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

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 proceeding › Conference 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 (SiO₄^4-) 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 HPO₄^2- in the lattice, and suggested the presence of an amorphous phosphate phase on the particle surface.

Original language	English
Title of host publication	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
Publication status	Published - 2008
Externally published	Yes
Event	2nd International Congress on Ceramics, ICC 2008 - Verona, Italy Duration: Jun 29 2008 → Jul 4 2008

Other

Other	2nd International Congress on Ceramics, ICC 2008
Country/Territory	Italy
City	Verona
Period	6/29/08 → 7/4/08

All Science Journal Classification (ASJC) codes

Ceramics and Composites

Cite this

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

Solid state NMR highlights local structures of OXO-anions in hydroxyapatite lattice. / Osaka, A.; Hayakawa, S.; Tsuru, K. et al.

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. 2008.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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. 2nd International Congress on Ceramics, ICC 2008, Verona, Italy, 6/29/08.

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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.",

author = "A. Osaka and S. Hayakawa and K. Tsuru and T. Kanaya and E. Fujii and K. Kawabata and G. Gasqueres and C. Bonhomme and F. Babonneau and C. J{\"a}ger",

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T1 - Solid state NMR highlights local structures of OXO-anions in hydroxyapatite lattice

AU - Osaka, A.

AU - Hayakawa, S.

AU - Tsuru, K.

AU - Kanaya, T.

AU - Fujii, E.

AU - Kawabata, K.

AU - Gasqueres, G.

AU - Bonhomme, C.

AU - Babonneau, F.

AU - Jäger, C.

PY - 2008

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N2 - 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.

AB - 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.

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BT - 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

T2 - 2nd International Congress on Ceramics, ICC 2008

Y2 - 29 June 2008 through 4 July 2008

ER -

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

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