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
Subtitle of host publicationForecasting the Future of Ceramics, International Ceramic Federation - 2nd International Congress on Ceramics, ICC 2008, Final Programme
Publication statusPublished - Dec 1 2008
Event2nd International Congress on Ceramics, ICC 2008 - Verona, Italy
Duration: Jun 29 2008Jul 4 2008

Publication series

NameA 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

Other

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

ASJC Scopus subject areas

  • Ceramics and Composites

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