Advances in ammonia electrosynthesis from ambient nitrate/nitrite reduction

Chem, Год журнала: 2023, Номер 9(7), С. 1768 - 1827

Опубликована: Июнь 21, 2023

Язык: Английский

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Electrochemical Nitrate Reduction: Ammonia Synthesis and the Beyond

Advanced Materials, Год журнала: 2023, Номер 36(17)

Опубликована: Июнь 9, 2023

Natural nitrogen cycle has been severely disrupted by anthropogenic activities. The overuse of N-containing fertilizers induces the increase nitrate level in surface and ground waters, substantial emission oxides causes heavy air pollution. Nitrogen gas, as main component air, used for mass ammonia production over a century, providing enough nutrition agriculture to support world population increase. In last decade, researchers have made great efforts develop processes under ambient conditions combat intensive energy consumption high carbon associated with Haber-Bosch process. Among different techniques, electrochemical reduction reaction (NO

Язык: Английский

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Laser-controlled tandem catalytic sites of CuNi alloys with ampere-level electrocatalytic nitrate-to-ammonia reduction activities for Zn–nitrate batteries

Energy & Environmental Science, Год журнала: 2023, Номер 16(7), С. 2991 - 3001

Опубликована: Янв. 1, 2023

Laser-constructed CuNi alloy electrodes with tandem sites of Ni provide H* and Cu for NO 3 − reduction, achieving ampere-level reduction high-performance Zn–NO batteries.

Язык: Английский

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Intermediates Regulation via Electron‐Deficient Cu Sites for Selective Nitrate‐to‐Ammonia Electroreduction

Advanced Materials, Год журнала: 2023, Номер 35(48)

Опубликована: Сен. 21, 2023

Ammonia (NH3 ), known as one of the fundamental raw materials for manufacturing commodities such chemical fertilizers, dyes, ammunitions, pharmaceuticals, and textiles, exhibits a high hydrogen storage capacity ≈17.75%. Electrochemical nitrate reduction (NO3 RR) to valuable ammonia at ambient conditions is promising strategy facilitate artificial nitrogen cycle. Herein, copper-doped cobalt selenide nanosheets with selenium vacancies are reported robust highly efficient electrocatalyst ammonia, exhibiting maximum Faradaic efficiency ≈93.5% an yield rate 2360 µg h-1 cm-2 -0.60 V versus reversible electrode. The in situ spectroscopical theoretical study demonstrates that incorporation Cu dopants Se into efficiently enhances electron transfer from Co atoms via bridging atoms, forming electron-deficient structure sites accelerate NO3- dissociation stabilize *NO2 intermediates, eventually achieving selective catalysis entire NO3 RR process produce efficiently.

Язык: Английский

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Strategies and applications of electrocatalytic nitrate reduction towards ammonia

Coordination Chemistry Reviews, Год журнала: 2024, Номер 506, С. 215723 - 215723

Опубликована: Фев. 26, 2024

Язык: Английский

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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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Synergistic Effect of Ni/Ni(OH)₂ Core‐Shell Catalyst Boosts Tandem Nitrate Reduction for Ampere‐Level Ammonia Production

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(27)

Опубликована: Апрель 23, 2024

Electrocatalytic reduction of nitrate to ammonia provides a green alternate the Haber-Bosch method, yet it suffers from sluggish kinetics and low yield rate. The follows tandem reaction nitrite subsequent hydrogenation generate ammonia, Faraday efficiency (FE) is limited by competitive hydrogen evolution reaction. Herein, we design heterostructure catalyst remedy above issues, which consists Ni nanosphere core Ni(OH)

Язык: Английский

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Gradient-concentration RuCo electrocatalyst for efficient and stable electroreduction of nitrate into ammonia

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

Опубликована: Июль 25, 2024

Electrocatalytic nitrate reduction to ammonia holds great promise for developing green technologies electrochemical energy conversion and storage. Considering that real resources often exhibit low concentrations, it is challenging achieve high activity in low-concentration solutions due the competing reaction of hydrogen evolution reaction, let alone considering catalyst lifetime. Herein, we present a performance electrocatalyst based on Co nanosheet structure with gradient dispersion Ru, which yields NH

Язык: Английский

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Metal Doped Unconventional Phase IrNi Nanobranches: Tunable Electrochemical Nitrate Reduction Performance and Pollutants Upcycling

Environmental Science & Technology, Год журнала: 2024, Номер 58(24), С. 10863 - 10873

Опубликована: Июнь 6, 2024

Electrochemical nitrate reduction (NO3RR) provides a new option to abate contamination with low carbon footprint. Restricted by competitive hydrogen evolution, achieving satisfied performance in neutral media is still challenge, especially for the regulation of this multielectron multiproton reaction. Herein, facile element doping adopted tune catalytic behavior IrNi alloy nanobranches an unconventional hexagonal close-packed (hcp) phase toward NO3RR. In particular, obtained hcp IrNiCu favor ammonia production and suppress byproduct formation electrolyte indicated situ differential electrochemical mass spectrometry, high Faradaic efficiency (FE) 85.6% large yield rate 1253 μg cm–2 h–1 at −0.4 −0.6 V (vs reversible electrode (RHE)), respectively. contrast, resultant IrNiCo promote nitrite, peak FE 33.1% −0.1 RHE). Furthermore, hybrid electrolysis cell consisting NO3RR formaldehyde oxidation constructed, which are both catalyzed nanobranches. This electrolyzer exhibits lower overpotential holds potential treat polluted air wastewater simultaneously, shedding light on green chemical based contaminate degradation.

Язык: Английский

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Stepwise structural evolution toward robust carboranealkynyl-protected copper nanocluster catalysts for nitrate electroreduction

Science Advances, Год журнала: 2024, Номер 10(18)

Опубликована: Май 1, 2024

Atomically precise metal nanoclusters (NCs) are emerging as idealized model catalysts for imprecise nanoparticles to unveil their structure-activity relationship. However, the directional synthesis of robust NCs with accessible catalytic active sites remains a great challenge. In this work, we achieved bulky carboranealkynyl-protected copper NCs, monomer

Язык: Английский

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