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Cited by 160

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Amorphous Carbon Nitride with Three Coordinate Nitrogen (N3C) Vacancies for Exceptional NOx Abatement in Visible Light

Duan, Youyu, Wang, Yang, Gan, Liyong, Meng, Jiazhi, Feng, Yajie, Wang, Kaiwen, Zhou, Kai, Wang, Cong, Han, Xiaodong, Zhou, Xiaoyuan·2021·Advanced Energy Materials

Abstract

Over the past several decades, much effort has been applied to atmospheric nitrogen oxide (NOx) abatement. The current techniques require high energy consumption and result in secondary pollution. Particularly, the removal of low dose (<200 ppm) of NOx has been very challenging. Though graphitic carbon nitride (g‐CN), an eco‐friendly and sustainable material was tried as a promising metal‐free photocatalyst for NOx abatement. Herein, a one‐step, energy efficient calcination approach is developed to prepare amorphous carbon nitride (ACN) with N3 C‐site vacancies. The visible‐light responsive range is expanded and the activation barrier of NO triple bonds is sharply decreased by one order of magnitude; 0.19 eV when compared to the 2.22 eV of g‐CN. These modifications allow the NOx removal efficiency of ACN to reach 57.1% which is among the highest in visible light. The unique N3 C‐site vacancies are well maintained after photocatalytic NO oxidation, which shows an exceptional structural stability. This boosts the generation of singlet oxygen (1 O 2) and superoxide radical (•O 2−) for complete NO removal. This study sheds light on the active site design and photocatalytic performance enhancement of g‐CN based materials by vacancy engineering.

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Metadata

Authors
Duan, Y., Wang, Y., Gan, L., Meng, J., Feng, Y., Wang, K., Zhou, K., Wang, C., Han, X., & Zhou, X.
Venue
Advanced Energy Materials
Publisher
Wiley
Published
2021-03-30
Volume
11
Issue
19
ISSN
  • 1614-6832 (ISSN-L)
  • 1614-6840
OpenAlex
W3143864460
Cited by
160
References
3
FWCI
5.41
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Amorphous Carbon Nitride with Three Coordinate Nitrogen (N3C) Vacancies for Exceptional NOx Abatement in Visible Light. https://app.cochat.ai/papers/10.1002/aenm.202004001
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Duan, Y., Wang, Y., Gan, L., Meng, J., Feng, Y., Wang, K., Zhou, K., Wang, C., Han, X., & Zhou, X. (2021). Amorphous Carbon Nitride with Three Coordinate Nitrogen (N3C) Vacancies for Exceptional NOx Abatement in Visible Light. Advanced Energy Materials. https://doi.org/10.1002/aenm.202004001

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