Achieving Efficient Incorporation of π-Electrons into Graphitic Carbon Nitride for Markedly Improved Hydrogen Generation

Jing Li, Dandan Wu, James Iocozzia, Haiwei Du, Xueqin Liu, Yupeng Yuan, Wei Zhou, Zhen Li, Zhaoming Xue, Zhiqun Lin

Research output: Contribution to journalArticlepeer-review

214 Scopus citations

Abstract

A rapid and highly efficient strategy for introducing C into g-C 3 N 4 involves copolymerizing π-electron-rich barbituric acid with melamine via a facile microwave-assisted heating, thereby eliminating the issues in conventional electric furnace heating, such as the severe volatilization, owing to the mismatch of the sublimation temperatures of barbituric acid and melamine. The g-C 3 N 4 catalyst after optimizing the C-doping content actively generates increased amounts of H 2 under visible light exposure with the highest H 2 generation rate of 25.0 μmol h −1 , which is nearly 20 times above that using g-C 3 N 4 produced by conventional electric furnace heating of two identical monomers (1.3 μmol h −1 ). As such, the microwave-assisted heating strategy may stand out as an extremely simple route to incorporating π-electrons into g-C 3 N 4 with markedly improved photocatalytic performance.

Original languageEnglish
Pages (from-to)1985-1989
Number of pages5
JournalAngewandte Chemie - International Edition
Volume58
Issue number7
DOIs
StatePublished - 11 Feb 2019

Bibliographical note

Funding Information:
This work was financially supported by the National Natural Science Foundation of China (51872003, 51572003).

Publisher Copyright:
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

  • carbon nitride
  • microwaves
  • photocatalysis
  • π-electrons

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