Nanoarchitectonics of S‐Scheme Heterojunction Photocatalysts: A Nanohouse Design Improves Photocatalytic Nitrate Reduction to Ammonia Performance

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(38)

Опубликована: Июнь 25, 2024

Photocatalytic nitrate reduction reaction (NitRR) is a promising route for environment remediation and sustainable ammonia synthesis. To design efficient photocatalysts, the recently emerged nanoarchitectonics approach holds great promise. Here, we report nanohouse-like S-scheme heterjunction photocatalyst with high photocatalytic NitRR performance. The nano-house has floor of plate-like metal organic framework-based (NH

Язык: Английский

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Recent advances on MOFs for photocatalytic and electrocatalytic nitrogen reduction to produce ammonia

Nano Energy, Год журнала: 2024, Номер 130, С. 110109 - 110109

Опубликована: Авг. 13, 2024

Язык: Английский

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Purification and Value-Added Conversion of NO_x under Ambient Conditions with Photo-/Electrocatalysis Technology

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 6, 2025

As primary air pollutants from fossil fuel combustion, the excess emission of nitric oxides (NOx) results in a series atmospheric environmental issues. Although selective catalytic reduction technology has been confirmed to be effective for NOx removal, green purification and value-added conversion under ambient conditions are still facing great challenges, especially nitrogen resource recovery. To address that, photo-/electrocatalysis offers sustainable routes efficient upcycling temperature pressure, which received considerable attention scientific communities. In this review, recent advances critically summarized. The target products reaction mechanisms systems, together with responsible active sites, discussed, respectively. Then, realistic practicability is proposed, including strict performance evaluation criteria application by photo-/electrocatalysis. Finally, current challenges future opportunities proposed terms catalyst design, enhancement, mechanism understanding, practical conditions, product separation techniques.

Язык: Английский

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Tandem photocatalysis of nitrate to nitrogen on Cu@CN/TiOx S-scheme heterojunction

Separation and Purification Technology, Год журнала: 2024, Номер 348, С. 127686 - 127686

Опубликована: Апрель 26, 2024

Язык: Английский

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Nanoarchitectonics of S‐Scheme Heterojunction Photocatalysts: A Nanohouse Design Improves Photocatalytic Nitrate Reduction to Ammonia Performance

Angewandte Chemie, Год журнала: 2024, Номер 136(38)

Опубликована: Июнь 25, 2024

Abstract Photocatalytic nitrate reduction reaction (NitRR) is a promising route for environment remediation and sustainable ammonia synthesis. To design efficient photocatalysts, the recently emerged nanoarchitectonics approach holds great promise. Here, we report nanohouse‐like S‐scheme heterjunction photocatalyst with high photocatalytic NitRR performance. The nano‐house has floor of plate‐like metal organic framework‐based (NH 2 ‐MIL‐125), on which another Co(OH) nanosheet grown while ZIF‐8 hollow cages are also constructed as surrounding wall/roof. Experimental simulation results indicate that positively charged, highly porous hydrophobic wall can modulate in nanohouse by (i) NO 3 − enrichment/NH 4 + discharge (ii) suppression competitive hydrogen evolution reaction. In combination enhanced electron‐hole separation strong redox capability NH ‐MIL‐125@Co(OH) confined nano‐house, designed delivers an yield 2454.9 μmol g −1 h apparent quantum 8.02 % at 400 nm pure water. Our work provides new insights into principles advanced photocatalyst.

Язык: Английский

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NH₃ Synthesis from N₁ Compounds by Photocatalytic Technology: Promotion Mechanism, Reaction Pathways, and Efficiency Evaluation Criteria

ACS Catalysis, Год журнала: 2024, Номер 14(20), С. 15721 - 15742

Опубликована: Окт. 9, 2024

Ammonia (NH3) is one of the most important chemicals in high demand human society. Given high-energy consumption and environmental impact associated with Haber–Bosch process, an environmentally friendly method for NH3 synthesis under ambient conditions should be developed. The reduction N1 compounds, including nitrate (NO3–), nitrite (NO2–), nitric oxide (NOx), are more energetically favorable than that nitrogen (N2), avoiding activation inert N≡N bonds. Photocatalytic from compounds' reduction, which utilizes sunlight to convert contaminants into value-added chemicals, offers intriguing approach synthesis. This review a comprehensive overview progress research photocatalysis technology compounds Insight efficiency promotion mechanism provided, particularly focusing on optimization photocatalyst, mass transfer reactants, redox synergistic promotion. Moreover, reaction pathways summarized. evaluation criteria, accurate quantification yield, performance indicators, separation recovery, discussed guide systematic reliable Finally, current achievements future challenges photocatalytic critically discussed.

Язык: Английский

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S-Scheme-Mediated NiCo₂S₄–P–g-C₃N₄ Heterojunction for Selective Nitrate Reduction to Ammonia

ACS Applied Engineering Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 7, 2025

Photocatalysis offers a promising avenue for the efficient removal of nitrate compounds from water by harnessing solar energy and transforming them to ammonia. The constraints, such as rapid charge carrier recombination comparatively low selectivity, however, hinder widespread application technology. In this study, an inexpensive bimetal sulfide (NiCo2S4, NCS) is anchored over phosphorus (P)-doped g-C3N4 (PCN) sheets. fabricated NCS-PCN heterojunction tested photocatalytic nitrate-reduction activity. Notably, dose composite with 30% (w/w) NCS shows optimal reduction, achieving 99% in 4 h, ammonia selectivity increasing ∼56 96%, compared PCN alone under identical conditions. photocatalyst also remarkable stability, experiencing marginal decrease less than 1% activity after 5 reaction-regeneration cycles. isotope labeling test using nuclear magnetic resonance spectroscopy confirms that salt supplied feedstock nitrogen source formed during photoreduction. observed enhanced activity, supported radical scavenging tests, electronic paramagnetic measurements, X-ray photoelectron spectroscopy, situ diffuse reflectance infrared Fourier transform spectroscopic analyses, provides evidence S-scheme-mediated transfer mechanism heterojunction. This study not only contributes valuable insights into light-harvesting but paves way sustainable processes on large scale.

Язык: Английский

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Theoretical evaluation of nitrate reduction reaction on single‐atom anchored boron nitride fullerene

Journal of the Chinese Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Фев. 18, 2025

Abstract Nitrate reduction reaction (NO 3 RR) is a powerful technique for eliminating pollution. Here, NO RRs on transition metal‐doped boron nitride fullerene (TM/B 11 N 12 ) were thoroughly examined utilizing density functional theory (DFT). Co/B , potential single‐atom catalyst (SAC) with low thermal barrier RR toward NH synthesis good stability, activity, and selectivity, was successfully screened out. has the lowest limiting ( U L of −0.45 V performance. Due to comparatively restrained adsorption proton competitive hydrogen evolution (HER) substantially limited. The excellent selectivity production ensured by significant energy prerequisite formation by‐products (NO, 2 O, . By ab initio molecular dynamics (AIMD) simulations, exhibits remarkable structural stability at 400 K minimal distortion as compared its initial shape. Our research may not only offer fundamental understanding activity origin catalytic mechanism TM/B but also open up opportunities rational designing SACs synthesis.

Язык: Английский

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Promoting Activation of N2 and H2o Via Dual Active Sites Synergistically for Efficient Photocatalytic Ammonia Synthesis

Опубликована: Янв. 1, 2025

Язык: Английский

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Copper-doped metal–organic framework-74 solid-state electrolytes for high performance all-solid-state sodium metal batteries

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 689, С. 137241 - 137241

Опубликована: Март 4, 2025

Язык: Английский

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