Advances in ammonia electrosynthesis from ambient nitrate/nitrite reduction

Chem, Journal Year: 2023, Volume and Issue: 9(7), P. 1768 - 1827

Published: June 21, 2023

Language: Английский

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Single‐Atom Bi Alloyed Pd Metallene for Nitrate Electroreduction to Ammonia

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(12)

Published: Jan. 15, 2023

Abstract Electrochemical reduction of nitrate to ammonia (NO 3 RR) holds a great promise for attaining both NH electrosynthesis and wastewater purification. Herein, single‐atom Bi alloyed Pd metallene (Bi 1 Pd) is reported as highly effective NO RR catalyst, showing near 100% ‐Faradaic efficiency with the corresponding yield 33.8 mg h −1 cm −2 at −0.6 V versus RHE, surpassing those almost all ever catalysts. In‐depth theoretical operando spectroscopic investigations unveil that electronically couples its neighboring atoms synergistically activate − destabilize *NO on Pd, leading reduced energy barrier potential‐determining step (*NO→*NOH) enhanced protonation energetics ‐to‐NH pathway.

Language: Английский

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Recent advances in electrocatalytic ammonia synthesis

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2023, Volume and Issue: 50, P. 6 - 44

Published: July 1, 2023

Language: Английский

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Lewis Acid Fe‐V Pairs Promote Nitrate Electroreduction to Ammonia

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(13)

Published: Jan. 18, 2023

Abstract Electrochemical reduction of nitrate to ammonia (NO 3 RR) has been recognized as an appealing approach realize both sustainable NH production and waste removal. Herein, from the perspective Lewis acid‐base interaction, a single‐atom Fe‐doped V 2 O 5 (Fe‐V ) catalyst enriched is designed with acid sites, which present maximum ‐Faradaic efficiency 97.1% corresponding yield 12.5 mg h −1 cm −2 at –0.7 versus RHE. Mechanistic studies based on theoretical calculations operando spectroscopic characterizations identify creation Fe‐V pairs , can synergetically activate NO − promote hydrogenation energetics, restrain hydrogen evolution, leading enhanced RR activity selectivity.

Language: Английский

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Recent Advances in Electrocatalysts for Efficient Nitrate Reduction to Ammonia

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(43)

Published: June 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.

Language: Английский

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Electrocatalytic reduction of nitrate to ammonia on low-cost manganese-incorporated Co3O4 nanotubes

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 324, P. 122293 - 122293

Published: Dec. 16, 2022

Language: Английский

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A practical FeP nanoarrays electrocatalyst for efficient catalytic reduction of nitrite ions in wastewater to ammonia

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 325, P. 122353 - 122353

Published: Dec. 31, 2022

Language: Английский

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Pd‐Doped Co₃O₄ Nanoarray for Efficient Eight‐Electron Nitrate Electrocatalytic Reduction to Ammonia Synthesis

Small, Journal Year: 2023, Volume and Issue: 19(42)

Published: June 17, 2023

Ammonia (NH3 ) is an indispensable feedstock for fertilizer production and one of the most ideal green hydrogen rich fuel. Electrochemical nitrate (NO3- reduction reaction RR) being explored as a promising strategy to synthesize industrial-scale NH3 , which has nonetheless involved complex multi-reaction process. This work presents Pd-doped Co3 O4 nanoarray on titanium mesh (Pd-Co3 /TM) electrode highly efficient selective electrocatalytic NO3- RR at low onset potential. The well-designed Pd-Co3 /TM delivers large yield 745.6 µmol h-1 cm-2 extremely high Faradaic efficiency (FE) 98.7% -0.3 V with strong stability. These calculations further indicate that doping Pd improves adsorption characteristic optimizes free energies intermediates, thereby facilitating kinetics reaction. Furthermore, assembling this catalyst in Zn-NO3- battery realizes power density 3.9 mW excellent FE 98.8% .

Language: Английский

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Recent Advances in Electrocatalytic Nitrate Reduction to Ammonia: Mechanism Insight and Catalyst Design

ACS Sustainable Chemistry & Engineering, Journal Year: 2023, Volume and Issue: 11(21), P. 7965 - 7985

Published: May 16, 2023

Excessive discharge of nitrate pollutants has caused an imbalance in the nitrogen cycle, which threatened human health and ecosystems. Clean electrocatalytic reduction technology can convert into high value-added ammonia to control water pollution, truly realizing "turning waste treasure". This review highlights latest mechanisms proposed by combining situ characterization discusses various intermediates produced during reaction process key steps that determine rate. Meanwhile, four common catalyst synthesis strategies are systematically summarized. These have exhibited preeminent results terms conductivity active sites inhibition side effects. Finally, challenges difficulty (NRA) development main direction future discussed. The engineering for increasing stability performance also aims provide guidance efficient conversion promotes advancement sustainable chemistry.

Language: Английский

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Interfacial Defect Engineering Triggered by Single Atom Doping for Highly Efficient Electrocatalytic Nitrate Reduction to Ammonia

ACS Materials Letters, Journal Year: 2023, Volume and Issue: 5(4), P. 1018 - 1026

Published: March 7, 2023

Electrochemical reduction of nitrate (NO3RR), a widespread water pollutant, to high-valued ammonia is encouraging for sustainable artificial nutrient recycling and environmental-friendly pollution management. However, the limited available catalytic active sites competitive hydrogen evolution make performance still unsatisfactory. In this work, interfacial defect engineering via single atom doping was conducted achieve highly efficient electrocatalytic NO3RR. Upon introduction isolated Fe atoms, abundant oxygen vacancies are generated over atomic interface TiO2, induced charge redistribution triggers formation considerable reduction, which plays crucial role in inhibiting proton promoting adsorption activation nitrate. As expected, modified TiO2 exhibits maximum yield rate 137.3 mg h–1 mgcat.–1 Faradaic efficiency 92.3% at −1.4 V (vs RHE), among best all reported values yet. This work provides valuable insights into exploration electrocatalysts toward through heteroatom interface.

Language: Английский

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