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Author:

Yang, Decai (Yang, Decai.) | Ye, Qing (Ye, Qing.) | Qu, Chao (Qu, Chao.) | Meng, Fanwei (Meng, Fanwei.) | Wang, Lanyang (Wang, Lanyang.) | Li, Yongqi (Li, Yongqi.)

Indexed by:

EI Scopus SCIE

Abstract:

Developing photocatalytic hydrogen evolution technology based on graphitic carbon nitride (g-C3N4, CN) has emerged as a potential solution for the future energy shortage in recent years. Herein, carbon (C) and fluorine (F) co-doping graphitic carbon nitride nanosheets (CFCN) were synthesized via a one-pot co-thermal method without introducing any metal element. Exceptional hydrogen production activity (3.87 mmol/h/g) was achieved by CFCN under visible light irradiation, which was 4.2-fold increase compared to the pristine CN. It could be attributed to the large specific surface area (51.59 m(2)/g) and efficient mass transfer facilitated by the porous sheet-like morphology of CFCN. Additionally, the modification of the band structure and internal charge redistribution were investigated via density functional theory (DFT) calculations, which confirmed there was a unidirectional and fast electron transfer channel from N through the C-4 delocalized large pi bond to F. This creative research uncovered the pivotal role of F/C co-doping in enhancing photocatalytic hydrogen evolution efficacy, offering cutting-edge insights into the design of sustainable and eco-friendly photocatalysts based on metal-free CN.

Keyword:

F/C co-doping Delocalized large pi bond Graphitic carbon nitride Charge redistribution Photocatalytic hydrogen evolution

Author Community:

  • [ 1 ] [Yang, Decai]Beijing Univ Technol, Coll Environm Sci & Engn, Dept Environm Sci, Key Lab Beijing Reg Air Pollut Control, Beijing 100124, Peoples R China
  • [ 2 ] [Ye, Qing]Beijing Univ Technol, Coll Environm Sci & Engn, Dept Environm Sci, Key Lab Beijing Reg Air Pollut Control, Beijing 100124, Peoples R China
  • [ 3 ] [Qu, Chao]Beijing Univ Technol, Coll Environm Sci & Engn, Dept Environm Sci, Key Lab Beijing Reg Air Pollut Control, Beijing 100124, Peoples R China
  • [ 4 ] [Meng, Fanwei]Beijing Univ Technol, Coll Environm Sci & Engn, Dept Environm Sci, Key Lab Beijing Reg Air Pollut Control, Beijing 100124, Peoples R China
  • [ 5 ] [Wang, Lanyang]Beijing Univ Technol, Coll Environm Sci & Engn, Dept Environm Sci, Key Lab Beijing Reg Air Pollut Control, Beijing 100124, Peoples R China
  • [ 6 ] [Li, Yongqi]Beijing Univ Technol, Coll Environm Sci & Engn, Dept Environm Sci, Key Lab Beijing Reg Air Pollut Control, Beijing 100124, Peoples R China

Reprint Author's Address:

  • [Qu, Chao]Beijing Univ Technol, Coll Environm Sci & Engn, Dept Environm Sci, Key Lab Beijing Reg Air Pollut Control, Beijing 100124, Peoples R China;;

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Source :

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

ISSN: 0926-3373

Year: 2024

Volume: 361

2 2 . 1 0 0

JCR@2022

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 17

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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