Preparation of aluminum oxide-hybridized hydroxyapatite powder by the sol-gel method

Eiji Fujii, Koji Kawabata, Hideyuki Yoshimatsu, Kanji Tsuru, Satoshi Hayakawa, Akiyoshi Osaka

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2 Citations (Scopus)


Hydroxyapatite powders (HAp; Ca10(PO4) 6(OH)2) hybridized with 0-5 mass % Al2O 3 were prepared from calcium hydroxide and di-aminonium hydrogenphosphate by a wet chemical synthesis. Ethylacetoacetate Aluminum Diisopropoxide (Al(OC3H7)2(C6H 9O3)) was used as a source for aluminum oxide. The obtained powders were characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) specific surface area measurement, and magic angle spinning-nuclear magnetic resonance spectroscopy (MAS-NMR). The X-ray diffraction patterns showed no Al2O3-peaks irrespective of Al2O3 content, suggesting that the Al2O 3-hybridized HAp powders were single phase. The Al2O 3-hybridized HAp powder had larger specific surface area. According to MAS-NMR analysis, it was considered that the aluminum element existed as aluminum oxide, it was not substituted for the Ca2+, PO 43-, or OH- ions.

Original languageEnglish
Pages (from-to)241-244
Number of pages4
JournalJournal of the Ceramic Society of Japan
Issue number1315
Publication statusPublished - Mar 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • General Chemistry
  • Condensed Matter Physics
  • Materials Chemistry


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