3 years ago

Visible-light-driven photocatalytic H2O2 production on g-C3N4 loaded with CoP as a noble metal free cocatalyst

Yongdi Liu, Haijun Chen, Yulan Peng, Juying Lei, Jinlong Zhang, Lingzhi Wang
In this work, a composite catalyst combining CoP with g-C3N4 has been explored for the photocatalytic production of H2O2 under visible light irradiation. The composite catalyst was successfully fabricated by growth of CoP nanoparticles on the surface of g-C3N4. The CoP nanoparticles were well dispersed on the surface of g-C3N4 and could interact with g-C3N4 to make charge separation and electron transfer improved. The results of catalytic experiments showed that the composite catalyst had a superior catalytic activity as compared with pure CoP or g-C3N4 under visible light irradiation. The optimal catalyst with 1.76 wt% CoP loading amount exhibited the best photocatalytic efficiency with a H2O2 production of 140 uM in 2 h, which is about 4.6 and 23.3 times that of pure g-C3N4 and pure CoP, respectively. The possible mechanism on the visible-light-driven photocatalytic production of H2O2 was proposed. And the composite catalyst exhibited stable performance without obvious loss of catalytic activity after seven successive runs, showing a good application prospect for sustainable H2O2 production.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/ejic.201700930

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