Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 279, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.seppur.2021.119766
Keywords
Graphite phase carbon nitride; Polyethyleneimine; Photocatalysis degradation; Photocatalysis hydrogen production
Categories
Funding
- National Natural Science Foundation [22004047, 21878120, 21902060]
- Natural Science Foundation Project of Jilin Province [20180623042TC, YDZJ202101ZYTS073, YDZJ202101ZYTS078]
- Project of Jilin Province Development and Reform Commission [2021C036-7]
- Project of Education Department of Jilin Province [JJKH20191015KJ]
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An integrated CN photocatalyst with enhanced photocatalytic performance was successfully fabricated through thermal-induced copolymerization of PEI precursor with urea. The optimized photocatalyst showed efficient degradation of tetracycline and hydrogen production under visible light, providing a reference for developing simple, low-cost, and environmentally friendly CN photocatalysts to address energy crisis and environmental problems.
Graphite carbon nitride (CN) photocatalyst is deemed as a potential assistant to solve energy shortage and environmental pollution, thus plentiful researches have been devoting to improve its photocatalytic performance with simple and economic strategies. Herein, a tremella-like integrated CN photocatalyst with enhanced photocatalytic performance was fabricated via thermal-induce copolymerization of polyethylenimine (PEI) precursor with urea. The FTIR, SEM, TEM, XRD and XPS indicated that the PEI doped integrated CN photocatalyst (xPCN) was successfully constructed, and the optimized 32.5PCN photocatalyst can degrade 80% of tetracycline (3.18 times of pure CN) and produce hydrogen with the rate of 1223.44 mu mot h(-1) g(-1) (2.46 times of pure CN) under visible light and atmospheric pressure. The UV-vis DRS, PL, PCR, EIS, band gap analysis and reactive species evaluation were conducted to explain the potential enhanced mechanism of photocatalytic performance. The research may utilize as a reference for developing more simple, low-cost and environmental-friendly CN photocatalysts for solving energy crisis and environmental problems.
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