programme
Publication statusPublished - 2008
Externally publishedYes
Event2nd International Congress on Ceramics, ICC 2008 - Verona, Italy
Duration: Jun 29 2008Jul 4 2008

Other

Other2nd International Congress on Ceramics, ICC 2008
CountryItaly
CityVerona
Period6/29/087/4/08

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

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    Osaka, A., Hayakawa, S., Tsuru, K., Kanaya, T., Fujii, E., Kawabata, K., Gasqueres, G., Bonhomme, C., Babonneau, F., & Jäger, C. (2008). Solid state NMR highlights local structures of OXO-anions in hydroxyapatite lattice. In A Global Road Map for Ceramic Materials and Technologies: Forecasting the Future of Ceramics, International Ceramic Federation - 2nd International Congress on Ceramics, ICC 2008, Final Programme