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Sol–gel preparation and photocatalytic performance of TiO2/SrAl2O4: Eu2+, Dy3+ toward the oxidation of gaseous benzene

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Abstract

It has been found that the photocatalytic activity of TiO2 toward the decomposition of gaseous benzene can be greatly enhanced by loading TiO2 on the surface of SrAl2O4: Eu2+, Dy3+ using sol–gel technology. The prepared photocatalyst was characterized by BET, XRD, and XPS analyses. XRD results reveal that the peaks of titania in either rutile or anatase form are not detected by XRD in the 2θ region from 20° to 50°. The binding energy values of Ti 2p of pure TiO2 are 458.90 and 464.60 eV, while for TiO2/SrAl2O4: Eu2+, Dy3+, the binding energy values of Ti 2p are 458.50 and 464.20 eV. The results indicate that the optimum loading of TiO2 is 1 wt% and TiO2/SrAl2O4: Eu2+, Dy3+ (1 wt%) demonstrates 1.4 times the photocatalytic activity of that of pure TiO2, but the underlying mechanism of SrAl2O4: Eu2+, Dy3+ in the photocatalytic reaction remains to be unraveled.

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Acknowledgments

This project was supported financially by the Specialized Research Fund for the Doctoral Program of Sichuan University of Science and engineering (No. 07ZR13) and Key Cultivation Program of Sichuan province (No. 07zz020).

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Authors and Affiliations

  1. Sichuan Key Laboratory of Green Catalysis, College of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering, 643000, Zigong, People’s Republic of China

    Jun bo Zhong, Di Ma, Xi yang He & Jian zhang Li

  2. College of Chemistry, Sichuan University, 610064, Chengdu, People’s Republic of China

    Yao qiang Chen

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  1. Jun bo Zhong
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  2. Di Ma
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Correspondence to Jun bo Zhong.

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Zhong, J.b., Ma, D., He, X.y. et al. Sol–gel preparation and photocatalytic performance of TiO2/SrAl2O4: Eu2+, Dy3+ toward the oxidation of gaseous benzene. J Sol-Gel Sci Technol 52, 140–145 (2009). https://doi.org/10.1007/s10971-009-2003-5

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  • DOI: https://doi.org/10.1007/s10971-009-2003-5

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