Substitution of Hydrogen Phosphate (HPO42-) Ions of OCP Hydrated Layers by Dicarboxylate Ions in Hexagonal HAP Nanocrystallites| Chapter 13 | New Innovations in Chemistry and Biochemistry Vol.7

OCP (octacalcium phosphate) crystals are apatite-based crystals with hydrated layers that are utilised to make needle or plate-shaped HAP (hydroxyapatite) nanocrystals in apatite chemistry. The crystals are made through a dissolution precipitation process. These reactions resulted in hexagonal HAP nanocrystals

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Transformation of Organo-Modified Thin Plate-Shaped OCP to Laminated Hexagonal HAP Nanocrystals

Under hydrothermal conditions at 180°C for 3 hours, laminated hexagonal thin plate-shaped hydroxyapatite (HAP) nanocrystals are generated from organically salt of dicarboxylic acid (e.g. succinic acid) based plate-shaped octacalcium phosphate (OCP). The pH of the solution is adjusted to 5.5

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