Publication Date:
2012-11-08
Description:
The Er 3+ :Y 3 Al 5 O 12 , an upconversion luminescence agent, which is able to transform the visible light to ultraviolet light, was synthesized by nitrate-citric acid method. And then, a novel photocatalyst, Er 3+ :Y 3 Al 5 O 12 /ZnO composites, was prepared by ultrasonic dispersing and liquid boil method. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to characterize the structural morphology and surface properties of the Er 3+ :Y 3 Al 5 O 12 /ZnO. Azo Fuchsine dye was selected as target organic pollutant to inspect the photocatalytic activity of Er 3+ :Y 3 Al 5 O 12 /ZnO. The key parameters affecting the photocatalytic activity of Er 3+ :Y 3 Al 5 O 12 /ZnO, such as Er 3+ :Y 3 Al 5 O 12 content, heat-treatment temperature and heat-treatment time, were studied. In addition, the effects of dye initial concentration, Er 3+ :Y 3 Al 5 O 12 /ZnO amount and solar light irradiation time were also reviewed, as well as the photocatalytic activity in degradation of other organic dyes were compared. It was found that the photocatalytic activity of Er 3+ :Y 3 Al 5 O 12 /ZnO was much superior to pure ZnO under the same conditions. Thus, the Er 3+ :Y 3 Al 5 O 12 /ZnO is a useful photocatalyst for the wastewater treatment because it can efficiently utilize solar light by converting visible light into ultraviolet light. Content Type Journal Article Category Photochemistry and Magnetochemistry Pages 2049-2056 DOI 10.1134/S0036024412130262 Authors L. N. Yin, College of Chemistry, Liaoning University, Shenyang, 110036 P. R. China Y. Li, College of Chemistry, Liaoning University, Shenyang, 110036 P. R. China J. Wang, College of Chemistry, Liaoning University, Shenyang, 110036 P. R. China Y. M. Kong, College of Pharmacy, Liaoning University, Shenyang, 110036 P. R. China Y. Zhai, College of Chemistry, Liaoning University, Shenyang, 110036 P. R. China B. X. Wang, College of Chemistry, Liaoning University, Shenyang, 110036 P. R. China K. Li, College of Chemistry, Liaoning University, Shenyang, 110036 P. R. China X. D. Zhang, College of Chemistry, Liaoning University, Shenyang, 110036 P. R. China Journal Russian Journal of Physical Chemistry A, Focus on Chemistry Online ISSN 1531-863X Print ISSN 0036-0244 Journal Volume Volume 86 Journal Issue Volume 86, Number 13
Print ISSN:
0036-0244
Electronic ISSN:
1531-863X
Topics:
Chemistry and Pharmacology
,
Physics
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