Abstract
The Eu-doped TiO2 nanocrystals with different content of Eu3+ and the Eu-doped TiO2-ZnO composite powders with different content of ZnO were prepared by sol-gel method. The X-ray diffraction (XRD) spectra and photoluminescence(PL) spectra indicated that all of the Eu-doped TiO2 have anatase structure. It indicated that the incorporation of Eu3+ can inhibit the transformation of TiO2 from anatase to rutile phase. With the increase of the content of Eu3+, the luminous intensity first increased and then decreased, and luminescent properties were best when the content of Eu3+ is 1.1%. Considering the Eu-doped TiO2-ZnO composite powders, with the increasing of the proportion of ZnO, a Zn2TiO4 phase has been gradually generated. When the content of ZnO up to 40%, the luminescent properties are the best.
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