Cu1‐Fe Dual Sites for Superior Neutral Ammonia Electrosynthesis from Nitrate

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(31)

Опубликована: Май 21, 2024

Abstract The electrochemical nitrate reduction reaction (NO 3 RR) is able to convert − ) into reusable ammonia (NH ), offering a green treatment and resource utilization strategy of wastewater synthesis. conversion NO NH undergoes water dissociation generate active hydrogen atoms nitrogen‐containing intermediates hydrogenation tandemly. two relay processes compete for the same sites, especially under pH‐neutral condition, resulting in suboptimal efficiency selectivity electrosynthesis from . Herein, we constructed Cu 1 ‐Fe dual‐site catalyst by anchoring single on amorphous iron oxide shell nanoscale zero‐valent (nZVI) RR, achieving an impressive removal 94.8 % 99.2 neutral pH concentration 50 mg L −1 −N conditions, greatly surpassing performance nZVI counterpart. This superior can be attributed synergistic effect enhanced adsorption Fe sites strengthened activation single‐atom decreasing energy barrier rate‐determining step *NO‐to‐*NOH. work develops novel fabricating catalysts enhance , presents environmentally sustainable approach treatment.

Язык: Английский

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Recent Advances and Perspectives on Coupled Water Electrolysis for Energy‐Saving Hydrogen Production

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 7, 2025

Abstract Overall water splitting (OWS) to produce hydrogen has attracted large attention in recent years due its ecological‐friendliness and sustainability. However, the efficiency of OWS been forced by sluggish kinetics four‐electron oxygen evolution reaction (OER). The replacement OER alternative electrooxidation small molecules with more thermodynamically favorable potentials may fundamentally break limitation achieve production low energy consumption, which also be accompanied value‐added chemicals than or electrochemical degradation pollutants. This review critically assesses latest discoveries coupled various OWS, including alcohols, aldehydes, amides, urea, hydrazine, etc. Emphasis is placed on corresponding electrocatalyst design related mechanisms (e.g., dual hydrogenation N–N bond breaking hydrazine C═N regulation urea inhibit hazardous NCO − NO productions, etc.), along emerging reactions (electrooxidation tetrazoles, furazans, iodide, quinolines, ascorbic acid, sterol, trimethylamine, etc.). Some new decoupled electrolysis self‐powered systems are discussed detail. Finally, potential challenges prospects highlighted aid future research directions.

Язык: Английский

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Multistage structural self-supported electrode via structural engineering on carbon nanofibers for efficient hydrogen evolution reaction at high current density

Separation and Purification Technology, Год журнала: 2024, Номер 347, С. 127628 - 127628

Опубликована: Апрель 23, 2024

Язык: Английский

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Lowering the burning rate temperature coefficient of composite propellant by compensating its burning surface through thermal expansion and contraction in microstructure

Chemical Engineering Journal, Год журнала: 2024, Номер 494, С. 152800 - 152800

Опубликована: Июнь 5, 2024

Язык: Английский

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Advancements in methodologies and techniques for the synthesis of energetic materials: A review

Energetic Materials Frontiers, Год журнала: 2024, Номер unknown

Опубликована: Июнь 1, 2024

Recent years have witnessed significant advancements in methodologies and techniques for the synthesis of energetic materials, which are expected to shape future manufacturing applications. Techniques including continuous flow chemistry, electrochemical synthesis, microwave-assisted biosynthesis been extensively employed pharmaceutical fine chemical industries and, gratifyingly, found broader This review comprehensively introduces recent utilization these emerging techniques, aiming provide a catalyst development novel green methods synthesizing materials.

Язык: Английский

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Interfacial Charge Redistribution in Pt Nanocluster/Nickel Diselenide Electrocatalyst for Promoting Alkaline Water Splitting

Journal of Alloys and Compounds, Год журнала: 2024, Номер unknown, С. 178350 - 178350

Опубликована: Дек. 1, 2024

Язык: Английский

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Support Regulation Strategy Synergistic with Ru Single-Atom Catalyst for Energy-Saving Hydrogen Production Assisted by Green Electrosynthesis of Azotetrazolate

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 25, 2025

The slow kinetics of the oxygen evolution reaction limits electrochemical overall water splitting (OWS). To address this, integrating thermodynamically favorable organic electro-oxidation with hydrogen (HER) can enhance production performance. Notably, 5-amino-1H-tetrazole oxidation-assisted OWS not only achieves energy-saving but also produces energetic compound 5,5'-azotetrazolate salts in a mild manner. This necessitates in-depth research into catalysts straightforward synthesis methods and excellent performance for production. Supported single-atom (SACs) have high dispersibility reduce use precious metals. Here, we report highly efficient HER catalyst consisting Ru single atom anchored on low-crystallinity Zn-doped Ni2P nanosheets (Ru-LC-ZNP). low overpotential 28.9 mV at -10 mA cm-2, demonstrating stability least 100 h no noticeable activity loss. experimental results indicate that outstanding alkaline be attributed to synergistic optimization between support. By coupling 5-AT electro-oxidation, cell voltage electrolysis enormously reduced 1.26 V 10 cm-2. work provides insights mechanism supported SACs as active catalysts.

Язык: Английский

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Na-modified La(CrMnFeCoNi)1/5O3 high entropy perovskite oxides with B-site valence fluctuations for excellent OER performance electrocatalysts

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 127, С. 275 - 285

Опубликована: Апрель 14, 2025

Язык: Английский

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Synergistic adsorption and photocatalytic degradation of perfluorooctanoic acid in aqueous solution by a regenerable biochar-titania nanotube composite

RSC Advances, Год журнала: 2025, Номер 15(19), С. 14917 - 14928

Опубликована: Янв. 1, 2025

TNTs@biochar effectively concentrates trace PFOA from large water volumes onto a small amount of TNTs@biochar, enabling fast and efficient photodegradation concentrated PFOA. Photodegradation regenerated the composite for multiple reuse cycles.

Язык: Английский

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Electrochemical Hydrogen Production Coupling with the Upgrading of Organic and Inorganic Chemicals

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 21, 2025

Abstract Electrocatalytic water splitting powered by renewable energy is a green and sustainable method for producing high‐purity H 2 . However, in conventional electrolysis, the anodic oxygen evolution reaction (OER) involves four‐electron transfer process with inherently sluggish kinetics, which severely limits overall efficiency of splitting. Recently, replacing OER thermodynamically favorable oxidation reactions, coupled hydrogen reaction, has garnered significant attention achieved remarkable progress. This strategy not only offers promising route energy‐saving H₂ production but also enables simultaneous synthesis high‐value‐added products or removal pollutants at anode. Researchers successfully demonstrate upgrading numerous organic inorganic alternatives through this approach. In review, latest advances coupling electrocatalytic alternative chemicals are summarized. What's more, optimization catalysts, structure–performance relationship, catalytic mechanism various reactions well discussed each part. Finally, current challenges future prospects field outlined, aiming to inspire further innovative breakthroughs exciting area research.

Язык: Английский

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