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One-step thermal polymerization synthesis of nitrogen-rich g-C(3)N(4) nanosheets enhances photocatalytic redox activity

Graphitic carbon nitride (g-C(3)N(4)) has attracted enormous attention as a visible-light-responsive carbon-based semiconductor photocatalyst. However, fast charge recombination seriously limits its application. Therefore, it is urgent to modify the electronic structure of g-C(3)N(4) to obtain excel...

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Autores principales: Peng, Leyu, Liu, Jiaxi, Li, Ziyuan, Jing, Yifan, Zou, Yongjin, Chu, Hailiang, Xu, Fen, Sun, Lixian, Huang, Pengru
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9682490/
https://www.ncbi.nlm.nih.gov/pubmed/36505684
http://dx.doi.org/10.1039/d2ra05867g
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author Peng, Leyu
Liu, Jiaxi
Li, Ziyuan
Jing, Yifan
Zou, Yongjin
Chu, Hailiang
Xu, Fen
Sun, Lixian
Huang, Pengru
author_facet Peng, Leyu
Liu, Jiaxi
Li, Ziyuan
Jing, Yifan
Zou, Yongjin
Chu, Hailiang
Xu, Fen
Sun, Lixian
Huang, Pengru
author_sort Peng, Leyu
collection PubMed
description Graphitic carbon nitride (g-C(3)N(4)) has attracted enormous attention as a visible-light-responsive carbon-based semiconductor photocatalyst. However, fast charge recombination seriously limits its application. Therefore, it is urgent to modify the electronic structure of g-C(3)N(4) to obtain excellent photocatalytic activity. Herein, we reported a one-step thermal polymerization synthesis of nitrogen-rich g-C(3)N(4) nanosheets. Benefiting from the N self-doping and the ultrathin structure, the optimal CN-70 exhibits its excellent performance. A 6.7 times increased degradation rate of rhodamine B (K = 0.06274 min(−1)), furthermore, the hydrogen evolution efficiency also reached 2326.24 μmol h(−1) g(−1) (λ > 420 nm). Based on a series of characterizations and DFT calculations, we demonstrated that the N self-doping g-C(3)N(4) can significantly introduce midgap states between the valence band and conduction band, which is more conducive to the efficient separation of photogenerated carriers. Our work provides a facile and efficient method for self-atom doping into g-C(3)N(4), providing a new pathway for efficient photocatalysts.
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spelling pubmed-96824902022-12-08 One-step thermal polymerization synthesis of nitrogen-rich g-C(3)N(4) nanosheets enhances photocatalytic redox activity Peng, Leyu Liu, Jiaxi Li, Ziyuan Jing, Yifan Zou, Yongjin Chu, Hailiang Xu, Fen Sun, Lixian Huang, Pengru RSC Adv Chemistry Graphitic carbon nitride (g-C(3)N(4)) has attracted enormous attention as a visible-light-responsive carbon-based semiconductor photocatalyst. However, fast charge recombination seriously limits its application. Therefore, it is urgent to modify the electronic structure of g-C(3)N(4) to obtain excellent photocatalytic activity. Herein, we reported a one-step thermal polymerization synthesis of nitrogen-rich g-C(3)N(4) nanosheets. Benefiting from the N self-doping and the ultrathin structure, the optimal CN-70 exhibits its excellent performance. A 6.7 times increased degradation rate of rhodamine B (K = 0.06274 min(−1)), furthermore, the hydrogen evolution efficiency also reached 2326.24 μmol h(−1) g(−1) (λ > 420 nm). Based on a series of characterizations and DFT calculations, we demonstrated that the N self-doping g-C(3)N(4) can significantly introduce midgap states between the valence band and conduction band, which is more conducive to the efficient separation of photogenerated carriers. Our work provides a facile and efficient method for self-atom doping into g-C(3)N(4), providing a new pathway for efficient photocatalysts. The Royal Society of Chemistry 2022-11-23 /pmc/articles/PMC9682490/ /pubmed/36505684 http://dx.doi.org/10.1039/d2ra05867g Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Peng, Leyu
Liu, Jiaxi
Li, Ziyuan
Jing, Yifan
Zou, Yongjin
Chu, Hailiang
Xu, Fen
Sun, Lixian
Huang, Pengru
One-step thermal polymerization synthesis of nitrogen-rich g-C(3)N(4) nanosheets enhances photocatalytic redox activity
title One-step thermal polymerization synthesis of nitrogen-rich g-C(3)N(4) nanosheets enhances photocatalytic redox activity
title_full One-step thermal polymerization synthesis of nitrogen-rich g-C(3)N(4) nanosheets enhances photocatalytic redox activity
title_fullStr One-step thermal polymerization synthesis of nitrogen-rich g-C(3)N(4) nanosheets enhances photocatalytic redox activity
title_full_unstemmed One-step thermal polymerization synthesis of nitrogen-rich g-C(3)N(4) nanosheets enhances photocatalytic redox activity
title_short One-step thermal polymerization synthesis of nitrogen-rich g-C(3)N(4) nanosheets enhances photocatalytic redox activity
title_sort one-step thermal polymerization synthesis of nitrogen-rich g-c(3)n(4) nanosheets enhances photocatalytic redox activity
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9682490/
https://www.ncbi.nlm.nih.gov/pubmed/36505684
http://dx.doi.org/10.1039/d2ra05867g
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