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Structural Properties of Hydroxyapatite With Particle Size Less Than 10 Nanometers
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Effect of Precipitation Method on Stoichiometry and Morphology of Hydroxyapatite Nanoparticles
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Remineralization Potential of Sports Drink Containing Nano-Sized Hydroxyapatite
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Influence of Different Hydroxyapatite Particles on the Behavior of Highly Malignant Melanoma Cells
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Effect of Precipitation Method on Stoichiometry and Morphology of Hydroxyapatite Nanoparticles

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Abstract:

This paper reports synthesis of hydroxyapatite nanoparticles by three precipitation methods. Homogeneous aqueous solution of Ca(NO3)2 and H3PO4 was used as precursor solution, and NH3•H2O was precipitator. Calcium deficient hydroxyapatite nanorods were obtained by adding the precipitator into precursor solution, near stoichiometric hydroxyapatite nanoparticles were derived from adding precursor solution into the precipitator, and smaller hydroxyapatite nanoparticles were prepared by adding precipitator and precursor solution simultaneously into a reaction vessel. The stoichiometry of hydroxyapatite was mainly affected by pH at precipitation reaction process. The crystal size and shape of hydroxyapatite particles was related to Ostwald ripening. The stoichiometry and morphology of hydroxyapatite nanoparticles can be controllable by selecting suitable coprecipitation process.

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Periodical:

Key Engineering Materials (Volumes 330-332)

Pages:

271-274

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.330-332.271

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Online since:

February 2007

Authors:

He Bin Shi, Hong Zhong, Yu Liu, Jin Yan Gu, Chang Sheng Yang

Keywords:

Hydroxyapatite Nanoparticle, Morpholoy, Precipitation Method, Stoichiometry

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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