Hydroxyapatite (HA) and β-tricalcium phosphate (β-TCP) represent the main types of calcium phosphates used for the reconstruction of bone defects in maxillofacial, dental, orthopaedic and drug delivery applications. The bioactivity and bioresorbability of biphasic calcium phosphate (BCP) ceramics can be controlled by varying the HA/β-TCP ratio. In this reported work, BCP nanopowders were prepared by a simple sol–gel method, in which Ca(NO3)2 · 4H2O and P2O5 were used as precursors for calcium and phosphate, respectively. The different phase ratios of HA/β-TCP were obtained by changing the sintering temperature. X-ray diffraction, inductive coupled plasma-atomic emission spectroscopy, scanning electron microscopy, transmission electron microscopy and Fourier transformer infrared spectrophotometer results have shown that increasing the sintering temperature could cause more decomposition of …
