Abstract
Y 2 O 3 supported photocatalysts MOx (M = Fe, Ti and Bi)/Y 2 O 3 were synthesized by hydrothermal and deposition-precipitation method and used in photocatalytic degradation of xylenol orange and rhodamine B under UV light irradiation. The crystalline structure and optical properties were well characterized by XRD and UV-vis DRS. The results of XRD revealed that the MOx/Y 2 O 3 were composed of Fe 2 O 3 , TiO 2 , Bi 0.8 Y 1.2 O 3 and Y 2 O 3 . The UV-vis DRS showed that MOx/Y 2 O 3 photocatalysts exhibited stronger absorption in ultraviolet, and the absorption edge shifted to visible light region significantly. The photocatalytic experiments indicated that MOx/Y 2 O 3 photocatalysts showed better activity for photodegradation of xylenol orange than rhodamine B. Moreover, the role of Y 2 O 3 and the mechanism of photocatalysis is proposed.
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