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Citric acid-modulated in situ synthesis of 3D hierarchical Bi@BiOCl microsphere photocatalysts with enhanced photocatalytic performance

  • Xiangde Su
  • Liqiong Hou
  • Le Xia
  • Xiang Yu
  • Jia Guo
  • Yi Zhu
  • Yuanming Zhang
Chemical routes to materials
  • 5 Downloads

Abstract

3D hierarchical Bi@BiOCl microspheres were successfully synthesized by a facile solvothermal method using citric acid as a modulating agent and the growth process was revealed. The modulation of citric acid not only reduced the size of BiOCl nanosheets, finally transforming BiOCl microflowers into microspheres, but also induced the in situ reductive deposition of metallic Bi on the surface of the microspheres. Consequently, Bi@BiOCl microspheres showed larger specific surface areas and total pore volumes, higher absorptivity to the visible light and better charge transfer ability than BiOCl microflowers. As a result, Bi@BiOCl microspheres exhibited much better photocatalytic performance than BiOCl microflowers. Bi@BiOCl microspheres modulated by 2.8 g citric acid showed the highest photocatalytic activity, which was 4.4 and 2.5 times higher than BiOCl microflowers in degrading RhB under visible light and salicylic acid under UV light, respectively. This work may provide a new insight into simultaneous size control and in situ metal deposition for Bi-containing photocatalysts and other materials.

Notes

Acknowledgements

This work was supported by National Natural Science Foundation of China (21276104 and 21706091) and GuangDong Provincial Department of Science and Technology Application Research and Development Supporting Special Fund Project (2015B020235007).

Compliance with ethical standards

Conflict of interest

We declare that we do not have any commercial or associative interest that represents a conflict of interest in connection with the work submitted.

Supplementary material

10853_2018_3176_MOESM1_ESM.docx (1 mb)
Supplementary material 1 (DOCX 1045 kb)

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Copyright information

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

Authors and Affiliations

  1. 1.Department of ChemistryJinan UniversityGuangzhouPeople’s Republic of China
  2. 2.Analytical and Testing CenterJinan UniversityGuangzhouPeople’s Republic of China
  3. 3.Department of EcologyJinan UniversityGuangzhouPeople’s Republic of China

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