Mechanochemical-hydrothermal synthesis of calcium phosphate powders with coupled magnesium and carbonate substitution

Wojciech L. Suchanek, Kullaiah Byrappa, Pavel Shuk, Richard Riman, Victor F. Janas, Kevor S. Tenhuisen

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Abstract

Magnesium- and carbonate-substituted calcium phosphate powders (Mg-, CO3-CaP) with various crystallinity levels were prepared at room temperature via a heterogeneous reaction between MgCO3/Ca(OH) 2 powders and an (NH4)2HPO4 solution using the mechanochemical-hydrothermal route. X-ray diffraction, infrared spectroscopy, and thermogravimetric analysis were performed. It was determined that the powders containing both Mg2+ and CO 32- ions were incorporated uniformly into an amorphous calcium phosphate phase while in contrast, the as-prepared powder free of these dopants was crystalline phase-pure, stoichiometric hydroxyapatite. Dynamic light scattering revealed that the average particle size of the room temperature Mg-, CO3-CaP powders was in the range of 482nm-700nm with a specific surface area between 53 and 91m2/g. Scanning electron microscopy confirmed that the Mg-, CO3-CaP powders consisted of agglomerates of equiaxed, ≈20-35nm crystals.

Original languageEnglish (US)
Pages (from-to)793-799
Number of pages7
JournalJournal of Solid State Chemistry
Volume177
Issue number3
DOIs
Publication statusPublished - Mar 1 2004

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Keywords

  • Calcium phosphate
  • Hydrothermal Synthesis
  • Hydroxyapatite
  • Magnesium
  • Mechanochemical synthesis
  • Nanoparticle

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