Synthesis of nano-sized β-tricalcium phosphate via wet precipitation

Nano-size β-tricalcium phosphate powders with average grain size of 50 nm were prepared by the wet chemical precipitation method with calcium nitrate and diammonium hydrogen phosphate as calcium and phosphorus precursors, respectively. The pH of the system was maintained at 8 and 10.8 by adding of sodium hydroxide. Filtered cake was dried at 80°C and calcined at 700°C. The dried and calcined powders were characterized using X-ray diffractrometry (XRD), Fourier transform infrared spectroscopy (FTIR), inductively coupled plasma atomic emission spectroscopy (ICPAES) and scanning electron microscopy (SEM).