Synthesis and Characterization of Hydroxyapatite Nanoparticles for Environmental Applications

Ayala L.; Guzman M.; Galarreta B.C.; Herrera J.E.; Chin Y.-H.; Broomhead W. · World Congress on Recent Advances in Nanotechnology (2023) · DOI: 10.11159/icnnfc23.162

Resumen

The present research presents the synthesis of nanoparticles of hydroxyapatite (Nps-Hap) and its potential uses for cadmium and chromium removal from contaminated effluents. The Nps-Hap obtained by chemical reaction were characterized with Scanning Electron Microscopy-Energy Dispersive X-Ray Spectroscopy (SEM-EDAX), X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM) and Brunauer–Emmett–Teller (BET) isotherm analysis. The Ca/P calculated from EDAX analysis was 1.78. The synthesized nanoparticles show a surface area of 140.5 m2.g-1 and a pore radius of 7 nm. The results of XRD analysis showed the presence of Hap phases. TEM images show semispherical and elongated nanoparticles with mean diameter of 36.7 nm ± 13.5 nm. The removal kinetics showed that cadmium is removed more effectively than chromium, at pHs of 3 and 5 respectively.

Instituciones: Pontificia Universidad Católica del Perú