Effect of Eu 3+ Doping on the Photocatalytic Activity of Nanoparticles TiO2

Abstract

Abstract: The photocatalytic activities of Eu³⁺-doped TiO₂ nanoparticles prepared by sol-gel method and characterized with XRD and TG-DTA were stidied via photocatalytic oxidation of n-heptane. The enhanced photocatalytic activity of Eu³⁺-doped TiO₂ can be attributed to the fact that Eu³⁺ ions enter into the lattice of TiO₂ to lead to the lattice expansion, enhancing the distortion of lattice, and inhibiting the crystal phase transformation and the increase of grain size. It is found that the x(Eu³⁺)= 0.3% was optimal, and the photocatalytic activity of Eu³⁺-doped TiO₂ decreased with increasing the calcination temperature, and the higher the pH, the greater the photocatalytic activity.

Key words: Europium ion doping, Preparation of titanium dioxide, Photocatalytic oxidation activity

CLC Number:

O643.3

TrendMD:

YANG Qiu-Jing, XU Zi-Li, XIE Chao, XUE Bao-Yong, DU Yao-Guo, ZHANG Jia-Hua . Effect of Eu ³⁺ Doping on the Photocatalytic Activity of Nanoparticles TiO₂[J]. Chem. J. Chinese Universities, 2004, 25(9): 1711.

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Effect of Eu ³⁺ Doping on the Photocatalytic Activity of Nanoparticles TiO₂

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