Oxygen vacancy engineering of novel ultrathin Bi12O17Br2 nanosheets for boosting photocatalytic N2 reduction

Gao, Kaiyue; Zhang, Chengming; Zhang, Yi; Zhou, Xiaoyu; Gu, Shuai; Zhang, Kehua; Wang, Xiufang; Song, Xiaojie

doi:10.1016/j.jcis.2022.01.084

Cited by 52 publications

(21 citation statements)

References 46 publications

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Section: Oxygen Vacancy (O V )mentioning

confidence: 99%

“…A synergistic effect can be formed between oxygen vacancy and some unique material structures, which can further improve the photocatalytic efficiency. 77 Among them, a flake Bi 12 O 17 Br 2 with ultrathin nanostructure was successfully prepared by simple alkali treatment and a solvothermal method in the paper of Gao et al 34 The super-thin structure can provide a larger adsorption area for N 2 (Fig. 5a and b).…”

Section: Recent Catalyst Advances In Photocatalytic Nitrogen Fixationmentioning

confidence: 99%

“…The preparation methods of oxygen vacancies include the following: (1) heat treatment of polyols, NaOH and N 2 . 34,67,68,73 (2) The introduction of heteroatomic doping simultaneously generates oxygen vacancies. 91,92 (3) Ultraviolet photolysis.…”

Section: Recent Catalyst Advances In Photocatalytic Nitrogen Fixationmentioning

confidence: 99%

“…We introduce several basic mechanisms for the photocatalytic nitrogen xation reaction and then discuss some problems that exist in the photocatalytic nitrogen xation process. Aer that, we focus on some typical catalysts and their modication methods, such as surface vacancies, [33][34][35][36][37][38] element doping [39][40][41][42] and heterojunction modication, [43][44][45][46][47][48] etc. Finally, the prospects of efficient nitrogen-xing and photocatalytic nitrogen xation are discussed (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Fig. 5 (a) Transient photocurrent response; (b) EIS AC impedance spectrum and (c) TRF spectrum of ultrathin Vo-Bi 12 O 17 Br 2 and bulk Bi 12 O 17 Br 2 .Reused with permission 34. Copyright 2022, Elsevier.…”

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Structural design and control of photocatalytic nitrogen-fixing catalysts

Xia

et al. 2022

J. Mater. Chem. A

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Section: Oxygen Vacancy (O V )mentioning

confidence: 99%

Section: Recent Catalyst Advances In Photocatalytic Nitrogen Fixationmentioning

confidence: 99%

Section: Recent Catalyst Advances In Photocatalytic Nitrogen Fixationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Structural design and control of photocatalytic nitrogen-fixing catalysts

Xia

et al. 2022

J. Mater. Chem. A

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Unique Tubular BiOBr/g‐C₃N₄ Heterojunction with Efficient Separation of Charge Carriers for Photocatalytic Nitrogen Fixation

Gao

Zhang

Zhu

et al. 2023

Chemistry A European J

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The industrial ammonia synthesis process consumes a lot of energy and causes serious environmental pollution. As a sustainable approach for ammonia synthesis, photocatalytic nitrogen reduction employing water as the reducing agent has a lot of potential. A simple surfactant‐assisted solvothermal method is used to synthesize g‐C3N4 nanotubes with flower‐like spherical BiOBr grown inside and outside (BiOBr/g‐C3N4, BC). The hollow tubular structure realizes the full use of visible light by the multi‐scattering effect of light. Large surface areas and more active sites for N2 adsorption and activation are present in the distinctive spatially dispersed hierarchical structures. Particularly, the quick separation and transfer of electrons and holes are facilitated by the sandwich tubular heterojunctions and tight contact interface of BiOBr and g‐C3N4. The maximal NH3 generation rate of the BiOBr/g‐C3N4 composite catalysts can reach 255.04 μmol⋅ g−1⋅ h−1, and it is 13.9 and 5.8 times that of pure BiOBr and g‐C3N4. This work provides a novel method for designing and constructing unique heterojunctions for efficient photocatalytic nitrogen fixation.

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Modelling Photocatalytic N₂ Reduction to Ammonia: Where We Stand and Where We Are Going

Žibert,

Likozar,

Huš

2024

ChemSusChem

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Artificial ammonia synthesis via the Haber‐Bosch process is environmentally problematic due to the high energy consumption and corresponding CO2 emissions, produced during the reaction and before hand in hydrogen production upon methane steam reforming. Photocatalytic nitrogen fixation as a greener alternative to the conventional Haber‐Bosch process enables us to perform nitrogen reduction reaction (NRR) under mild conditions, harnessing light as the energy source. Herein, we systematically review first‐principles calculations used to determine the electronic/optical properties of photocatalysts, N2 adsorption and to expound possible NRR mechanisms. The most commonly studied photocatalysts for nitrogen fixation are usually modified with dopants, defects, co‐catalysts and Z‐scheme heterojunctions to prevent charge carrier recombination, improve charge separation efficiency and adjust a band gap to for utilizing a broader light spectrum. Most studies at the atomistic level of modeling are grounded upon DFT calculations, wholly foregoing excitation effects paramount in photocatalysis. Hence, there is a dire need to consider methods beyond DFT to study the excited state properties more accurately. Furthermore, a few studies have been examined, which include higher level kinetics and macroscale simulations. Ultimately, we show there is still ample room for improvement with regard to first principles calculations and their integration in multiscale models.

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Oxygen vacancy engineering of novel ultrathin Bi12O17Br2 nanosheets for boosting photocatalytic N2 reduction

Cited by 52 publications

References 46 publications

Structural design and control of photocatalytic nitrogen-fixing catalysts

Structural design and control of photocatalytic nitrogen-fixing catalysts

Unique Tubular BiOBr/g‐C₃N₄ Heterojunction with Efficient Separation of Charge Carriers for Photocatalytic Nitrogen Fixation

Modelling Photocatalytic N₂ Reduction to Ammonia: Where We Stand and Where We Are Going

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Oxygen vacancy engineering of novel ultrathin Bi12O17Br2 nanosheets for boosting photocatalytic N2 reduction

Cited by 52 publications

References 46 publications

Structural design and control of photocatalytic nitrogen-fixing catalysts

Structural design and control of photocatalytic nitrogen-fixing catalysts

Unique Tubular BiOBr/g‐C3N4 Heterojunction with Efficient Separation of Charge Carriers for Photocatalytic Nitrogen Fixation

Modelling Photocatalytic N2 Reduction to Ammonia: Where We Stand and Where We Are Going

Contact Info

Product

Resources

About

Unique Tubular BiOBr/g‐C₃N₄ Heterojunction with Efficient Separation of Charge Carriers for Photocatalytic Nitrogen Fixation

Modelling Photocatalytic N₂ Reduction to Ammonia: Where We Stand and Where We Are Going