Synergistic Effect of Eu³⁺ and Sm³⁺ Co-Doping on Photocatalytic Activity of TiO₂ Nanoparticles

Abstract:

Pure TiO₂, Eu³⁺ and Sm³⁺ co-doping TiO₂ composite nanoparticles have been prepared by sol-gel method and characterized by the techniques such as XRD, SEM and DRS. The photocatalytic degradation of methylene blue (MB) in aqueous solution was used as a probe reaction to evaluate their photocatalytic activity. The matrix distortion of TiO₂ nano-particles increases after co-doping of Eu³⁺ and Sm³⁺ and a blue-shift of the absorption profile are clearly observed. The results show that co-doping of Eu³⁺ and Sm³⁺ inhibits the phase transformation of TiO₂ from anatase to rutile, decreases the diameter of TiO₂ nano-particles and significantly enhance the photocatalytic activity of TiO₂. The Eu³⁺ and Sm³⁺ co-doped into TiO₂ nano-particles exert a synergistic effect on their photocatalytic activity.

• Periodical: Advanced Materials Research (Volumes 197-198)
• Pages: 891-894
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.197-198.891
• Online since: February 2011
• Authors: Cheng Zhi Jiang, Xu Dong Lu
• Keywords: Co-Doping, Europium (Eu), Photocatalytic, Samarium, Synergistic Effect, TiO₂

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