TY - GEN
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 - 2008/12/1
Y1 - 2008/12/1
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.
UR - http://www.scopus.com/inward/record.url?scp=84872127885&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84872127885&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84872127885
SN - 9788880800842
T3 - 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
BT - A Global Road Map for Ceramic Materials and Technologies
T2 - 2nd International Congress on Ceramics, ICC 2008
Y2 - 29 June 2008 through 4 July 2008
ER -