Amalgamation of nano hydroxyapatite bioceramics for electrical and optical studies

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Calcium phosphate minerals (HAp) are the key component of human bones and teeth. The HAp nanorods can perform a good biocompatibility and bioactivity. In this work, HAp powders are synthesized via a simple route by hydrothermal treatment. The resultant HAp samples are rod-like crystalline, where the morphological and particle dimensions can be customized by changing the pH conditions. The prepared HAp powder samples confirmation results are discussed using FT-IR, scanning electron microscopy, XRD, and impedance spectroscopy. FT-IR investigation confirmed that the occurrence of phosphate, carbonate and water molecules for all the samples and the transmittance decreases with pH. The acidic, base and alkaline nature of the synthesised samples are analysed using XRD studies. It results as the pH increases, significant reduction in crystallites size of HAp occurs. The average crystalline size of HAp nanorod is maximum (43.089 nm) for pH4. The SEM images of the synthesized HAp samples obtained, displays nanorods with excellent uniformity which depends on pH value. The particle diameter is estimated in the range of 10 nm to 45 nm. Electrical conductivity and dielectric function are studied using impedance spectroscopy. It can be massively helpful recognition for the presence of conduction mechanism in the synthesised HAp samples. The electrical and the optical properties may be tuned by altering the pH value which is concluded from the current work.