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Effect of pH on the precipitation of hydroxyapatite on silica gels

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Materials Research Innovations

Abstract.

Silica-HAp composites have been produced with particle size ranging from several nm to few μm, through control of the pH of the solution, which also controls morphology. A calcium ions reservoir has been made available as a Ca/EDTA soluble complex allowing the production of HAp at low temperature and short periods of time (hours). The presence of silica seems to promote the formation of HAp under these conditions.

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Acknowledgements.

One of us (A.S.) acknowledges the financial support obtained from ICTP via CLAF-M for research visits to Mexico We also acknowledge the financial support from ANUIES-CSUCA for scientific visits to Mexico (A.S. and M.M.) and to Costa Rica (V.C.). and CONACYT through project 32605-U. We are also thankful to L. Carapia, P. Salas, E. Méndez and T. Falcon.

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Authors and Affiliations

  1. Centro de Física Aplicada y Tecnología Avanzada, UNAM, A.P. 1-1010 Querétaro, Querétaro 76000 México

    Victor M. Castaño

  2. Posgrado, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México; Escuela de Física, Universidad de Costa Rica, San José, Costa Rica

    Alejandro Sáenz

  3. Centro de Investigación en Ciencia e Ingeniería de Materiales, Universidad de Costa Rica, San José, Costa Rica

    Alejandro Sáenz & Mavis L. Montero

  4. Escuela de Química, Universidad de Costa Rica, San José, Costa Rica

    Mavis L. Montero

  5. Instituto Nacional de Investigaciones Nucleares, Amsterdam 46-202, Hipódromo Condesa, 06100 México D.F., México

    Gilberto Mondragón

  6. Instituto de Física, Benemérita Universidad Autónoma de Puebla, Apartado Postal J-48, Puebla 72570, México

    Ventura Rodríguez-Lugo

Authors
  1. Alejandro Sáenz
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  2. Mavis L. Montero
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  3. Gilberto Mondragón
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  4. Ventura Rodríguez-Lugo
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  5. Victor M. Castaño
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Corresponding author

Correspondence to Victor M. Castaño.

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Sáenz, A., Montero, M.L., Mondragón, G. et al. Effect of pH on the precipitation of hydroxyapatite on silica gels. Mat Res Innovat 7, 68–73 (2003). https://doi.org/10.1007/s10019-003-0230-x

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  • DOI: https://doi.org/10.1007/s10019-003-0230-x

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