Facile, Alternative Synthesis of Spherical-Like Ca(H<sub>2</sub>PO<sub>4</sub>)<sub>2•</sub>H<sub>2</sub>O Nanoparticle by Aqueous-Methanol Media

Spherical-like calcium dihydrogenphosphate monohydrate (Ca (H 2 PO 4 ) 2 H 2 O) nanostructure was successfully prepared by the mixing of calcium carbonate and phosphoric in aqueous-methanol media at ambient temperature for 30 min. Three thermal decomposition step and higher stability at over 800 °C of the prepared sample are different from the earlier works. Spherical-like Ca (H 2 PO 4 ) 2 H 2 O nanostructure with diameter < 100 nm confirmed by SEM may be important for potential applications. This method of synthesis by aqueous-methanol media is a fast and simple method and it is expected to be applicable for the synthesis of other nanocrystalline calcium phosphates.