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Journal of Materials Science

, Volume 53, Issue 16, pp 11329–11342 | Cite as

Facile fabrication of hierarchical BiVO4/TiO2 heterostructures for enhanced photocatalytic activities under visible-light irradiation

  • Liang Shi
  • Chonglei Xu
  • Xun Sun
  • Hua Zhang
  • Zhaoxin Liu
  • Xiaofei QuEmail author
  • Fanglin DuEmail author
Chemical routes to materials

Abstract

BiVO4/TiO2 nanocomposites were fabricated by a facile wet-chemical process, followed by the synthesis of TiO2 hierarchical spheres via hydrothermal method. The BiVO4/TiO2 nanocomposites were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, UV–Vis diffuse reflectance spectroscopy and X-ray photoelectron spectroscopy. The results showed that prepared TiO2 presented hierarchical spherical morphology self-assembled by nanoparticles and an anatase–brookite mixed crystal phase. The introduction of monoclinic BiVO4 components retained the hierarchical structures and expanded the light response to around 510 nm. Type II BiVO4/TiO2 heterostructured nanocomposites exhibited improved photocatalytic degradation towards methylene blue under visible-light irradiation, especially for the composite photocatalysts with atomic Ti/Bi = 10, which showed double degradation rate than that of pure BiVO4. The enhanced photocatalytic mechanism of the heterostructured BiVO4/TiO2 nanocomposites was discussed as well.

Notes

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (NSFC, Grant No. 51272115 and NSFC, Grant No. 61504073) and Doctoral Found of QUST (No. 010022803).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest regarding the publication of this article.

Supplementary material

10853_2018_2442_MOESM1_ESM.doc (242 kb)
Supplementary material 1 (DOC 241 kb)

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Copyright information

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

Authors and Affiliations

  1. 1.College of Materials Science and EngineeringQingdao University of Science and TechnologyQingdaoPeople’s Republic of China

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