Screening of Intermetallic Compounds Based on Intermediate Adsorption Equilibrium for Electrocatalytic Nitrate Reduction to Ammonia

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(29), С. 20069 - 20079

Опубликована: Июль 10, 2024

Electrocatalytic nitrate (NO

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Regulating intermediate adsorption and H₂O dissociation on a diatomic catalyst to promote electrocatalytic nitrate reduction to ammonia

Energy & Environmental Science, Год журнала: 2024, Номер 17(18), С. 6717 - 6727

Опубликована: Янв. 1, 2024

Cu–Fe–N–C demonstrates excellent electrocatalytic activity for nitrate reduction by optimizing intermediate adsorption and generating a substantial supply of H* the thorough hydrogenation N-containing intermediates.

Язык: Английский

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Enhancing Compatibility of Two‐Step Tandem Catalytic Nitrate Reduction to Ammonia Over P‐Cu/Co(OH)₂

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 11, 2024

Abstract Electrochemical nitrate reduction reaction (NO 3 RR) is a promising approach to realize ammonia generation and wastewater treatment. However, the transformation from NO − NH involves multiple proton‐coupled electron transfer processes by‐products 2 , H etc.), making high selectivity challenge. Herein, two‐phase nanoflower P‐Cu/Co(OH) electrocatalyst consisting of P‐Cu clusters P‐Co(OH) nanosheets designed match two‐step tandem process ) more compatible, avoiding excessive accumulation optimizing whole reaction. Focusing on initial 2e process, inhibited * desorption Cu sites in gives rise appropriate released electrolyte. Subsequently, exhibits superior capacity for trapping transforming desorbed during latter 6e due thermodynamic advantage contributions active hydrogen. In 1 m KOH + 0.1 leads yield rate 42.63 mg h cm Faradaic efficiency 97.04% at −0.4 V versus reversible hydrogen electrode. Such well‐matched achieves remarkable synthesis performance perspective catalytic reaction, offering novel guideline design RR electrocatalysts.

Язык: Английский

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Mechanism of Key Intermediates Regulation in Electrocatalytic Nitrate-to-Ammonia Conversion Driven by Polarized Electric Field

Nano Energy, Год журнала: 2025, Номер unknown, С. 110708 - 110708

Опубликована: Янв. 1, 2025

Язык: Английский

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Proximity electronic effect of adjacent Ni Site enhances compatibility of hydrogenation and deoxygenation over Cu Site to boost nitrate electroreduction to ammonia

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Год журнала: 2025, Номер 70, С. 285 - 298

Опубликована: Март 1, 2025

Язык: Английский

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Electrochemical reduction of nitrate to ammonia: From fundamental understanding to practical applications

Chem Catalysis, Год журнала: 2024, Номер 4(9), С. 101060 - 101060

Опубликована: Июль 23, 2024

Язык: Английский

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Promoting the OH cycle on an activated dynamic interface for electrocatalytic ammonia synthesis

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Авг. 6, 2024

Renewable-driven electrocatalytic nitrate conversion offers a promising alternative to alleviate pollution and simultaneously harvest green ammonia. However, due the complex proton-electron transfer processes, reaction mechanism remains elusive, thereby limiting energy efficiency. Here, we adopt Ni(OH)₂ as model catalyst investigate dynamic evolution of interface. A proposed OH cycle involves formation locally OH-enriched microenvironment promote hydrogenation process, which is identified through in-situ spectroscopy isotopic labelling. By further activating state implementation surface vacancies via plasma, achieve high Faradaic efficiency almost 100%. The activated interface accelerates by enhancing dehydroxylation, water dissociation, adsorption, promoting electroreduction inhibiting hydrogen evolution. We anticipate that rational activation interfacial can facilitate activity improve Understanding electrochemical reduction critical but challenging. authors use an activate plasma-induced vacancies, resulting in nearly 100%

Язык: Английский

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Nanostructured hybrid catalysts empower the artificial leaf for solar-driven ammonia production from nitrate

Energy & Environmental Science, Год журнала: 2024, Номер 17(15), С. 5653 - 5665

Опубликована: Янв. 1, 2024

This work designed a nanostructured hybrid catalytic layer on commercial Si absorber to empower the artificial leaf for solar-driven ammonia and value-added chemicals production.

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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Oxygen-deficient NiCo2O4 porous nanowire for superior electrosynthesis of ammonia coupling with valorization of ethylene glycol

Chemical Engineering Journal, Год журнала: 2024, Номер 496, С. 154220 - 154220

Опубликована: Июль 22, 2024

Язык: Английский

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