@conference{
author = "Stamenković, Tijana and Ranđelović, Marjan and Lojpur, Vesna",
year = "2023",
abstract = "In this study, we present the synthesis of a novel multifunctional materials, with particular accent on their photoluminescent and photocatalytic abbilities. SrGd2O4 powders co-doped with rare earth ions (Yb3+/Er3+, Yb3+/Ho3+ and Yb3+/Tm3+) with different mutual ratios are prepared via combustion route. X-ray Powder Diffraction patterns proved that all samples crystallize as a pure orthorhombic phase. Luminescence properties were measured and characteristic emission lines were revealed for each dopant system: red emission at 661 nm and two green emissions at 551 and 523 nm for Yb3+/Er3+ samples; green emission at 550 nm, red emission at 671 nm and infrared emission at 758 nm for Yb3+/Ho3+ samples; two blue emission bands at 450 nm and 474 nm, and red emission band at 650 nm for Yb3+/Tm3+ co-doped samples. UV-VIS Diffuse Reflectance Spectroscopy was performed in order to examine materials bandgap. Value of 4.3 eV was obtained for each sample, as well as the additional values from the bands at lower energies, which indicate potentially good photocatalytic properties. UV-VIS Absorption Spectroscopy was used to measure changes of the methylene blue concentration during the photocatalytic degradation process. After 4 h of exposure to the simulating Sun irradiation, more than 60% of the initial dye concentration was decomposed. Reaction parameters (MB concentration and catalyst mass) were altered in order to achieve the best photocatalytic performances of this newly synthesized materials.",
publisher = "Belgrade : Serbian Chemical Society and Serbian Young Chemists' Club",
journal = "9th Conference of Young Chemists of Serbia : Book of abstracts",
title = "Multifunctional up-converting nanophosphorus: photoluminescent and photocatalytic properties",
pages = "159-159",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13173"
}
