Preparation and Research on Luminescent Properties of Eu-Doped TiO₂-ZnO Composite Powders

Abstract

The Eu-doped TiO2nanocrystals 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 TiO2have anatase structure. It indicated that the incorporation of Eu3+can inhibit the transformation of TiO2from 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 Zn2TiO4phase has been gradually generated. When the content of ZnO up to 40%, the luminescent properties are the best.

Orange up-conversion in TiO₂-ZnO composite ceramics fabricated by metal organic decomposition

“…Mg 2 TiO 4 is known for its heat resistance and is often utilized in capacitors [14][15][16][17][18][19][20][21][22]. In addition, the oxide of a mixture of ZnO and TiO 2 has been applied in gas sensors [23], photocatalytic agents [24,25], chemical adsorbents [26], and for downconversion [27].…”