Nano-size beta calcium pyrophosphate(β-Ca2P2O7) powders with average grain size of 80 nm were prepared by sol gel method with calcium nitrate 4-hydrateCa(NO3)2 • 4H2O and different amount of diammonium hydrogen phosphate (NH4)2HPO4(0.4 and 0.6 molar) as calcium and phosphorus precursors. The pH of the system was maintained up to (pH = 10) by the adding of sodium hydroxide. The white precipitate stirred for 2 hour and washed with distilled water and filtered. Filtered cake was dried at 80 oC and calcined at 600 oC. The dried and calcined powders were characterized for phase composition using X-ray diffractrometry (XRD) and Fourier transform-infrared spectroscopy (FTIR). The particle size and morphology was studied using scanning electron microscopy (SEM).

Keywords: biomaterial,nano powder, β-pyro calcium phosphate, Sol gel, FTIR spectroscopy.