Citation: Nan Xiao, Songsong Li, Shuang Liu, Boran Xu, Yandong Li, Yangqin Gao, Lei Ge, Guiwu Lu. Novel PtPd alloy nanoparticle-decorated g-C₃N₄ nanosheets with enhanced photocatalytic activity for H₂ evolution under visible light irradiation[J]. Chinese Journal of Catalysis, ;2019, 40(3): 352-361. doi: 10.1016/S1872-2067(18)63180-8 shu

Novel PtPd alloy nanoparticle-decorated g-C₃N₄ nanosheets with enhanced photocatalytic activity for H₂ evolution under visible light irradiation

Nan Xiao ^a,b, ,
Songsong Li ^b ,
Shuang Liu ^b ,
Boran Xu ^b ,
Yandong Li ^b ,
Yangqin Gao ^b ,
Lei Ge ^a,b ,
Guiwu Lu ^b

a State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing, Beijing 102249, China;
b College of New Energy and Materials, China University of Petroleum Beijing, Beijing 102249, China

Received Date: 6 August 2018
Revised Date: 25 September 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (51572295, 21273285, 21003157), the Beijing Nova Program (2008B76), and the Science Foundation of China University of Petroleum Beijing (KYJJ2012-06-20 and 2462016YXBS05).

PtPd bimetallic alloy nanoparticle (NP)-modified graphitic carbon nitride (g-C₃N₄) nanosheet photocatalysts were synthesized via chemical deposition precipitation. Characterization of the photocatalytic H₂ evolution of the g-C₃N₄ nanosheets shows that it was significantly enhanced when PtPd alloy NPs were introduced as a co-catalyst. The 0.2 wt% PtPd/g-C₃N₄ composite photocatalyst gave a maximum H₂ production rate of 1600.8 μmol g^-1 h^-1. Furthermore, when K₂HPO₄ was added to the reaction system, the H₂ production rate increased to 2885.0 μmol g^-1 h^-1. The PtPd/g-C₃N₄ photocatalyst showed satisfactory photocatalytic stability and was able to maintain most of its photocatalytic activity after four experimental photocatalytic cycles. In addition, a possible mechanism for the enhanced photocatalytic activity was proposed and verified by various photoelectric techniques. These results demonstrate that the synergistic effect between PtPd and g-C₃N₄ helps to greatly improve the photocatalytic activity of the composite photocatalyst.
- g-C₃N₄ nanosheets,
- PtPd alloy nanoparticles,
- H₂ evolution,
- Photocatalysis
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通讯作者: 陈斌, bchen63@163.com

Novel PtPd alloy nanoparticle-decorated g-C₃N₄ nanosheets with enhanced photocatalytic activity for H₂ evolution under visible light irradiation