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Enhancement of solar light photocatalytic activity of TiO2-CeO2 composite by Er3+:Y3Al5O12 in organic dye degradation

  • Photochemistry and Magnetochemistry
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Abstract

The Er3+:Y3Al5O12, as an upconversion luminescence agent which is able to transform the visible part of the solar light to ultraviolet light, was prepared by nitrate-citrate sol-gel method. A novel solar light photocatalyst, Er3+:Y3Al5O12/TiO2-CeO2 composite was synthesized using ultrasonic treatment. The X-ray diffraction (XRD) and scanning election microscopy (SEM) were used to characterize the structural morphology of the Er3+:Y3Al5O12/TiO2-CeO2 composite. In order to evaluate the solar light photocatalytic activity of Er3+:Y3Al5O12/TiO2-CeO2 composite, the Azo Fuchsine dye was used as a model organic pollutant. The progress of the degradation reaction was monitored by UV-Vis spectroscopy and ion chromatography. The key influences on the solar light photocatalytic activity of Er3+:Y3Al5O12/TiO2-CeO2 were studied, such as Ti/Ce molar ratio, heat-treatment temperature and heat-treatment time. Otherwise, the effects of initial dye concentration, Er3+:Y3Al5O12/TiO2-CeO2 amount, solar light irradiation time and the nature of the dye on the solar light photocatalytic degradation process were investigated. It was found that the solar light photocatalytic activity of Er3+:Y3Al5O12/TiO2-CeO2 composite was superior to Er3+:Y3Al5O12/TiO2 and Er3+:Y3Al5O12/CeO2 powder in the similar conditions.

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Authors and Affiliations

  1. College of Chemistry, Liaoning University, Shenyang, 110036, P.R. China

    Y. Li, S. G. Li, L. Zhang, J. Wang, Y. Li & C. H. Ma

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  1. Y. Li
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  2. S. G. Li
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  3. L. Zhang
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  4. J. Wang
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  5. Y. Li
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  6. C. H. Ma
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Correspondence to J. Wang.

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Li, Y., Li, S.G., Zhang, L. et al. Enhancement of solar light photocatalytic activity of TiO2-CeO2 composite by Er3+:Y3Al5O12 in organic dye degradation. Russ. J. Phys. Chem. 88, 2411–2418 (2014). https://doi.org/10.1134/S0036024414130111

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  • DOI: https://doi.org/10.1134/S0036024414130111

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