Citation: Yanan Liu, Liubo Ma, Congcong Shen, Xin Wang, Xiao Zhou, Zhiwei Zhao, Anwu Xu. Highly enhanced visible-light photocatalytic hydrogen evolution on g-C₃N₄ decorated with vopc through π-π interaction[J]. Chinese Journal of Catalysis, ;2019, 40(2): 168-176. doi: 10.1016/S1872-2067(18)63191-2 shu

Highly enhanced visible-light photocatalytic hydrogen evolution on g-C₃N₄ decorated with vopc through π-π interaction

Yanan Liu ^a,b, ,
Liubo Ma ^a ,
Congcong Shen ^a ,
Xin Wang ^a ,
Xiao Zhou ^a ,
Zhiwei Zhao ^a ,
Anwu Xu ^a

a Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry Physics, University of Science and Technology of China, Hefei 230026, Anhui, China;
b College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China

Received Date: 13 September 2018
Revised Date: 23 October 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (51572253, 21771171), Scientific Research Grant of Hefei National Synchrotron Radiation Laboratory (UN2017LHJJ), the Fundamental Research Funds for the Central Universities, and cooperation between NSFC and Netherlands Organization for Scientific Research (51561135011).

Photocatalytic H₂ evolution reactions on pristine graphitic carbon nitrides (g-C₃N₄), as a promising approach for converting solar energy to fuel, are attractive for tackling global energy concerns but still suffer from low efficiencies. In this article, we report a tractable approach to modifying g-C₃N₄ with vanadyl phthalocyanine (VOPc/CN) for efficient visible-light-driven hydrogen production. A non-covalent VOPc/CN hybrid photocatalyst formed via π-π stacking interactions between the two components, as confirmed by analysis of UV-vis absorption spectra. The VOPc/CN hybrid photocatalyst shows excellent visible-light-driven photocatalytic performance and good stability. Under optimal conditions, the corresponding H₂ evolution rate is nearly 6 times higher than that of pure g-C₃N₄. The role of VOPc in promoting hydrogen evolution activity was to extend the visible light absorption range and prevent the recombination of photoexcited electron-hole pairs effectively. It is expected that this facile modification method could be a new inspiration for the rational design and exploration of g-C₃N₄-based hybrid systems with strong light absorption and high-efficiency carrier separation.
- VOPc/g-C₃N₄,
- π-π Interaction,
- Visible light photocatalysis,
- Hydrogen evolution,
- Charge separation efficiency
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Highly enhanced visible-light photocatalytic hydrogen evolution on g-C3N4 decorated with vopc through π-π interaction

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Highly enhanced visible-light photocatalytic hydrogen evolution on g-C₃N₄ decorated with vopc through π-π interaction