Abstract
Abstract TiO 2 /BaAl 2 O 4 : Eu 2+ , Dy 3+ photocatalysts were prepared by loading TiO 2 sol on the surface of BaAl 2 O 4 : Eu 2+ , Dy 3+ via sol–gel method. The photocatalytic activity was evaluated by the decomposition of gaseous benzene under UV light illumination. The as-prepared photocatalysts were characterized by nitrogen adsorption–desorption, powder X-ray diffraction and X-ray photoelectron spectroscopy. Results reveal that the optimum loading amount of TiO 2 on BaAl 2 O 4 : Eu 2+ , Dy 3+ can enhance the photocatalytic activities. The BaAl 2 O 4 : Eu 2+ , Dy 3+ samples are all hexagonal phase, the deposited Titania is highly dispersed on the surface of carrier, and a certain interaction exists between TiO 2 and BaAl 2 O 4 : Eu 2+ , Dy 3+ .
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