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Preparation of Er 3+:YAlO 3/Fe-doped TiO 2–ZnO and its application in photocatalytic degradation of dyes under solar light irradiation

Preparation of Er 3+:YAlO 3/Fe-doped TiO 2–ZnO and its application in photocatalytic degradation of dyes under solar light irradiation,10.1016/j.desal

Preparation of Er 3+:YAlO 3/Fe-doped TiO 2–ZnO and its application in photocatalytic degradation of dyes under solar light irradiation   (Citations: 1)
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In this work, Er3+:YAlO3/Fe-doped TiO2–ZnO composite, a novel photocatalyst, was synthesized by ultrasonic dispersion and liquid boiling method and characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Of which, as an upconversion luminescence agent, the Er3+:YAlO3 can transform the visible light in solar energy into ultraviolet light, satisfying the requirement of TiO2–ZnO composite for photocatalytic degradation. The photocatalytic activity of Er3+:YAlO3/Fe-doped TiO2–ZnO composite was evaluated through the degradation of Acid Red B dye under solar light irradiation. The effects of preparation conditions such as Er3+:YAlO3 content, heat-treated temperature and heat-treated time on the photocatalytic activity of Er3+:YAlO3/Fe-doped TiO2–ZnO composite were examined. In addition, the influences of solar light irradiation time, dye initial concentration and Er3+:YAlO3/Fe-doped TiO2–ZnO amount as well as organic dyes on the photocatalytic degradation were also investigated. The experimental results indicated that the Er3+:YAlO3/Fe-doped TiO2–ZnO composite can effectively utilize solar energy to degrade Acid Red B dye and its photocatalytic activity was much superior to that of Fe-doped TiO2–ZnO composite under the same condition.
Journal: Desalination , vol. 268, no. 1, pp. 68-75, 2011
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