Title of the paper: 

Nanohydroxyapatite synthesized from calcium oxide and its characterization

Authors:  

Sumit Pramanik and Kamal K. Kar 

University/Institute: 

Advanced Nanoengineering Materials Laboratory, Materials Science Programme, Indian Institute of Technology Kanpur, Kanpur 208016, UP, India

 

Abstracts:

Spherical and nano-sized hydroxyapatite (HAp) was synthesized from calcium oxide by a continuous rapid precipitation method without using any secondary route. The maximum particles have a size around 10 nm according to X-ray diffraction (XRD), 35 nm based on scanning electron microscopy (SEM) and 15 nm according to transmission electron microscopy (TEM) studies. The sintering effects on structural properties of HAp were studied by XRD, Fourier transformation infrared (FTIR), 31P solidstate nuclear magnetic resonance (NMR) and Raman spectroscopy. The particle size varied from 5 to 70 nm and nanopores from 10 to 450 nm were revealed by SEM and transmission electron microscopy TEM. This result was also strongly supported by XRD study. The combined effect of heating and centrifuging force exerted by vigorous magnetic stirring causes the dispersion of tiny crystals followed by precipitation to form spherical shaped particles. The chemical structure of HAp was established by FTIR, NMR and Raman spectroscopy. 

 

Links to the paper (link to the journal webpage):

http://download.springer.com/static/pdf/764/art%253A10.1007%252Fs00170-012-4401-z.pdf?auth66=1381391234_0836dcb2e68f17fa2cf93f87d2376b59&ext=.pdf

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