화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.84, 305-314, April, 2020
DOI10.1016/j.jiec.2020.01.012  Export Citation
High-efficiency removal of phenol and coking wastewater via photocatalysis-Fenton synergy over a Fe-g-C3N4 graphene hydrogel 3D structure
Jinshan Hu1, Pengfei Zhang1, 2, Jifang Cui1, Weijia An1, †, Li Liu1, Yinghua Liang1, Qingbin Yang2, Hongjun Yang2, and Wenquan Cui1, †
  • 1College of Chemical Engineering, Hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic Materials, North China University of Science and Technology, Tangshan 063210, PR China
  • 2Tangshan Shougang Jingtang Xishan Coking Co., Ltd., Tangshan 063210, PR China
E-mail:,
To achieve rapid separation of electron-hole pairs and improve photocatalytic degradation activity, the Fe-g-C3N4 reduced graphene hydrogel (rGH/Fe-g-C3N4) with a 3D network structure was fabricated via the hydrothermal method. Using visible light irradiation, H2O2 was added to form a photocatalysis-Fenton synergy system. The results showed that the synergistic degradation rate constant of 10% rGH/Fe-g-C3N4 was 52% higher than that of the multiphase Fenton reaction and 1.5 times higher than that of the Fe-g-C3N4. In the seventh cycle, the catalytic efficiency was still as high as 86.9%. Based on the optimized conditions from phenol degradation, the system was further applied to coking wastewater treatment, and the degradation efficiency of TOC and COD in 60 min reached 66.3% and 68.1%, respectively. Such high and stable degradation performance was ascribed to the synergy effect of photocatalysis and Fenton. Because of the photogenerated electrons not only can promote the Fe3+/Fe2+ cycle, accelerate the decomposition of H2O2, but also can quickly transfer to graphene and directly decompose H2O2 to form ·OH. Thus, a large amount of ·OH were generated through the two different channels, which greatly improve the degradation efficiency. Furthermore, rGH/Fe-g-C3N4 can be regenerated using filters without the need for additional complicated processing. This work provides an effective strategy for the deep treatment of industrial wastewater.
Keywords:Fe-g-C3N4;Reduced graphene hydrogel;Photocatalysis-Fenton synergy
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