New Materials, Compounds and Applications

ISSN Print: 2521-7194

ISSN Online: 2523-4773

New Materials, Compounds and Applications is an open access, strictly peer reviewed journal that is devoted to publication of the reviews and full-length papers recording original research results on, or techniques for, studying the relationship between structure, properties of materials and compounds and their applications. Materials include metals, ceramics, glasses, polymers, energy materials, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials.

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Effect of Morphology on Luminescence and Antibacterial Activity of Europium Doped Hydroxyapatite Particles

Published: 04-12-2025

https://doi.org/10.62476/nmca.93439

Abstract

Eu-doped hydroxyapatite (HA:Eu) powders with spheres, rods and plates morphologies were synthesized via the solvothermal method. The structural and morphological properties of the samples were analyzed using X-ray diffraction (XRD) and scanning electron microscopy (SEM). Vibrational properties were investigated through Fourier-transform infrared (FT-IR) spectroscopy and photoluminescence (PL) studies. XRD analysis confirmed that all HA:Eu samples crystallized in a pure hexagonal phase without secondary phases, with a calculated crystallite size of approximately 20 nm. FT-IR spectra exhibited the characteristic vibrational bands of stoichiometric HA. Luminescence studies revealed that the luminescence originates from Eu³⁺ ions occupying the Ca²⁺(I) sites in the HA lattice. The morphology of the particles had a significant influence on the emission intensity and transition efficiency, with spherical particles (HA-S) showing the highest photoluminescence due to enhanced Eu³⁺ site occupancy and minimized scattering effects, while rod- and plate-like structures exhibited reduced emission intensity.