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

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.

• Periodical: Advanced Materials Research (Volumes 463-464)
• Pages: 290-294
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.463-464.290
• Online since: February 2012
• Authors: Hong Tao Gao, Wen Chao Liu
• Keywords: Facile Systhesis, La, Photocatalysis, Y Co-Doped TiO₂

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