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

Chemistry - A European Journal, Год журнала: 2023, Номер 29(35)

Опубликована: Март 30, 2023

The industrial ammonia synthesis process consumes a lot of energy and causes serious environmental pollution. As sustainable approach for synthesis, photocatalytic nitrogen reduction employing water as the reducing agent has potential. A simple surfactant-assisted solvothermal method is used to synthesize g-C3 N4 nanotubes with flower-like spherical BiOBr grown inside outside (BiOBr/g-C3 , BC). hollow tubular structure realizes full use visible light by multi-scattering effect light. Large surface areas more active sites N2 adsorption activation are present in distinctive spatially dispersed hierarchical structures. Particularly, quick separation transfer electrons holes facilitated sandwich heterojunctions tight contact interface . maximal NH3 generation rate BiOBr/g-C3 composite catalysts can reach 255.04 μmol⋅ g-1 ⋅ h-1 it 13.9 5.8 times that pure This work provides novel designing constructing unique efficient fixation.

Язык: Английский

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TiO₂ Quantum Dots/Fe₃S₄ Heterojunction Nanocomposites for Efficient Ammonia Production through Nitrogen Fixation upon Simulated Sunlight

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(2), С. 2200 - 2213

Опубликована: Янв. 4, 2024

Using semiconductor photocatalysts instead of the traditional Haber–Bosch procedure to produce ammonia is a promising strategy save energy and prevent environmental pollution. Therefore, finding suitable photocatalyst with high efficiency stability has become one big challenges research communities in field heterogeneous photocatalysis. Herein, S-scheme TiO2 quantum dots (QDs)/Fe3S4 heterojunction were synthesized through hydrothermal route. The nitrogen photofixation measurements exhibited that QDs/Fe3S4 have excellent activities, where generation NH3 by optimized nanocomposite reached 16,624 μmol L–1 g–1 upon simulated sunlight. This amount was almost 19.9, 6.30, 2.85 times as those TiO2, QDs, Fe3S4 photocatalysts, respectively. promoted photocatalytic ability devoted outstanding visible-light absorption, accelerated segregation photoinduced electron–hole pairs, enhanced surface area. key purpose this rational design based on QDs one-pot facile fabrication procedure, which exhibits admirable performance fixation. Considering advantages binary it anticipated could be utilized solar conversion processes.

Язык: Английский

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MXene-based catalysts: A review

Materials Today Catalysis, Год журнала: 2024, Номер 5, С. 100054 - 100054

Опубликована: Май 27, 2024

Two-dimensional (2D) materials, such as graphene, hexagonal boron nitride, 2D metal–organic frameworks, layered double hydroxides, transition metal dichalcogenides, and MXenes, have garnered significant attention in catalysis due to their exceptional properties structures. Notably, recent studies revealed the promising catalytic activity of MXene-based catalysts for many reactions, including hydrogen evolution, oxygen reduction, nitrogen carbon dioxide alcohol oxidation, hydrogenation, dehydrogenation, methanol conversion, dry reforming methane, CO oxidation. This review offers a summary advances field, contextualizing progress made. Additionally, it delves into existing challenges while presenting prospects future developments this domain.

Язык: Английский

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Atomically‐Scattered Active Centers Accelerating Photocatalytic Evolution of Ammonia

Advanced Energy Materials, Год журнала: 2024, Номер 14(28)

Опубликована: Апрель 26, 2024

Abstract Photocatalytic N 2 reduction to ammonia rises as a cost‐effective, environmentally benign, and efficient route generate transportable/storable energy carrier essential fertilizer. Recently, photocatalysts anchored with various atomically scattered active centers (ASACs), such Ru, Fe, Au, Pt, Cu, Mo, La, are extensively explored in photocatalytic ‐to‐ammonia transformation. This review critically summarizes the current achievements synthesis of photocatalyst supports (such metal oxide, carbon nitride, metal‐organic framework, covalent organic framework) above‐mentioned ASACs for form ammonia. The routes, structural/compositional characteristics, performances these summarized introduced. Furthermore, atomic‐scale relationship between structure/composition performance is also reaction mechanism including kinetics/thermodynamics, pathways, charge kinetics, especially those revealed by state‐of‐art characterization techniques, have been highlighted. outlines basic principles novel aimed at evolution. Finally, challenges, opportunities, future outlooks evolution

Язык: Английский

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Modulation of bismuth vacancies on BiOCl surface by tungsten doping for photocatalytic nitrogen reduction

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 131424 - 131424

Опубликована: Янв. 1, 2025

Язык: Английский

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Surface and interface engineering of CAU-17/MXene Schottky heterojunction for efficient photocatalytic nitrogen fixation

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 131939 - 131939

Опубликована: Фев. 1, 2025

Язык: Английский

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Recent advances in the development of bismuth-based materials for the photocatalytic reduction of hexavalent chromium in water

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Год журнала: 2023, Номер 55, С. 20 - 43

Опубликована: Дек. 1, 2023

Язык: Английский

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Construction of BiOI-FTO devices with outstanding photocatalytic nitrogen fixation performance

Materials Today Chemistry, Год журнала: 2024, Номер 37, С. 101981 - 101981

Опубликована: Март 5, 2024

Язык: Английский

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Integration of TiO2 QDs with brown TiO2: S-scheme photocatalysts with boosted activity for simulated sunlight-driven N2 fixation without hole quencher

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2023, Номер 682, С. 132867 - 132867

Опубликована: Ноя. 28, 2023

Язык: Английский

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Modification strategies of BiOI-based visible-light photocatalysts and their efficacy on decomposition of tetracycline antibiotics in water

Critical Reviews in Environmental Science and Technology, Год журнала: 2024, Номер 54(18), С. 1364 - 1393

Опубликована: Фев. 5, 2024

Photocatalysis is regarded as a potent alternative to conventional treatment methods with low removal efficiency (e.g., activated sludge process) against refractory/recalcitrant antibiotics in wastewater. Here, the potential utility of bismuth oxyiodide (BiOI)-based materials has been evaluated visible-light–driven photocatalysts (bandgap energy < 2.0 eV) unique optical structure for enhanced tetracyclines (TCs) representative antibiotic product. The effects key modification strategies elemental doping and heterojunction formation) on photocatalytic activity BiOI-based are assessed TCs terms performance metrics such quantum (QE) space-time yield (STY). This review also highlights challenges promising opportunities application BiO-based real effluents. Accordingly, zinc-doped BiOI recognized have maximum QE 2.95 × 10−5 molecules photon−1 STY 10−7 mg−1. expected help deepen exploration path construction efficient systems based their evaluation along discussions perspectives.

Язык: Английский

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