Citation: Zong Li, Yongning Ma, Xiaoyun Hu, Enzhou Liu, Jun Fan. Enhanced photocatalytic H₂ production over dual-cocatalyst-modified g-C₃N₄ heterojunctions[J]. Chinese Journal of Catalysis, ;2019, 40(3): 434-445. doi: 10.1016/S1872-2067(18)63189-4 shu

Enhanced photocatalytic H₂ production over dual-cocatalyst-modified g-C₃N₄ heterojunctions

Zong Li ^a, ,
Yongning Ma ^a ,
Xiaoyun Hu ^b ,
Enzhou Liu ^a,b,c ,
Jun Fan ^a

a School of Chemical Engineering, Northwest University, Xi'an 710069, Shaanxi, China;
b School of Physics, Northwest University, Xi'an 710069, Shaanxi, China;
c Institute of Modern Physics, Northwest University, Xi'an 710069, Shaanxi, China

Received Date: 30 August 2018
Revised Date: 13 October 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (21676213, 21476183, 51372201), the China Postdoctoral Science Foundation (2016M600809), and the Natural Science Basic Research Plan in Shaanxi Province of China (2017JM2026).

Ag nanoparticles (NPs) were deposited on the surface of g-C₃N₄ (CN) by an in situ calcination method. NiS was successfully loaded onto the composites by a hydrothermal method. The results showed that the 10 wt%-NiS/1.0 wt%-Ag/CN composite exhibits excellent photocatalytic H₂ generation performance under solar-light irradiation. An H₂ production rate of 9.728 mmol·g^-1·h^-1 was achieved, which is 10.82-, 3.45-, and 2.77-times higher than those of pure g-C₃N₄, 10 wt%-NiS/CN, and 1.0 wt%-Ag/CN composites, respectively. This enhanced photocatalytic H₂ generation can be ascribed to the co-decoration of Ag and NiS on the surface of g-C₃N₄, which efficiently improves light harvesting capacity, photogenerated charge carrier separation, and photocatalytic H₂ production kinetics. Thus, this study demonstrates an effective strategy for constructing excellent g-C₃N₄-related composite photocatalysts for H₂ production by using different co-catalysts.
- Photocatalysis,
- Photocatalytic H₂ generation,
- g-C₃N₄,
- Ag,
- NiS
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Enhanced photocatalytic H₂ production over dual-cocatalyst-modified g-C₃N₄ heterojunctions