Sodium and silver ionic competition for conjugated octacalcium phosphate sites in weak basic solutions

Octacalcium phosphate (OCP) has attracted the interest of researchers looking for new biomaterials due to its excellent biocompatibility and high formability. Furthermore, it was an attraction medical combination products that ions molecule doping ability OCP, which originated distinct crystal structure. Then, as antibacterial bone substitute, Ag-substituted OCP (OCP-Ag) a candidate centerpiece. However, OCP-Ag block fabrication, drawback Ag contents blocks were significantly reduced compared powder when they fabricated in same concentration solutions. It still unclear role Na, important matter structure substitution into unit lattice. Thus, this study, we analyzed Na process during fabrication presence Both cations improved OCP’s layer structure, even though both co-exist. As solutions increased, samples decreased until threshold values achieved. According ionic species analysis, PO4 ion complexes showed no tendency toward other cation concentrations. Spectroscopic investigation substituted conjugated site P5 PO4, resulting competition same.