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 with respect to temperature during phase transformation, and the complexated succinate ion with a Ca/P molar ratio of 1.560.02 is expected. XRD and SEM patterns were used to characterise the morphological observation of crystals. Since the HAP crystal system is hexagonal, the crystallite size in various (a,b,c) axes varies depending on the thickness of plate-shaped HAP crystals. The thickness of these produced crystals, which are perpendicular to the (100) plane and have a submicrometer thickness, is determined using Scherrer's equation D100 = K/(cos).
Author(S) Details
Shiv Prakash Mishra
Faculty of Science (Chemistry) Dr. Rammanohar Lohia Avadh University, Ayodhya-224001, (U.P.), India.
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