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Journal of Materials Science: Materials in Electronics

, Volume 29, Issue 22, pp 19461–19471 | Cite as

Preparation of CuOx@ZnFe-LDH composites and photocatalytic degradation of 4-nitrophenol by activated persulfate

  • Caifeng Li
  • Guoqing Zhao
  • Lukai Liu
  • Jingang Yu
  • Xinyu Jiang
  • Feipeng Jiao
Article
  • 104 Downloads

Abstract

In order to meet the current challenges of wastewater treatment, a novel, environment-friendly, efficient and economical treatment method has always been an ideal choice for the degradation of organic pollutants. In this work, active and stable CuOx@ZnFe-LDH composite was prepared via co-precipitation method. A series of characterization methods were used to investigate the structural characteristics of the obtained products. The photocatalytic performance of the prepared composites were evaluate by degrading 4-nitrophenol under mild conditions. Besides, with the addition of persulfate, the photocatalytic degradation activity was greatly enhanced due to the synergistic effect of catalysts and ultraviolet light on persulfate activation. The results showed that CuOx@ZnFe-LDH composite obtained the best photocatalytic performance compared with ZnFe-LDH and ZnFe-CLDH, which could completely degrade 10 mg/L of 4-nitrophenol in less than 60 min. After four consecutive cycles CuOx@ZnFe-LDH composite could still remain remarkable reusability and stability. In addition, a possible photocatalytic degradation mechanism was proposed according to the characterization and experimental results. The CuOx@ZnFe-LDH composite was expected to be an efficient catalyst for energy conversion and environmental treatment. This work also was expected to provide a new idea for designing new type of catalysts for organic pollutants treatment.

Notes

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (No. 21476269, 21776319). The authors also thank the Fundamental Research Funds for the Central Universities of Central South University (No.2017zzts777, 2018zzts377) and the Open-End Fund for the Valuable and Precision Instruments of Central South University (No. CSUZC201832) for the financial supports of this work.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Caifeng Li
    • 1
  • Guoqing Zhao
    • 1
  • Lukai Liu
    • 1
  • Jingang Yu
    • 1
  • Xinyu Jiang
    • 1
  • Feipeng Jiao
    • 1
  1. 1.School of Chemistry and Chemical EngineeringCentral South UniversityChangshaPeople’s Republic of China

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