Cu‐Co Dual Sites Tandem Synergistic Effect Boosting Neutral Low Concentration Nitrate Electroreduction to Ammonia

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Фев. 17, 2025

Abstract Electrochemical nitrate reduction reaction (NO 3 − RR) has emerged as an alternative strategy for wastewater treatment and ammonia production in neutral low‐concentration nitrate. However, the electrocatalyst faces challenge of limited NO distribution deficient active hydrogen (H ads ) on catalyst surface resulting from low concentration difficulty water splitting under conditions. Here, a Cu‐Co dual sites tandem synergistic catalysis mechanism been proposed by doping Cu into CoP to facilitate adsorption conversion accelerate leading significantly high RR performance. The designed Cu‐CoP exhibits yield 7.65 mg h −1 cm −2 Faraday efficiency 85.1% at −1.0 V (10 m M ), which is highest reported data. In situ characterization theoretical calculations confirm effect, site favors activation form 2 , concurrently modulates electronic structure Co with optimized H enhanced

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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Research Progress of Coordination Materials for Electrocatalytic Nitrogen Oxides Species Conversion into High-Value Chemicals

EnergyChem, Год журнала: 2025, Номер unknown, С. 100146 - 100146

Опубликована: Фев. 1, 2025

Язык: Английский

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FeIr Alloy Optimizes the Trade‐Off Between Nitrate Reduction and Active Hydrogen Generation for Efficient Electro‐Synthesis of Ammonia in Neutral Media

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 10, 2025

Abstract Electrochemically promoted nitrate reduction reaction (NITRR) holds great potential for the “green” synthesis of ammonia (NH 3 ). However, NITRR in neutral media, though close to practical scenario, is often limited by an insufficient supply active hydrogen (*H) due sluggish water cleavage. In this work, it demonstrated that a bimetallic alloy FeIr can optimize trade‐off between and *H formation media. As result, exhibits excellent catalytic performance toward with Faradaic efficiency NH up 97.3% high yield rate 11.67 mg h −1 cm −2 at low working −0.6 V (versus reversible electrode (RHE)), surpassing monometallic catalysts as well majority Fe‐based state‐of‐the‐art. It also found displays remarkable electron rearrangement hetero‐atoms their significant orbital hybridization, which benefits not only but process. Moreover, coupling FeIr‐based methanol oxidation (MOR) results sustainable productions formate combined FE nearly 200% cell‐voltage 2 V. This work thus demonstrates promising strategy designing efficient NITRR.

Язык: Английский

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Co-engineering of Fe-Mn nanocluster with porous carbon for enhanced electrocatalytic ammonia synthesis

Chemical Communications, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Here, we developed iron–manganese nanocluster oxide-loaded nitrogen/oxygen-doped porous carbon towards effective NO 3 RR and Zn–nitrate batteries.

Язык: Английский

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Highly Efficient Electrocatalytic Nitrate Reduction to Ammonia: Group VIII-Based Catalysts

ACS Nano, Год журнала: 2024, Номер unknown

Опубликована: Окт. 4, 2024

The accumulation of nitrates in the environment causes serious health and environmental problems. electrochemical nitrate reduction reaction (e-NO

Язык: Английский

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Bimetal anchoring porous MXene nanosheets for driving tandem catalytic high‐efficiency electrochemical nitrate reduction

AIChE Journal, Год журнала: 2024, Номер 71(2)

Опубликована: Окт. 17, 2024

Abstract Electrochemical nitrate reduction reaction (NO 3 RR) is considered a promising strategy for ammonia synthesis and removal, in which catalyst development crucial. Herein, series of bimetal (Co Cu) anchoring porous MXene nanosheets x Cu y @PM) catalysts were prepared by combining etching strategy. On the one hand, Co bimetals provided tandem catalytic active sites NO RR. other in‐plane PM exhibited good electrical conductivity multiple transport pathways. Consequently, optimized 7 @PM achieved high yield 7.43 mg h −1 cat. an excellent Faraday efficiency (FE) 95.9%. The mechanism RR was investigated analyzing electrolysis products situ Fourier transform infrared spectroscopy. Furthermore, based ZnNO − battery superior power density 5.59 mW cm −2 NH FE 92.3%. This work presents effective to design MXene‐based high‐performance electrocatalysts.

Язык: Английский

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Manganese‐Resorcin[4]arene‐Based Metal‐Organic Framework: Syntheses, Structures and Lithium‐Ion Battery Application

European Journal of Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 3, 2025

Abstract By employing a dodecarboxylic acid substituted resorcin[4]arene ligand ( L ), new metal‐organic framework (MOF), [Mn 6 (L)(H 2 O) 14 ] ⋅ DMA 5H O (defined as Mn ‐ ) has been synthesized under solvothermal conditions. shows 3D with abundant carboxyl groups, which result in the excellent electrochemical performance anode materials lithium ion batteries (LIBs). The activated Mn‐L maintains specific capacities of 598 mAh/g at 200 mA/g after 150 runs and 420 500 350 runs. rate capacity, cyclic stability enable to be prospective material for LIBs.

Язык: Английский

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Electrocatalytic reduction of nitrate in denitrification wastewater to ammonia: Electrode–electrolyte coupling to enhance the directed conversion performance

Fuel, Год журнала: 2025, Номер 388, С. 134491 - 134491

Опубликована: Фев. 3, 2025

Язык: Английский

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Rational electrocatalyst design for selective nitrate reduction to ammonia

Chemical Physics Reviews, Год журнала: 2025, Номер 6(1)

Опубликована: Фев. 26, 2025

The electrocatalytic nitrate (NO3−) reduction reaction (NO3RR) is an attractive strategy for sustainable ammonia (NH3) synthesis, contributing to the artificial nitrogen cycle and renewable energy storage. However, selective conversion of NO3− NH3 remains challenging due complex multi-electron transfer processes, which result in numerous by-products, low yield rate, Faradaic efficiency. Additionally, electrochemical sensitivity catalyst structure complicates identifying active sites. Herein, we introduce mechanisms situ characterization technologies NO3RR production. Then, a summary theoretical research advances guide design catalyst, including density functional theory calculations, activity descriptors, machine learning. Furthermore, discuss strategies optimize performance NO3RR, focusing on nitrogenous-intermediate adsorption, proton tandem catalysis. Finally, challenges opportunities highly efficient are summarized.

Язык: Английский

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