http://www.cnr.it/ontology/cnr/individuo/prodotto/ID43441
Punctual investigation of surface sites of HA and Magnesium-HA (Articolo in rivista)
- Type
- Label
- Punctual investigation of surface sites of HA and Magnesium-HA (Articolo in rivista) (literal)
- Anno
- 2006-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.jeurceramsoc.2004.12.037 (literal)
- Alternative label
Luca Bertinetti, Anna Tampieri, Elena Landi, Gianmario Martra, Salvatore Coluccia (2006)
Punctual investigation of surface sites of HA and Magnesium-HA
in Journal of the European Ceramic Society
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Luca Bertinetti, Anna Tampieri, Elena Landi, Gianmario Martra, Salvatore Coluccia (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://www.sciencedirect.com/science/article/pii/S0955221905000658 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- ISTEC-CNR, Str. delle cacce 37, 10100 Torino, Italy
Dipartimento di Chimica IFM and NIS Centre of Excellence, Universit`a degli studi di Torino, V. Giuria 7, 10100 Torino, Italy
ISTEC-CNR, V. Granarolo 64, 38018 Faenza, Italy (literal)
- Titolo
- Punctual investigation of surface sites of HA and Magnesium-HA (literal)
- Abstract
- IR spectroscopy of adsorbed CO is used for the first time to characterize surface cationic centres of pure and magnesium doped hydroxyapatite (HA and MHA, respectively). In air, water molecules saturate the coordination sphere of exposed surface cations by a strong coordinative interaction. At first, the materials were outgassed at 300 °C in order to remove water molecules adsorbed on the surface. Following this treatment, surface sites able to adsorb CO are produced. The vibrational frequency of adsorbed CO is sensitive to the features of the adsorbing sites. The IR spectra of CO adsorbed on HA revealed the presence of surface Ca2+ ions differing for the degree of coordinative unsaturation and of P OH groups. On MHA, CO was able to monitor the presence of surface Mg2+ ions, the amount of which increased by aging the material in air. (literal)
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