Synthesis, characterization, mechano-luminescence, thermoluminescence, and antibacterial properties of SrMgAl10O17:Eu phosphor

Abstract

In this work, the SrMgAl10O17:Eu2+, efficient nanophosphors were prepared using combustion route by employing urea as a fuel. The crystallite sizes of the synthesized phosphor were found in the order of ∼15 nm–90 nm by the Hall-Williamson equation. The surface area of the phosphor was found ∼35.9 m2/g. The ML (Mechano-luminescence) and TL (Thermo-luminescence) properties were used for comparison between traditional and modified urea fuel combustion reaction (MUFC). The great enhancement of ML intensity was found ∼70%, and TL intensity was found ∼123%, as compared to that of the phosphor prepared by the traditional combustion route. The ML and TL emission spectra have been observed in the blue visible region at ∼470 nm. Therefore, this phosphor may be useful in PDP as a blue light emitting phosphor, ML damage sensor, and TL dosimeter for low-dose UV radiation. Long persistence phenomena of the phosphor were discussed using TL decay properties. Combustion derived products SrMgAl10O17:Eu may behave just like Eco-materials. Because micro particles of SrMgAl10O17:Eu does not shows antimicrobial activity, But very less nanoparticle of SrMgAl10O17:Eu (E50 sample) show antimicrobial activity, therefore, E50 phosphor sample may be useful in Food preservation, safe cosmetics, medical devices, and water treatment etc.