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Journal of Materials Science

, Volume 54, Issue 13, pp 9397–9413 | Cite as

Bi-modified 3D BiOBr microsphere with oxygen vacancies for efficient visible-light photocatalytic performance

  • Chenghe Hua
  • Xiaoli DongEmail author
  • Yu Wang
  • Nan Zheng
  • Hongchao Ma
  • Xiufang Zhang
Chemical routes to materials
  • 26 Downloads

Abstract

Flower-like Bi that deposited BiOBr with oxygen vacancies (OVs) has been successfully fabricated via a simple solvothermal method followed by an easy hydrogenated treatment. The characterization results show that three-dimensional (3D) H-1.0Bi@BiOBr microspheres with the diameter about 1.2–1.5 μm were self-assembled by countless two-dimensional (2D) interlaced BiOBr nanosheets. Bi-deposited and oxygen vacancies endowed the H-1.0Bi@BiOBr samples with a dramatically enhanced photocatalytic performance for the degradation of organic pollutants (Rhodamine B and Ofloxacin) and the solar-energy nitrogen fixation. It disclosed that the photocatalytic performance order of the photocatalyst was H200-1.0Bi@BiOBr > H250-1.0Bi@BiOBr > H150-1.0Bi@BiOBr > 1.0Bi@BiOBr > 2.0Bi@BiOBr > 0.5Bi@BiOBr > BiOBr. Particularly, the enhanced photocatalytic activity was ascribed to higher BET specific area, enhanced visible-light absorption, effective photoinduced charge separation and suitable amounts of oxygen vacancies. The H-1.0Bi@BiOBr samples also showed good photochemical stability under repeated visible-light irradiation. This work could shed light on exploring high-photocatalytic-property materials and stimulating the development of OVs-Bi@BiOBr photocatalysts, which had great potential for the solar-energy conversion, environmental purification and organic pollution treatment in water.

Notes

Acknowledgements

The research was supported by the National Natural Science Foundation of China (Grant No. 21878031, Grant No. 21476033 and Grant No. 21577008).

Supplementary material

10853_2019_3556_MOESM1_ESM.docx (6.2 mb)
Supplementary material 1 (DOCX 6389 kb)

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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Light Industry and Chemical EngineeringDalian Polytechnic UniversityDalianPeople’s Republic of China

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