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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Alloying of Cu with Ru Enabling the Relay Catalysis for Reduction of Nitrate to Ammonia

Advanced Materials, Год журнала: 2023, Номер 35(19)

Опубликована: Март 5, 2023

Involving eight electron transfer process and multiple intermediates of nitrate (NO3- ) reduction reaction leads to a sluggish kinetic low Faradaic efficiency, therefore, it is essential get an insight into the mechanism develop highly efficient electrocatalyst. Herein, series reduced-graphene-oxide-supported RuCu alloy catalysts (Rux Cux /rGO) are fabricated used for direct NO3- NH3 . It found that Ru1 Cu10 /rGO shows ammonia formation rate 0.38 mmol cm-2 h-1 (loading 1 mg efficiency 98% under ultralow potential -0.05 V versus Reversible Hydrogen Electode (RHE), which comparable Ru catalyst. The activity can be attributed synergetic effect between Cu sites via relay catalysis, in exclusively NO2- exhibits superior In addition, doping tunes d-band center effectively modulates adsorption energy , promotes This electrocatalysis strategy opens new avenue developing multifunctional catalysts.

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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Flower-like open-structured polycrystalline copper with synergistic multi-crystal plane for efficient electrocatalytic reduction of nitrate to ammonia

Nano Energy, Год журнала: 2022, Номер 97, С. 107124 - 107124

Опубликована: Март 10, 2022

Язык: Английский

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Efficient Electroreduction of Nitrate into Ammonia at Ultralow Concentrations Via an Enrichment Effect

Advanced Materials, Год журнала: 2022, Номер 34(36)

Опубликована: Июль 15, 2022

The electroreduction of nitrate (NO3- ) pollutants to ammonia (NH3 offers an alternative approach for both wastewater treatment and NH3 synthesis. Numerous electrocatalysts have been reported the NO3- , but most them demonstrate poor performance at ultralow concentrations. In this study, a Cu-based catalyst concentrations is developed by encapsulating Cu nanoparticles in porous carbon framework (Cu@C). At -0.3 V vs reversible hydrogen electrode (RHE), Cu@C achieves Faradaic efficiency 72.0% with 1 × 10-3 m which 3.6 times higher than that nanoparticles. Notably, -0.9 RHE, yield rate 469.5 µg h-1 cm-2 highest value . An investigation mechanism reveals can be concentrated owing enrichment effect Cu@C, thereby facilitating mass transfer efficient into

Язык: Английский

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Regulating surface oxygen species on copper (I) oxides via plasma treatment for effective reduction of nitrate to ammonia

Applied Catalysis B Environment and Energy, Год журнала: 2021, Номер 305, С. 121021 - 121021

Опубликована: Дек. 18, 2021

Язык: Английский

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Unveiling Cutting‐Edge Developments in Electrocatalytic Nitrate‐to‐Ammonia Conversion

Advanced Materials, Год журнала: 2024, Номер 36(16)

Опубликована: Янв. 11, 2024

The excessive enrichment of nitrate in the environment can be converted into ammonia (NH

Язык: Английский

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Recent Advances in Electrocatalysts for Efficient Nitrate Reduction to Ammonia

Advanced Functional Materials, Год журнала: 2023, Номер 33(43)

Опубликована: Июнь 25, 2023

Abstract Ammonia as an irreplaceable chemical has been widely demanded to keep the sustainable development of modern society. However, its industrial production consumes huge energy and releases extraordinary green‐house gases, leading various environmental issues. To achieve green ammonia is a great challenge that extensively pursued recently. In review, most promising strategy, electrochemical nitrate reduction reaction (e‐NO 3 RR) for purpose comprehensively investigated give full understanding mechanism provide guidance future directions. Particularly, electrocatalysts focused realize high yield rate Faraday efficiency applications. The recent‐developed catalysts, including noble metallic materials, alloys, metal compounds, single‐metal‐atom metal‐free are systematically discussed review effects factors on catalytic performance in e‐NO RR. Accordingly, strategies, defects engineering, coordination environment modulating, surface controlling, hybridization, carefully improve performance, such intrinsic activity selectivity. Finally, perspectives challenges given out. This shall insightful advanced systems efficiently industry.

Язык: Английский

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Electrified water treatment: fundamentals and roles of electrode materials

Nature Reviews Materials, Год журнала: 2023, Номер 8(7), С. 472 - 490

Опубликована: Май 30, 2023

Язык: Английский

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Enhancing Electrochemical Nitrate Reduction to Ammonia over Cu Nanosheets via Facet Tandem Catalysis

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(26)

Опубликована: Апрель 29, 2023

Electrochemical conversion of nitrate (NO3- ) into ammonia (NH3 represents a potential way for achieving carbon-free NH3 production while balancing the nitrogen cycle. Herein we report high-performance Cu nanosheets catalyst which delivers partial current density 665 mA cm-2 and yield rate 1.41 mmol h-1 in flow cell at -0.59 V vs. reversible hydrogen electrode. The showed high stability 700 h with Faradaic efficiency ≈88 % 365 . In situ spectroscopy results verify that are derived from as-prepared CuO under electrochemical NO3- reduction reaction conditions. measurements functional theory calculations indicate performance is attributed to tandem interaction Cu(100) Cu(111) facets. NO2- generated on facets subsequently hydrogenated facets, thus catalysis promotes crucial hydrogenation *NO *NOH production.

Язык: Английский

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