Preparation and Photocatalytic Properties of La, Ce and Nonmetal N Co-Doped TiO₂

Abstract:

TiO₂, 1%La/TiO₂, 1%Ce/TiO₂ and a series of La and Ce co-doped TiO₂ photocatalysts were prepared by sol-gel method. Using sol-gel method combine with hydrothermal method prepared rare earth La, Ce and nitrogen co-doped TiO₂ photocatalysts. The microstructure, spectroscopy performance and ion doped form of prepared samples were characterized by X-ray powder diffraction (XRD), UV-Vis diffuse reflectance spectroscopy techniques and X-ray photoelectron spectroscopy (XPS). The photocatalytic activity of doped TiO₂ were examined by measuring the photodegradation of methyl orange. The results showed that the products were all anatase TiO₂ nano powder, doping La or Ce hinder the growth of TiO₂ particle, further more, doping La and Ce together hinder the growth of TiO₂ particle more effective, doping N broaden the light response range of TiO₂ photocatalyst. At the same time, the photocatalytic activity results indicated that the prepared samples showed superior UV light photocatalytic activity, the sample 1% (La:Ce,9:1)-N/TiO₂ showed the highest UV-vis photocatalytic activity.

• Periodical: Key Engineering Materials (Volume 680)
• Pages: 193-197
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.680.193
• Online since: February 2016
• Authors: San Ti Yi, Si Qin Zhao*
• Keywords: Non Metal Co-Doped, Photocatalytic Activity, Rare Earth, TiO₂

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