La and/or Y doped TiO2: Facile Synthesis and Enhanced Photocatalysis

• Key Words:Facile Systhesis; Photocatalysis; La; Y co-doped TiO2
• Abstract:Nanocrystalline samples of titanium dioxide (TiO2) monodoped or co-doped with La and Y were prepared by a facile method, using Ti(OC4H9)(4) as the precursor. All products were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and UV-visible diffuse reflectance spectra (DRS), respectively. Photocatalytic activities of the products were assessed by the photocatalytic decomposition of methyl orange (MO). Both of undoped TiO2 and doped-TiO2 samples exclusively consist of primary anatase crystallites, which further form spherical aggregates with diameters ranging from 14 to 21 nm. The photocatalytic performances of rare earth (RE) element co-doped samples were much higher than that of single doped and pure TiO2 under UV-visible-light irradiation. It indicated that a strong La-Y synergistic interaction appeared to play a decisive role in driving the excellent photocatalytic performance of LYT.
• Volume:463-464
• Translation or Not:no