Influence of B-atom in g-C3N4 matrix to enhance the photocatalytic dinitrogen to ammonia conversion

Dhanaraman, Esakkinaveen; Verma, Atul; Anand, Pandiyarajan; Fu, Yen-Pei

doi:10.1016/j.jece.2023.111323

Cited by 5 publications

(1 citation statement)

References 78 publications

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“…The peak at 284.52 eV was designated to C‐H species, and the peak at 286.27 eV was ascribed to the methoxy group from methanol oxidation (Figure S9b, Supporting Information). [ 37,38 ]…”

Section: Resultsmentioning

confidence: 99%

Bi₂WO₆ Incorporation of g‐C₃N₄ to Enhance the Photocatalytic N₂ Reduction Reaction and Antibiotic Pollutants Removal

Dhanaraman,

Verma,

Chen

et al. 2024

Solar RRL

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Synthesis of ammonia from photocatalytic N2 reduction is challenging due to the fast recombination of electron‐hole pairs and the low selectivity of N2 on catalysts. This can be addressed by creating heterojunctions to separate the photogenerated carriers adequately. In this regard, we synthesized BW/g‐C3N4 and varied the weight percentage of g‐C3N4. The best photocatalytic activity for N2 reduction reaction (N2RR) was achieved with a ratio of BW/gC3N4 in 3.5:2 ratio, deemed to be the optimized heterojunction. N2‐temperature programmed desorption analysis showed outstanding chemisorption of N2 adsorbed on the BW/g‐C3N4 surface compared to pristine g‐C3N4 and BW. Additionally, forming a heterojunction enhanced the charge transfer process and well‐separated electron‐hole pairs, significantly boosting the water oxidation process on the catalytic surface. Photoelectrochemical analysis revealed that BW/g‐C3N4 exhibits the shortest hole relaxation lifetime and higher current density than its pristine counterparts. The robust contact between g‐C3N4 and BW reduced the work function of BW/g‐C3N4 based on ultraviolet photoelectron spectroscopy data. Ammonia production with the optimized BW/gC3N4 3.5:2 was 5.3 and 2.1 times higher than pure g‐C3N4 and Bi2WO6, respectively. Meanwhile, BW/g‐C3N4 demonstrates excellent photocatalytic activity towards antibiotic pollutant degradation as well. After 150 minutes of visible light irradiation, the removal of 94% ciprofloxacin (CIP) was observed. Finally, a possible mechanism is proposed for photocatalytic N2RR and CIP degradation.TOC: The distinctive feature of the Bi2WO6/g‐C3N4 hybrid is its innovative combination of Bi2WO6/g‐C3N4, creating a specialized interface that maximizes visible light absorption, enhances charge separation, and facilitates both N2 reduction reaction and pollutant degradation, and making a promising material for sustainable environmental application.This article is protected by copyright. All rights reserved.

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“…The peak at 284.52 eV was designated to C‐H species, and the peak at 286.27 eV was ascribed to the methoxy group from methanol oxidation (Figure S9b, Supporting Information). [ 37,38 ]…”

Section: Resultsmentioning

confidence: 99%

Bi₂WO₆ Incorporation of g‐C₃N₄ to Enhance the Photocatalytic N₂ Reduction Reaction and Antibiotic Pollutants Removal

Dhanaraman,

Verma,

Chen

et al. 2024

Solar RRL

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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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CxNy-based materials as gas sensors: Structure, performance, mechanism and perspective

Chen,

Zhang,

et al. 2024

Coordination Chemistry Reviews

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Influence of B-atom in g-C3N4 matrix to enhance the photocatalytic dinitrogen to ammonia conversion

Cited by 5 publications

References 78 publications

Bi₂WO₆ Incorporation of g‐C₃N₄ to Enhance the Photocatalytic N₂ Reduction Reaction and Antibiotic Pollutants Removal

Bi₂WO₆ Incorporation of g‐C₃N₄ to Enhance the Photocatalytic N₂ Reduction Reaction and Antibiotic Pollutants Removal

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

CxNy-based materials as gas sensors: Structure, performance, mechanism and perspective

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Influence of B-atom in g-C3N4 matrix to enhance the photocatalytic dinitrogen to ammonia conversion

Cited by 5 publications

References 78 publications

Bi2WO6 Incorporation of g‐C3N4 to Enhance the Photocatalytic N2 Reduction Reaction and Antibiotic Pollutants Removal

Bi2WO6 Incorporation of g‐C3N4 to Enhance the Photocatalytic N2 Reduction Reaction and Antibiotic Pollutants Removal

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

CxNy-based materials as gas sensors: Structure, performance, mechanism and perspective

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Product

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Bi₂WO₆ Incorporation of g‐C₃N₄ to Enhance the Photocatalytic N₂ Reduction Reaction and Antibiotic Pollutants Removal

Bi₂WO₆ Incorporation of g‐C₃N₄ to Enhance the Photocatalytic N₂ Reduction Reaction and Antibiotic Pollutants Removal

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