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Author:

Che, Haibing (Che, Haibing.) | Hu, Peng (Hu, Peng.) | Wang, Jinshu (Wang, Jinshu.) (Scholars:王金淑) | Li, Yongli (Li, Yongli.) | Zhou, Wenyuan (Zhou, Wenyuan.) | Chen, Xiaobo (Chen, Xiaobo.)

Indexed by:

EI Scopus SCIE

Abstract:

In this work, a synergistic strategy integrated elemental doping and defect engineering has been developed to modulate the electronic and bandgap structure of g-C3N4 by controlling its conjugated aromatic system. Experimental analysis and theoretical calculations confirm that the generation of imbalanced spatial distributions of charge carriers not only greatly increases the pi-electron availability, but also decreases the energy barrier for hydrogen adsorption due to the synergistic effect of the high valence electron of the W dopant and the decreased electronegativity by two-coordinated nitrogen defects, which strengthens the charge transfer efficiency and favors the light capturing capability. The combined benefits of the electronic, optical and textural modification lead to a significant improvement of photocatalytic activity of 3.3 mmol h(-1) g(-1) for hydrogen evolution under l > 400 nm light irradiation, about twentyfold enhancement than that of pristine g-C3N4. Such proposed synergistic strategy provides a promising route to promote the performance of g-C3N4 for potential applications in solar energy conversion. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Keyword:

pi-electron Carbon nitride Hydrogen evolution Synergistic effect Photocatalysis

Author Community:

  • [ 1 ] [Che, Haibing]Beijing Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China
  • [ 2 ] [Hu, Peng]Beijing Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China
  • [ 3 ] [Wang, Jinshu]Beijing Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China
  • [ 4 ] [Li, Yongli]Beijing Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China
  • [ 5 ] [Zhou, Wenyuan]Beijing Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China
  • [ 6 ] [Che, Haibing]Univ Missouri, Dept Chem, Kansas City, MO 64110 USA
  • [ 7 ] [Chen, Xiaobo]Univ Missouri, Dept Chem, Kansas City, MO 64110 USA

Reprint Author's Address:

  • 王金淑

    [Hu, Peng]Beijing Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China;;[Wang, Jinshu]Beijing Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China;;[Chen, Xiaobo]Univ Missouri, Dept Chem, Kansas City, MO 64110 USA

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Source :

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

ISSN: 0360-3199

Year: 2021

Issue: 12

Volume: 46

Page: 8486-8496

7 . 2 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:87

JCR Journal Grade:2

Cited Count:

WoS CC Cited Count: 9

SCOPUS Cited Count: 10

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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