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Facile synthesis of controllable carbonate-doped TiO2 microspheres for visible light photocatalytic applications

  • Bingkun LiuEmail author
  • Xiaole Han
  • Yajun Wu
  • Yongfei Xue
  • Hengzhen Shi
Article
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Abstract

Mesoporous carbonate-doped TiO2 microspheres were prepared by a facile solvothermal route combining a low-temperature annealing process. XPS, TG, and FTIR analysis revealed the presence of carbonate species on TiO2 surface, which extended the optical absorption of the TiO2 microspheres to the visible region. The carbonate-doped T200 microspheres exhibited much higher photocatalytic degradation of MO activity compared with non-doped T400 microspheres under visible light illumination. By adjusting initial titanium precursor concentration and reaction time, the best photocatalytic performance of carbonate-doped T200 microspheres was obtained. In addition, carbonate-doped T200 microspheres also displayed good photocatalytic disinfection efficiency towards Escherichia coli under visible light exposure. Our study revealed that the carbonate-doped TiO2 microspheres would be applied in the water treatment for the degradation of organic pollutants and disinfection of bacteria.

Notes

Acknowledgements

The work is financially supported by the National Natural Science Foundation of China (No. 21571160), the National Natural Science Foundation of China-Henan Talents Fostering Joint Funds (No. U1504311), the Key Research Projects of the Science and Technology Department of Henan Province (Nos. 172102210544, 182102210153 and 182102210619), the Fundamental Research Funds for the Provincial Universities (No. 18KYYWF0109) and the Doctoral Scientific Research Foundation of Zhengzhou University of Light Industry (No. 2015BSJJ044).

Supplementary material

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Supplementary material 1 (DOCX 453 KB)

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Copyright information

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

Authors and Affiliations

  • Bingkun Liu
    • 1
    Email author
  • Xiaole Han
    • 1
  • Yajun Wu
    • 1
  • Yongfei Xue
    • 1
  • Hengzhen Shi
    • 1
  1. 1.School of Material and Chemical EngineeringZhengzhou University of Light IndustryZhengzhouPeople’s Republic of China

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