Thesis (B.S.) -- Cagayan State University, 2024.
Includes bibliographical references.

Nanotechnology significantly advances various fields by manipulating materials at the nanoscale, particularly nanoparticles like hydroxyapatite (HAp) nano- powder. Known for its excellent biocompatibility and osteoconductivity, HAp finds extensive use in biomedical, cosmetic, catalytic, and energy storage applications. This study investigates the synthesis of hydroxyapatite nano-powders from Agurong (Jagora asperata) shells using Sol-Gel Method. The synthesized HAp nano-powders were characterized using X-Ray Diffraction (XRD) analysis, nano-powder size calculation using Scherrer equation, and Scanning Electron Microscopy - Energy Dispersive Spectroscopy (SEM-EDS) analysis. The XRD analysis showed a similar chemical structure to commercial HAp. The Scherrer equation indicated a particle size of 68.65 nanometers, which is within the expected range of less than 100 nanometers, meeting the criteria for nano-scale crystallites. SEM-EDS analysis confirmed the identity of Agurong HAP with a Ca/P ratio of 1.79, which is within the acceptable range of the Ca/P ratio of a standard hydroxyapatite of 1.4 to 2.0. Through the Sol-Gel method, 25.71 grams of HAP nano-powders were successfully synthesized from 500 grams of raw Agurong, demonstrating the potential of this underutilized resource from the Philippines for the production of HAP nano-powders.

Keywords: Agurong, Hydroxyapatite, Nano-powders, Nanotechnology, Sol-Gel Method.