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Journal of Materials Science

, Volume 54, Issue 21, pp 13740–13752 | Cite as

Fabrication of bismuth titanate nanosheets with tunable crystal facets for photocatalytic degradation of antibiotic

  • Juan Wang
  • Wenwen Liu
  • Dongling Zhong
  • Yongjin Ma
  • Quanyin Ma
  • Ziyu WangEmail author
  • Jun PanEmail author
Materials for life sciences
  • 74 Downloads

Abstract

The synergism between different surface facets of semiconductor with optimal ratios can contribute to obtain enhanced photocatalytic degradation performance. Herein, a bismuth-based material Bi4Ti3O12 exposed with {001} top facets and {010}/{100} lateral facets was prepared by the molten-salt method. More importantly, the ratio of different exposed facets could be controlled by adjusting the synthesis temperature of molten-salt synthesis process. The as-prepared Bi4Ti3O12 exposed with the optimal ratio of {001} top facets to {010}/{100} lateral facets exhibited the enhanced degradation activity of tetracycline hydrochloride (TC-HCl) under irradiation. The rate constant of optimal sample reached 0.904% min−1, over 3.3 times as compared with that of the counterpart with higher proportion of {001} facets. Besides, active species trapping experiments, photoelectrochemical measurements and selective photodeposition tests were used to illuminate the photocatalytic degradation mechanism. According to that, the enhanced degradation activity could be ascribed to crystal facet synergism which can promote photoinduced carrier separation. This work can give insights into designing and constructing other two-dimensional (2D) bismuth-based materials with the aim of enhancing photocatalytic degradation performance.

Notes

Acknowledgements

We greatly acknowledge the financial support of the National Natural Science Foundation of China (Grant No. 11674398).

Compliance with ethical standards

Conflict of interest

There are no conflicts of interest to declare.

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Copyright information

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

Authors and Affiliations

  1. 1.State Key Laboratory for Powder MetallurgyCentral South UniversityChangshaPeople’s Republic of China
  2. 2.Institute of Technological SciencesWuhan UniversityWuhanChina

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