Synthesis and Evaluation of Amorphous Calcium Phosphate (ACP) by Various Synthesis Methods
Amorphous calcium phosphate (ACP) was prepared by a sol-gel method from Ca alkoxide synthesized with Ca metal and ethanol in N2 atmosphere. As-prepared products by sol-gel method were spherical ACP particles of approximately 3 to 10 nm in diameter before heat-treatments. The results from Ca-K edge of as-synthesized ACP showed only one peak around 0.2 nm, suggesting the presence of the first neighbor of Ca in Ca-PO4 cluster.
Takashi Nakamura, Kimihiro Yamashita and Masashi Neo
M. Ohta et al., "Synthesis and Evaluation of Amorphous Calcium Phosphate (ACP) by Various Synthesis Methods ", Key Engineering Materials, Vols. 309-311, pp. 175-178, 2006