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Journal of Materials Science

, Volume 55, Issue 5, pp 1973–1983 | Cite as

Synthesis of cobalt-doped tubular carbon nitride from organic–inorganic hybrid precursor for photocatalytic hydrogen generation

  • Yingying Du
  • Lei ZhaoEmail author
  • Hui ChenEmail author
  • Zhaohui Huang
  • Xuan He
  • Wei Fang
  • Weixin Li
  • Xianghui Zeng
  • Fuqing Zhang
Chemical routes to materials
  • 88 Downloads

Abstract

g-C3N4 has been widely investigated in photocatalytic water splitting, even though they still suffer low specific surface area and high carrier recombination. Here Co-doped g-C3N4 (Co–C3N4) has been successfully synthesized under an argon atmosphere to 550 °C for 4 h via pyrolysis of an organic–inorganic hybrid precursor which was pre-prepared through the hydrothermal procedure. The Co–C3N4 possesses a higher specific surface area of 82 m2/g, which is 16.4 times as high as that of the bulk g-C3N4. On the other hand, the in situ Co doping can extend the light absorption region to visible light and greatly improve the charge transfer rate. Both the changes in surface area and optical property are beneficial to the photocatalytic reaction. The Co–C3N4 photocatalyst with the optimal ratio of cyanuric acid to melamine for 1:40 exhibited an excellent H2 production rate of 741.6 µmol g−1 h−1 under Xe lamp irradiation. The possible formation mechanism of tubular Co–C3N4 is proposed. Meanwhile, designing unique organic–inorganic hybrid structures may open up a new way for excellent photocatalytic water splitting.

Notes

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (61604110, 51802234), the Natural Science Foundation of Hubei Provincial, China (2018CFC796, 2017CFC829, 2017CFB291) and the Department of Education Science Research Program of Hubei Province (Q20161110).

Supplementary material

10853_2019_4071_MOESM1_ESM.docx (2.3 mb)
Supplementary material 1 (DOCX 2396 kb)

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Copyright information

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

Authors and Affiliations

  1. 1.The State Key Laboratory of Refractories and MetallurgyWuhan University of Science and TechnologyWuhanPeople’s Republic of China
  2. 2.School of Materials and MetallurgyWuhan University of Science and TechnologyWuhanPeople’s Republic of China
  3. 3.School of Chemical and EnvironmentalWuhan Institute of TechnologyWuhanPeople’s Republic of China

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