Construction of a Heterostructured Alloy–Molybdenum Nitride Catalyst for Enhanced NH₃ Production via Nitrate Electrolysis

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 14, 2025

Here, we reported a highly efficient nitrate electroreduction (NO3RR) electrocatalyst that integrated alloying and heterostructuring strategies comprising FeCo alloy Mo0.82N (FeCo-Mo0.82N/NC). Notably, the maximum NH3 Faraday efficiency (FE) of 83.24%, yield 12.28 mg h-1 mgcat.-1, good stability were achieved over FeCo-Mo0.82N/NC. Moreover, Zn-NO3- battery assembled with FeCo-Mo0.82N/NC exhibited power density 0.87 mW cm-2, an 14.09 FE as high 76.31%.

Язык: Английский

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Accelerating proton coupled electron transfer by confined Cu-Ni bimetallic clusters for boosting electrochemical hydrodeoxygenation of nitrate

Applied Catalysis B Environment and Energy, Год журнала: 2025, Номер unknown, С. 125195 - 125195

Опубликована: Фев. 1, 2025

Язык: Английский

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Electronic Structure Optimization and Proton-Transfer Enhancement on Titanium Oxide-Supported Copper Nanoparticles for Enhanced Nitrogen Recycling from Nitrate-Contaminated Water

Environmental Science & Technology, Год журнала: 2023, Номер 57(27), С. 10117 - 10126

Опубликована: Июнь 26, 2023

Electrocatalytic reduction of nitrate to NH3 (NO3RR) on Cu offers sustainable production and nitrogen recycling from nitrate-contaminated water. However, affords limited NO3RR activity owing its unfavorable electronic state the slow proton transfer surface, especially in neutral/alkaline media. Furthermore, although a synchronous "NO3RR collection" system has been developed for nitrate-laden water, no is designed natural water that generally contains low-concentration nitrate. Herein, we demonstrate depositing nanoparticles TiO2 support enables formation electron-deficient Cuδ+ species (0 < δ ≤ 2), which are more active than Cu0 NO3RR. TiO2-Cu coupling induces local electric-field enhancement intensifies adsorption/dissociation at interface, accelerating Cu. With dual enhancements, delivers an NH3-N selectivity 90.5%, mass 41.4 mg-N h gCu-1, specific 377.8 h-1 m-2, minimal leaching (<25.4 μg L-1) when treating 22.5 mg L-1 NO3--N -0.40 V, outperforming most reported Cu-based catalysts. A sequential collection based was then proposed, could recycle under wide concentration window 22.5-112.5 rate 209-630 mgN m-2 h-1. We also demonstrated this collect 83.9% (19.3 lake

Язык: Английский

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Rh-dispersed Cu nanowire catalyst for boosting electrocatalytic hydrogenation of 5-hydroxymethylfurfural

Science Bulletin, Год журнала: 2023, Номер 68(19), С. 2190 - 2199

Опубликована: Июль 25, 2023

Язык: Английский

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Au Nanowires Decorated Ultrathin Co₃O₄ Nanosheets toward Light‐Enhanced Nitrate Electroreduction

Small, Год журнала: 2023, Номер 19(27)

Опубликована: Март 27, 2023

Nitrate is a reasonable alternative instead of nitrogen for ammonia production due to the low bond energy, large water-solubility, and high chemical polarity good absorption. electroreduction reaction (NO3 RR) an effective green strategy both nitrate treatment production. As electrochemical reaction, NO3 RR requires efficient electrocatalyst achieving activity selectivity. Inspired by enhancement effect heterostructure on electrocatalysis, Au nanowires decorated ultrathin Co3 O4 nanosheets (Co3 -NS/Au-NWs) nanohybrids are proposed improving efficiency nitrate-to-ammonia electroreduction. Theoretical calculation reveals that heteroatoms can effectively adjust electron structure Co active centers reduce energy barrier determining step (*NO → *NOH) during RR. result, -NS/Au-NWs achieve outstanding catalytic performance with yield rate (2.661 mg h-1 mgcat-1 ) toward nitrate-to-ammonia. Importantly, show obviously plasmon-promoted localized surface plasmon resonance (LSPR) property Au-NWs, which enhanced NH3 4.045 . This study structure-activity relationship LSPR-promotion RR, provide reduction efficiency.

Язык: Английский

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Recent developments in designing Cu-based electrocatalysts and advanced strategies for electrochemical nitrate reduction to ammonia

Journal of environmental chemical engineering, Год журнала: 2023, Номер 11(5), С. 110927 - 110927

Опубликована: Сен. 4, 2023

Язык: Английский

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Design of material regulatory mechanism for electrocatalytic converting NO/NO₃⁻to NH₃progress

Natural Sciences, Год журнала: 2023, Номер 3(3)

Опубликована: Апрель 10, 2023

Abstract Nitric oxide (NO)/nitrate (NO 3 − ) exists as the most hazardous pollutions in air/water that severely impacts human health. Conventional disposing methods are energy‐consuming and uneconomic. Moreover, ammonia (NH fertilizer resources acquire urgent, eco‐friendly, economical strategies can remove NO/NO pollution simultaneously convert nitrate species, maintaining nitrogen balance. Electrochemical (N) reduction is attracting more attention, particularly electrocatalytic (ENR) to supply an approach fixed generate ammonia. ENR capable of achieving high NH yield Faradaic efficiency (FE), avoiding competitive hydrogen evolution reactions easily overcoming strong N≡N triple bond (941 kJ mol −1 ). There abundant research studies related for decreasing supplying profitable . In this review, we discuss different regulations crystalline facet engineering, heteroatom doping, heterostructure, surface vacancy single‐atom structure, which bring various metal/nonmetal their combined catalysts preferable performance, such reactivity, selectivity, FE, stability. Finally, summarize challenges provide perspectives promote industrial application ENR. Key Points This review focusing on systematically introduce modification regulatory mechanism enhance electrochemical performance NORR/NO RR, including single atom structure.

Язык: Английский

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Ru-Doped Ultrasmall Cu Nanoparticles Decorated with Carbon for Electroreduction of Nitrate to Ammonia

Inorganic Chemistry, Год журнала: 2024, Номер 63(8), С. 3955 - 3961

Опубликована: Фев. 9, 2024

Electrocatalytic nitrate reduction reaction offers a sustainable approach to treating wastewater and synthesizing high-value ammonia under ambient conditions. However, electrocatalysts with low faradaic efficiency selectivity severely hinder the development of nitrate-to-ammonia conversion. Herein, Ru-doped ultrasmall copper nanoparticles loaded on carbon substrate (Cu-Ru@C) were fabricated by pyrolysis Cu-BTC metal-organic frameworks (MOFs). The [email protected] catalyst exhibits high (FE) 90.4% at -0.6 V (vs RHE) an yield rate 1700.36 μg h

Язык: Английский

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Metal/covalent-organic framework-based electrocatalysts for electrochemical reduction of nitrate to ammonia

Coordination Chemistry Reviews, Год журнала: 2024, Номер 518, С. 216061 - 216061

Опубликована: Июль 8, 2024

The pervasive contamination of industrial, domestic, and agricultural wastewater with nitrate poses profound ecological public health risks. Traditional methods for remediating nitrate-laden water face formidable challenges due to its high solubility stability. However, a promising solution emerges in the form electrochemical reduction (eNO3RR), offering both efficient removal valuable ammonia generation sustainable manner. This review explores burgeoning field eNO3RR, focusing on recent advancements utilizing porous crystalline framework materials − metal–organic frameworks (MOFs) covalent-organic (COFs) as novel class electrocatalysts. These innovative exhibit unique properties such adjustable porosity, diverse structures, tunable pore sizes, well-defined active sites, making them ideal candidates enhancing efficiency selectivity under ambient conditions. By dissecting structure–activity relationship inherent MOF/COF-based electrocatalysts, this aims provide comprehensive understanding their role driving conversion NO3− NH3. Moreover, it identifies current proposes future prospects leveraging these advanced pollutants, glimpse into greener more effective approach remediation resource recovery.

Язык: Английский

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Microenvironment Engineering to Promote Selective Ammonia Electrosynthesis from Nitrate over a PdCu Hollow Catalyst

Small, Год журнала: 2023, Номер 19(27)

Опубликована: Апрель 3, 2023

The electrosynthesis of recyclable ammonia (NH3 ) from nitrate under ambient conditions is great importance but still full challenges for practical application. Herein, an efficient catalyst design strategy developed that can engineer the surface microenvironment a PdCu hollow (PdCu-H) to confine intermediates and thus promote selective NH3 nitrate. nanoparticles are synthesized by in situ reduction nucleation nanocrystals along self-assembled micelle well-designed surfactant. PdCu-H shows structure-dependent selectivity toward product during reaction (NO3- RR) electrocatalysis, enabling high Faradaic efficiency 87.3% remarkable yield rate 0.551 mmol h-1 mg-1 at -0.30 V (vs reversible hydrogen electrode). Moreover, this delivers electrochemical performance rechargeable zinc-NO3- battery. These results provide promising tune catalytic renewable feedstocks.

Язык: Английский

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