Ultrathin g-C3N4 with enriched surface carbon vacancies enables highly efficient photocatalytic nitrogen fixation

Zhang, Yi; Yin, Sheng; Ding, Penghui; Zhao, Junze; Gu, Kaizhi; Chen, Xiaoliu; Li, Huaming; Xia, Jiexiang

doi:10.1016/j.jcis.2019.06.012

Cited by 132 publications

(55 citation statements)

References 66 publications

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“…have prepared the carbon vacancy enriched ultrathin g‐C 3 N 4 for N 2 fixation, which showed 84.0 µmol h −1 g −1 NH 3 production from pure water. [ 124 ] The other nitride material reported for this reaction is GaN. Li et al.…”

Section: Vacancy Engineered Materials For Photocatalytic H2 Evolution and N2 Fixationmentioning

confidence: 99%

Vacancy Engineering in Semiconductor Photocatalysts: Implications in Hydrogen Evolution and Nitrogen Fixation Applications

Kumar

Krishnan

2021

Adv Funct Materials

222

143

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It is a well‐known fact that the pronounced photogenerated charge recombination and poor light absorption are the main bottlenecks of photocatalysis applications. The conventional approaches to address these problems involve bandgap engineering and suppression of charge recombination after light irradiation, which results in an enhancement in the photocatalytic performance of the materials. However, the most essential aspect of surface modification to engineer active sites on the catalyst surface is generally not given much importance. Contrary to this, defect engineering is another approach by which the optical, charge separation, and surface properties of the photocatalytic materials can be tuned. In this review article, the effect of the introduction of vacancies on the photocatalytic properties of selected semiconductor materials, viz., metal oxides, perovskite oxides, metal sulfides, oxyhalides, and nitrides is comprehensively summarized. The engineering of vacancies in these materials not only improves their optical and charge transfer properties but also affects the surface properties, which are helpful in the adsorption of the reactants on catalyst surface. Herein, photocatalytic hydrogen evolution and nitrogen fixation applications of vacancy engineered materials are discussed in detail along with the current trends, scalability requirements, and rigorous experimental protocols.

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Section: Vacancy Engineered Materials For Photocatalytic H2 Evolution and N2 Fixationmentioning

confidence: 99%

Vacancy Engineering in Semiconductor Photocatalysts: Implications in Hydrogen Evolution and Nitrogen Fixation Applications

Kumar

Krishnan

2021

Adv Funct Materials

222

143

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“…In addition, He and his coworkers employed a selemplated strategy to prepare In 2 S 3 nanotubes in nitrogen Fig. 10 Nitrogen absorption-desorption isotherm of (a) bulk g-C 3 N 4 and (b) g-C 3 N 4 -V. 41 Copyright 2019, Elsevier. atmosphere.…”

Section: Oxygen Vacancymentioning

confidence: 99%

Recent advances in photocatalytic nitrogen fixation: from active sites to ammonia quantification methods

Huang

Gao

et al. 2021

RSC Adv.

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“…[31] In a practical operation, the fixation of nitrogen to ammonia is completed in a high-pressure synthetic tower. The nitrogen and hydrogen gases are first mixed and compressed into the converter chamber from the top, [32,33] pass the heat exchanger at the bottom to increase the gas temperature, and then enter the contact chamber where Fe-based catalysts drives the production of ammonia. Note that only part of the nitrogen reacts with hydrogen to produce ammonia.…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, the photocatalytic performance can be significantly improved with an increase in the OV concentration and separation rate of photogenerated electron-hole pairs. [12,32] This important breakthrough essentially opens a door of photocatalytic nitrogen fixation based on BiOX materials. [47,48] Thus far, it has been well-known that adsorption of N 2 onto the catalyst surface plays a key role in determining the photocatalytic efficiency of nitrogen fixation, [43,49] which can be facilitated by the formation of OVs.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress of the Design and Engineering of Bismuth Oxyhalides for Photocatalytic Nitrogen Fixation

Gao

Liu

et al. 2021

Adv Energy and Sustain Res

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Photocatalytic nitrogen fixation represents an effective technology for the artificial production of ammonia from atmospheric nitrogen, a critical step toward a sustainable economy. Bismuth oxyhalides (BiOX, X ¼ Cl, Br, and I) have emerged as viable catalysts for photocatalytic reduction of nitrogen into ammonia, due to their unique electronic structures and optical properties. Herein, the recent progress of BiOX-based photocatalysts for nitrogen fixation, with a focus on the reaction mechanism and pathways, materials preparation, and strategies of structural engineering for enhanced performance, is summarized. The article is concluded with a perspective where the promises and challenges of bismuthbased photocatalysts for nitrogen reduction to ammonia are highlighted, along with possible future research directions.

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Ultrathin g-C3N4 with enriched surface carbon vacancies enables highly efficient photocatalytic nitrogen fixation

Cited by 132 publications

References 66 publications

Vacancy Engineering in Semiconductor Photocatalysts: Implications in Hydrogen Evolution and Nitrogen Fixation Applications

Vacancy Engineering in Semiconductor Photocatalysts: Implications in Hydrogen Evolution and Nitrogen Fixation Applications

Recent advances in photocatalytic nitrogen fixation: from active sites to ammonia quantification methods

Recent Progress of the Design and Engineering of Bismuth Oxyhalides for Photocatalytic Nitrogen Fixation

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