Abstract
In the current study, for first time trivalent lanthanum (La) ions was incorporated with different loading into the 3D-sponge-like structured of TUD-1 mesoporous material. All fabricated materials were synthesized via applied one-pot sol-gel hydrothermal method. Different physical and chemical characterization techniques such as ICP, XRD, SEM, EDX, mapping, N2-sorption, DR-UVVis, HR-TEM, Raman and XPS were applied to characterize the synthetized materials. The prepared materials confirmed the formation of isolated active sites at low loading of lanthanum La+3 ions into TUD-1 silica matrix. On the another side, the nanoparticles of La2O3 with average size 10-50 nm of oxide crystals were found into the pores of TUD-1 at high loading of Lanthanum. The photoluminescence (PL) property of the synthetized samples were investigated under different excitation wavelengths ranged from UV to visible illumination. La-TUD-1 showed exhibited high emission PL spectra under the illumination of 346 nm, 380 nm, 470 nm, and 580 nm wavelength. The obtained PL emission bands are related to blue and green emission and hence can be employed as promised blue-green LEDs and biological labeling in different future application.