University of Belgrade : Institute for Multidisciplinary Research
Abstract
In this study, we present surface examination and investigation of the photocatalytic activity of a newly synthesized down-conversion luminescent nanomaterial SrGd2O4 doped with Dy3+ ions. Samples were prepared via glycineassisted combustion method, were formed gel was firstly burned at 500 °C for 1.5 h and then calcined at 1000 °C for 2.5 h. To see the crystallinity and phase purity, Xray diffraction (XRD) measurements were performed and showed that doped sample crystallizes as a single phase with the orthorhombic lattice of SrGd2O4. Luminescent characterization indicated presence of all appropriate emission peaks related to Dy3+ dopant ions. X-ray photoelectron spectroscopy (XPS) was used to investigate surface composition and survey spectra confirmed presence of expected elements (Sr, Gd, O and Dy). Photocatalytic properties of SrGd2O4:Dy were explored in the photocatalytic degradation of organic dye methyl orange (MO) under simulated solar light irradiation. UV/Vis spectrometer was used to measure a decrease in MO concentration in water solutions during the experiment. Aliquots of the working solutions were taken at the exact time intervals, and the results indicate successful dye decomposition rate after 4 h.VI Serbian Ceramic Society Conference : program and the book of abstracts; June 28-29, 2022; Belgrad
