Sol-gel synthesis and TEM-EDX characterisation of hydroxyapatite nanoscale powders modified by Mg, Sr or Ti

Abstract

Chemically modified hydroxyapatite nanoparticles have been prepared by a sol-gel route. Analysis by TEM-EDX confirmed that the dopants, Mg, Sr or Ti had been incorporated into the product. However each sample displayed variability in the level of dopant incorporation in different particles within the same sample. Particle sizes were ≤ 100 nm for samples modified by Mg or Ti. Doping with Sr produced an elongated particle morphology, with dimensions ∼ 200nm × 50 nm. © 2010 IOP Publishing Ltd.