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Author:

Zhao, Fuwang (Zhao, Fuwang.) | Yang, Yanling (Yang, Yanling.) (Scholars:杨艳玲) | Ji, Siyang (Ji, Siyang.) | Yu, Rui (Yu, Rui.) | Li, Xing (Li, Xing.) | Zhou, Zhiwei (Zhou, Zhiwei.)

Indexed by:

Scopus SCIE

Abstract:

A photo-Fenton catalyst Fe-carbon nitride (g-C3N4)/reduced graphene oxide (rGO) (labeled as FNGO) was prepared via two-step calcination thermal polymerization. rGO as a carrier of Fe-g-C3N4 accelerated the charge transfer and improved the reduction of Fe (III) as compared those of the binary Fe-g-C3N4 catalyst. The FNGO catalyst maintained a high surface area of 264.7 m2/g and its charge transfer rate was 2.77 times higher than Feg-C3N4. The decreasing transient photocurrent and increasing electrode resistance of FNGO, Fe-g-C3N4 and gC3N4 confirm the positive synergistic effect of Fe-N coordination and rGO in charge transfer. Under the synergistic of visible light irradiation and H2O2, the excellent degradation performance of FNGO towards rhodamine B was achieved (95.3 % removal) at Fe-doping content of 10 wt%, rGO loading content of 0.5 % and H2O2 addition of 1.5 mM. Hydroxyl radicals played a dominant role in the photocatalysis-Fenton system, which was related to the coordination of Fe-N, the carrier off-domain of rGO, and the Fe (III)/Fe (II) cycle promoted by photogenerated electron and superoxide radicals. The FNGO had a high stability, a wide pH adaptation (3- 11) and a low Fe-leaching. This novel ternary light-driven photo-Fenton catalyst of FNGO enabled efficient decontamination during advanced treatment of wastewater.

Keyword:

Fe (III)/Fe (II) cycle Visible light photocatalysis Photo-Fenton Fe-N coordination Charge transfer

Author Community:

  • [ 1 ] [Zhao, Fuwang]Zhong Yuan Univ Technol, Zhengzhou 450007, Peoples R China
  • [ 2 ] [Yang, Yanling]Beijing Univ Technol, Coll Architecture & Civil Engn, Fac Urban Construct, Beijing 100124, Peoples R China
  • [ 3 ] [Ji, Siyang]Beijing Univ Technol, Coll Architecture & Civil Engn, Fac Urban Construct, Beijing 100124, Peoples R China
  • [ 4 ] [Yu, Rui]Beijing Univ Technol, Coll Architecture & Civil Engn, Fac Urban Construct, Beijing 100124, Peoples R China
  • [ 5 ] [Li, Xing]Beijing Univ Technol, Coll Architecture & Civil Engn, Fac Urban Construct, Beijing 100124, Peoples R China
  • [ 6 ] [Zhou, Zhiwei]Beijing Univ Technol, Coll Architecture & Civil Engn, Fac Urban Construct, Beijing 100124, Peoples R China

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Source :

JOURNAL OF WATER PROCESS ENGINEERING

ISSN: 2214-7144

Year: 2023

Volume: 55

7 . 0 0 0

JCR@2022

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 15

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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