Promoting the photocatalytic NO oxidation activity of hierarchical porous g-C3N4 by introduction of nitrogen vacancies and charge channels

Xia, Yang; Yang, Heng; Ho, Wingkei; Zhu, Bicheng; Yu, Jiaguo

doi:10.1016/j.apcatb.2023.123604

Cited by 26 publications

(1 citation statement)

References 58 publications

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“…Nitrogen oxides (NOx), recognized as particularly harmful pollutants, are responsible for numerous environmental issues such as photochemical smog, haze, and acid rain. When compared with conventional approaches such as physicochemical adsorption, selective catalytic reduction, and plasma technology, which consume depletable resources and generate secondary pollution, photocatalysis driven from solar energy is a prospective candidate for abatement of NOx, due to its cost-effective, mild conditions and environmentally friendly process. − It is essential to recognize that the efficacy of photocatalysis is intimately linked to the structure and properties of the catalyst, making the selection of an appropriate photocatalyst imperative for the successful execution of photocatalytic NO removal. , …”

Section: Introductionmentioning

confidence: 99%

Bismuth MOF-Derived BiOI/Bi₅O₇I p-n Heterojunctions with Enhanced Charge Separation and Visible-Light Photocatalytic Performance

Geng,

Xie,

et al. 2024

J. Phys. Chem. C

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Given the environmental hazards posed by low-concentration NOx emissions, visible-light-driven photocatalytic technologies have been widely studied for the removal of NOx. Constrained by the insufficient light absorption range and rapid recombination of carriers of an individual photocatalyst, the construction of heterojunctions has emerged as a promising strategy to bolster photocatalytic reaction kinetics. However, traditional approaches for fabricating heterojunctions frequently result in interfaces that are loosely connected and poorly contacted, greatly limiting the photocatalytic performance of the heterojunctions. Therefore, in this research, a BiOI/Bi 5 O 7 I p-n heterojunction was successfully constructed through an in situ phase transformation approach, demonstrating exceptional photocatalytic performance in the purification of NO under visible light irradiation. Benefiting from the interfacial electric field formed at the tightly formed heterojunction interface, significant suppression of carrier recombination and improved separation efficiency were achieved, as evidenced by both in situ DRIFTS and theoretical calculations. This strategy can also inspire the utilization of in situ heterojunction construction to modulate the electronic structure of conventional bismuth-based semiconductors, enhance charge transfer at the interface, and improve the photocatalytic activity.

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Section: Introductionmentioning

confidence: 99%

Bismuth MOF-Derived BiOI/Bi₅O₇I p-n Heterojunctions with Enhanced Charge Separation and Visible-Light Photocatalytic Performance

Geng,

Xie,

et al. 2024

J. Phys. Chem. C

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Engineering of Graphitic Carbon Nitride (g‐C₃N₄) Based Photocatalysts for Atmospheric Protection: Modification Strategies, Recent Progress, and Application Challenges

Zhong,

Huang,

Yao

et al. 2024

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Graphitic carbon nitride (g‐C3N4) is a prominent photocatalyst that has attracted substantial interest in the field of photocatalytic environmental remediation due to the low cost of fabrication, robust chemical structure, adaptable and tunable energy bandgaps, superior photoelectrochemical properties, cost‐effective feedstocks, and distinctive framework. Nonetheless, the practical application of bulk g‐C3N4 in the photocatalysis field is limited by the fast recombination of photogenerated e−‐h+ pairs, insufficient surface‐active sites, and restricted redox capacity. Consequently, a great deal of research has been devoted to solving these scientific challenges for large‐scale applications. This review concisely presents the latest advancements in g‐C3N4‐based photocatalyst modification strategies, and offers a comprehensive analysis of the benefits and preparation techniques for each strategy. It aims to articulate the complex relationship between theory, microstructure, and activities of g‐C3N4‐based photocatalysts for atmospheric protection. Finally, both the challenges and opportunities for the development of g‐C3N4‐based photocatalysts are highlighted. It is highly believed that this special review will provide new insight into the synthesis, modification, and broadening of g‐C3N4‐based photocatalysts for atmospheric protection.

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Treating NOx gas Pollution by Visible Light Photocatalytic Reaction of S-doped TiO2 Nanotubes

Le,

Cao,

Doan

et al. 2024

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Promoting the photocatalytic NO oxidation activity of hierarchical porous g-C3N4 by introduction of nitrogen vacancies and charge channels

Cited by 26 publications

References 58 publications

Bismuth MOF-Derived BiOI/Bi₅O₇I p-n Heterojunctions with Enhanced Charge Separation and Visible-Light Photocatalytic Performance

Bismuth MOF-Derived BiOI/Bi₅O₇I p-n Heterojunctions with Enhanced Charge Separation and Visible-Light Photocatalytic Performance

Engineering of Graphitic Carbon Nitride (g‐C₃N₄) Based Photocatalysts for Atmospheric Protection: Modification Strategies, Recent Progress, and Application Challenges

Treating NOx gas Pollution by Visible Light Photocatalytic Reaction of S-doped TiO2 Nanotubes

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Promoting the photocatalytic NO oxidation activity of hierarchical porous g-C3N4 by introduction of nitrogen vacancies and charge channels

Cited by 26 publications

References 58 publications

Bismuth MOF-Derived BiOI/Bi5O7I p-n Heterojunctions with Enhanced Charge Separation and Visible-Light Photocatalytic Performance

Bismuth MOF-Derived BiOI/Bi5O7I p-n Heterojunctions with Enhanced Charge Separation and Visible-Light Photocatalytic Performance

Engineering of Graphitic Carbon Nitride (g‐C3N4) Based Photocatalysts for Atmospheric Protection: Modification Strategies, Recent Progress, and Application Challenges

Treating NOx gas Pollution by Visible Light Photocatalytic Reaction of S-doped TiO2 Nanotubes

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Product

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Bismuth MOF-Derived BiOI/Bi₅O₇I p-n Heterojunctions with Enhanced Charge Separation and Visible-Light Photocatalytic Performance

Bismuth MOF-Derived BiOI/Bi₅O₇I p-n Heterojunctions with Enhanced Charge Separation and Visible-Light Photocatalytic Performance

Engineering of Graphitic Carbon Nitride (g‐C₃N₄) Based Photocatalysts for Atmospheric Protection: Modification Strategies, Recent Progress, and Application Challenges