Preparation of Er³⁺:YAlO₃/Fe-doped TiO₂–ZnO and its application in photocatalytic degradation of dyes under solar light irradiation

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 tra...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Desalination 2011-03, Vol.268 (1-3), p.68-75
Hauptverfasser: Gao, Jingqun, Luan, Xiaoyu, Wang, Jun, Wang, Baoxin, Li, Kai, Li, Ying, Kang, Pingli, Han, Guangxi
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung: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.
ISSN:0011-9164
1873-4464
DOI:10.1016/j.desal.2010.09.052