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Calcium and phosphate adsorption as initial steps of apatite nucleation on sol‐gel‐prepared titania surface
Author(s) -
Coreño Juan,
Martínez Antonia,
Coreño Oscar,
Bolarín Ana,
Sánchez Félix
Publication year - 2002
Publication title -
journal of biomedical materials research part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.849
H-Index - 150
eISSN - 1552-4965
pISSN - 1549-3296
DOI - 10.1002/jbm.a.10395
Subject(s) - apatite , materials science , adsorption , nucleation , calcium , phosphate , chemical engineering , zeta potential , sol gel , inorganic chemistry , mineralogy , nuclear chemistry , nanotechnology , metallurgy , organic chemistry , chemistry , nanoparticle , engineering
Titania powders have been prepared by the sol‐gel route from Ti (IV) ethoxide under acidic conditions. Adsorption experiments of calcium and phosphate ions on gel‐derived titania suspensions were performed to suggest a likely initial step of apatite growth on its surface. Experiments were performed as a function of time and pH at 37°C with and without NaCl present in the suspensions. Also, zeta (ζ) potential experiments were performed to determine the kind of calcium adsorption. Results suggest that, apparently, calcium and phosphate adsorption can act as two different initial steps for apatite growth. © 2002 Wiley Periodicals, Inc. J Biomed Mater Res 64A: 131–137, 2003