Preparation of Er3+:YAlO3/Fe- and Co-doped TiO2–ZnO coated composites and their visible-light photocatalytic activity in degradation of some organic dyes

Preparation of Er3+:YAlO3/Fe- and Co-doped TiO2–ZnO coated composites and their visible-light... In this paper, an up-conversion luminescence agent (Er3+:YAlO3), which can effectively transform the visible light in solar light into ultraviolet light, was prepared. Then, for a visible-light photocatalytic degradation reaction, the prepared Er3+:YAlO3 was coated by Co- and Fe-doped TiO2–ZnO films thorough sol–gel process, respectively, and the Er3+:YAlO3/Fe- and Co-doped TiO2–ZnO coated composites were obtained. The crystal forms, particle sizes, chemical compositions, and weight change process of the Er3+:YAlO3/Fe- and Co-doped TiO2–ZnO coated composites were analyzed by using XRD, TEM, SEM, EDX, and TG–DTA instruments. The photocatalytic activities of the Er3+:YAlO3/Fe- and Co-doped TiO2–ZnO coated composites were evaluated through the degradation of azo fuchsine under visible light irradiation. It indicated that the visible light photocatalytic reduction ratio of Fe- and Co-doped TiO2–ZnO composites were 47.8 and 67.9 %, while after adding 15 wt% Er3+:YAlO3, the reduction ratio reached 93.5 and 95.5 %, respectively. In addition, the photocatalytic effect of Er3+:YAlO3/Co-doped TiO2–ZnO is better than that of Er3+:YAlO3/Fe-doped TiO2–ZnO. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Preparation of Er3+:YAlO3/Fe- and Co-doped TiO2–ZnO coated composites and their visible-light photocatalytic activity in degradation of some organic dyes

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Publisher
Springer Journals
Copyright
Copyright © 2015 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-015-2306-9
Publisher site
See Article on Publisher Site

Abstract

In this paper, an up-conversion luminescence agent (Er3+:YAlO3), which can effectively transform the visible light in solar light into ultraviolet light, was prepared. Then, for a visible-light photocatalytic degradation reaction, the prepared Er3+:YAlO3 was coated by Co- and Fe-doped TiO2–ZnO films thorough sol–gel process, respectively, and the Er3+:YAlO3/Fe- and Co-doped TiO2–ZnO coated composites were obtained. The crystal forms, particle sizes, chemical compositions, and weight change process of the Er3+:YAlO3/Fe- and Co-doped TiO2–ZnO coated composites were analyzed by using XRD, TEM, SEM, EDX, and TG–DTA instruments. The photocatalytic activities of the Er3+:YAlO3/Fe- and Co-doped TiO2–ZnO coated composites were evaluated through the degradation of azo fuchsine under visible light irradiation. It indicated that the visible light photocatalytic reduction ratio of Fe- and Co-doped TiO2–ZnO composites were 47.8 and 67.9 %, while after adding 15 wt% Er3+:YAlO3, the reduction ratio reached 93.5 and 95.5 %, respectively. In addition, the photocatalytic effect of Er3+:YAlO3/Co-doped TiO2–ZnO is better than that of Er3+:YAlO3/Fe-doped TiO2–ZnO.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Oct 18, 2015

References

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