Citation: Zhao Mo, Hui Xu, Zhigang Chen, Xiaojie She, Yanhua Song, Pengcheng Yan, Yuanguo Xu, Yucheng Lei, Shouqi Yuan, Huaming Li. Gold/monolayer graphitic carbon nitride plasmonic photocatalyst for ultrafast electron transfer in solar-to-hydrogen energy conversion[J]. Chinese Journal of Catalysis, ;2018, 39(4): 760-770. doi: 10.1016/S1872-2067(17)62978-4 shu

Gold/monolayer graphitic carbon nitride plasmonic photocatalyst for ultrafast electron transfer in solar-to-hydrogen energy conversion

a School of Materials Science & Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, Jiangsu, China;
b School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China

Received Date: 30 November 2017
Revised Date: 31 December 2017

Fund Project: This work was supported by the National Natural Science Foundation of China (21476097, 21776118), the Six Talent Peaks Project in Jiangsu Province (2014-JNHB-014), the Natural Science Foundation of Jiangsu Province (BK20161363), the Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX17-1769), and the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.

Gold (Au) plasmonic nanoparticles were grown evenly on monolayer graphitic carbon nitride (g-C₃N₄) nanosheets via a facile oil-bath method. The photocatalytic activity of the Au/monolayer g-C₃N₄ composites under visible light was evaluated by photocatalytic hydrogen evolution and environmental treatment. All of the Au/monolayer g-C₃N₄ composites showed better photocatalytic performance than that of monolayer g-C₃N₄ and the 1% Au/monolayer g-C₃N₄ composite displayed the highest photocatalytic hydrogen evolution rate of the samples. The remarkable photocatalytic activity was attributed largely to the successful introduction of Au plasmonic nanoparticles, which led to the surface plasmon resonance (SPR) effect. The SPR effect enhanced the efficiency of light harvesting and induced an efficient hot electron transfer process. The hot electrons were injected from the Au plasmonic nanoparticles into the conduction band of monolayer g-C₃N₄. Thus, the Au/monolayer g-C₃N₄ composites possessed higher migration and separation efficiencies and lower recombination probability of photogenerated electron-hole pairs than those of monolayer g-C₃N₄. A photocatalytic mechanism for the composites was also proposed.
- Monolayer g-C₃N₄,
- Au plasmonic nanoparticle,
- Photocatalytic hydrogen evolution,
- Hot electron,
- Au/monolayer g-C₃N₄
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