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Photocatalytic Removal of 17α-Ethinyl Estradiol Using the Bi2O3/Bi2O4 Photocatalyst

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Abstract

A series of Bi2O3/Bi2O4 composites were prepared by calcining raw materials with different NaBiO3/KOH mass ratios. The Bi2O3/Bi2O4 photocatalysts were characterized by the various measurements and their photocatalytic performance was assessed by degradation of 17α-ethinyl estradiol (EE2). The Bi2O3/Bi2O4 photocatalysts have wider visible light absorption and lower fluorescence emission intensity than the commercial Bi2O3. So, they displayed superior performance in the degradation of EE2. After the adsorption equilibrium of EE2 was reached, the degradation efficiency of Bi2O3/Bi2O4 for EE2 can reach a maximum value of ~ 100% in 12 min under the visible-light illumination. Degradation analysis results indicated that both holes (h+) and superoxide radical (·O2−) can affect the degradation efficiency of EE2.

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Acknowledgements

Those works were supported by National Natural Science Foundation of China (No. 21763032, Nos. 21261026 and 21767030) and Major Project of Kunming Science and Technology Bureau (No. 2017-1-S-12305).

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Authors and Affiliations

  1. School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China

    Yanju Long, Lingxin Li, Shan Wang, Yu Chen, Lulu Wang, Sifeng Zhang & Fengzhi Jiang

  2. School of Chemistry and Biotechnology, Yunnan MinZu University, Kunming, 650500, China

    Lijun Luo

Authors
  1. Yanju Long
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  2. Lingxin Li
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  3. Shan Wang
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  4. Yu Chen
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  5. Lulu Wang
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  6. Sifeng Zhang
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  7. Lijun Luo
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  8. Fengzhi Jiang
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Correspondence to Fengzhi Jiang.

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Long, Y., Li, L., Wang, S. et al. Photocatalytic Removal of 17α-Ethinyl Estradiol Using the Bi2O3/Bi2O4 Photocatalyst. Catal Lett 148, 3608–3617 (2018). https://doi.org/10.1007/s10562-018-2561-7

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  • DOI: https://doi.org/10.1007/s10562-018-2561-7

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