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Novel ternary Ag/CeVO4/g-C3N4 nanocomposite as a highly efficient visible-light-driven photocatalyst

Journal of Advanced Ceramics volume 7, pages 50–57 (2018)Cite this article

Abstract

The CeVO4/graphitic C3N4 composites have exhibited much enhanced photocatalytic property for degrading methylene blue (MB) pollutant under visible light irradiation compared with single-phase g-C3N4 or CeVO4. The composite S5 obtained from an optimized mass ratio (5%) of CeVO4 to dicyanamide (DCDA) exhibits the highest photocatalytic activity. Here, ternary Ag/CeVO4/g-C3N4 composites denoted as X%Ag/S5 were prepared by an ultrasonic precipitation method to improve the photocatalytic property of S5. The TEM images show that CeVO4 and Ag nanoparticles are well distributed on the layered g-C3N4, which agree well with the XRD results. The UV spectra show that the 7%Ag/S5 sample has the widest absorption range and the enhanced absorption intensity under visible light irradiation. The corresponding band gap of 7%Ag/S5 (2.5 eV) is much lower than that of S5 (2.65 eV). The corresponding k value of 7%Ag/S5 is much higher than those of g-C3N4 and CeVO4. The degradation experiments for MB solution suggest that the 7%Ag/S5 sample has the optimal photocatalytic performance, which can degrade MB solution completely within 120 min. The enhanced photocatalytic property of the composites is ascribed to not only the effect of heterojunction structure, but also the surface plasma resonance effect of Ag nanoparticles.

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Acknowledgements

This work was supported by National Natural Science Foundation of China (No. 51502116), the Six Talents Peak Project in Jiangsu Province (No. 2011-ZBZZ045), Natural Science Foundation of Jiangsu Province (No. BK20140557), Special Funding of China Postdoctoral Science Foundation (No. 2016T90425), and China Postdoctoral Science Foundation (No. 2015M571682).

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Author notes

  1. J. Ren and Y. Z. Wu contributed equally to this work.

Affiliations

  1. School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China

    J. Ren, Y. Z. Wu, J. M. Pan, X. H. Yan, M. Chen, J. J. Wang, D. F. Wang, C. Zhou, Q. Wang & X. N. Cheng

  2. Institute for Advanced Materials, Jiangsu University, Zhenjiang 212013, Jiangsu, China

    X. H. Yan

  3. Institute of Green Materials and Metallurgy, Jiangsu University, Zhenjiang 212013, Jiangsu, China

    X. H. Yan & X. N. Cheng

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  1. J. Ren
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Correspondence to X. H. Yan.

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Ren, J., Wu, Y.Z., Pan, J.M. et al. Novel ternary Ag/CeVO4/g-C3N4 nanocomposite as a highly efficient visible-light-driven photocatalyst. J Adv Ceram 7, 50–57 (2018). https://doi.org/10.1007/s40145-017-0255-z

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  • DOI: https://doi.org/10.1007/s40145-017-0255-z

Keywords

  • g-C3N4
  • CeVO4
  • Ag
  • nanocomposites
  • photocatalytic performance