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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Electrochemical Nitrate Reduction: Ammonia Synthesis and the Beyond

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(17)

Published: June 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

Language: Английский

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

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(16)

Published: Jan. 11, 2024

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

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

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(7), P. 2991 - 3001

Published: Jan. 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.

Language: Английский

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Inter‐Metal Interaction of Dual‐Atom Catalysts in Heterogeneous Catalysis

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(42)

Published: June 14, 2023

Dual-atom catalysts (DACs) have been a new frontier in heterogeneous catalysis due to their unique intrinsic properties. The synergy between dual atoms provides flexible active sites, promising enhance performance and even catalyze more complex reactions. However, precisely regulating site structure uncovering dual-atom metal interaction remain grand challenges. In this review, we clarify the significance of inter-metal DACs based on understanding center structures. Three diatomic configurations are elaborated, including isolated single-atom, N/O-bridged dual-atom, direct dual-metal bonding interaction. Subsequently, up-to-date progress oxidation reactions, hydrogenation/dehydrogenation electrocatalytic photocatalytic reactions summarized. structure-activity relationship catalytic is then discussed at an atomic level. Finally, challenges future directions engineer discussed. This review will offer prospects for rational design efficient toward catalysis.

Language: Английский

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Homonuclear dual-atom catalysts embedded on N-doped graphene for highly efficient nitrate reduction to ammonia: From theoretical prediction to experimental validation

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 339, P. 123156 - 123156

Published: Aug. 7, 2023

Language: Английский

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Cu1‐Fe Dual Sites for Superior Neutral Ammonia Electrosynthesis from Nitrate

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(31)

Published: May 21, 2024

Abstract The electrochemical nitrate reduction reaction (NO 3 RR) is able to convert − ) into reusable ammonia (NH ), offering a green treatment and resource utilization strategy of wastewater synthesis. conversion NO NH undergoes water dissociation generate active hydrogen atoms nitrogen‐containing intermediates hydrogenation tandemly. two relay processes compete for the same sites, especially under pH‐neutral condition, resulting in suboptimal efficiency selectivity electrosynthesis from . Herein, we constructed Cu 1 ‐Fe dual‐site catalyst by anchoring single on amorphous iron oxide shell nanoscale zero‐valent (nZVI) RR, achieving an impressive removal 94.8 % 99.2 neutral pH concentration 50 mg L −1 −N conditions, greatly surpassing performance nZVI counterpart. This superior can be attributed synergistic effect enhanced adsorption Fe sites strengthened activation single‐atom decreasing energy barrier rate‐determining step *NO‐to‐*NOH. work develops novel fabricating catalysts enhance , presents environmentally sustainable approach treatment.

Language: Английский

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Materials Containing Single‐, Di‐, Tri‐, and Multi‐Metal Atoms Bonded to C, N, S, P, B, and O Species as Advanced Catalysts for Energy, Sensor, and Biomedical Applications

Advanced Science, Journal Year: 2024, Volume and Issue: 11(33)

Published: July 1, 2024

Abstract Modifying the coordination or local environments of single‐, di‐, tri‐, and multi‐metal atom (SMA/DMA/TMA/MMA)‐based materials is one best strategies for increasing catalytic activities, selectivity, long‐term durability these materials. Advanced sheet supported by metal atom‐based have become a critical topic in fields renewable energy conversion systems, storage devices, sensors, biomedicine owing to maximum utilization efficiency, precisely located centers, specific electron configurations, unique reactivity, precise chemical tunability. Several offer excellent support are attractive applications energy, medical research, such as oxygen reduction, production, hydrogen generation, fuel selective detection, enzymatic reactions. The strong metal–metal metal–carbon with metal–heteroatom (i.e., N, S, P, B, O) bonds stabilize optimize electronic structures atoms due interfacial interactions, yielding activities. These provide models understanding fundamental problems multistep This review summarizes substrate structure‐activity relationship different active sites based on experimental theoretical data. Additionally, new synthesis procedures, physicochemical characterizations, biomedical discussed. Finally, remaining challenges developing efficient SMA/DMA/TMA/MMA‐based presented.

Language: Английский

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Vinylene‐linked Donor‐π‐Acceptor Metal‐Covalent Organic Framework for Enhanced Photocatalytic CO2 Reduction

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(48)

Published: Sept. 3, 2024

Abstract Intramolecular charge separation driving force and linkage chemistry between building blocks are critical factors for enhancing the photocatalytic performance of metal‐covalent organic framework (MCOF) based photocatalyst. However, robust achieving both simultaneously has yet to be challenging despite ongoing efforts. Here we develop a fully π‐conjugated vinylene‐linked multivariate donor‐π‐acceptor MCOF (D‐π‐A, termed UJN‐1) by integrating benzyl cyanides linker with multiple functional electron‐rich triphenylamine electron‐deficient copper‐cyclic trinuclear units (Cu‐CTUs) moieties, featuring strong intramolecular force, extended conjugation degree skeleton, abundant active sites. The incorporation Cu‐CTUs acceptor electron‐withdrawing ability concomitantly giant can efficiently accelerate photogenerated electrons transfer from Cu‐CTUs, revealing experiments theoretical calculations. Benefiting synergistically effect D‐π‐A configuration vinylene linkage, highly‐efficient spatial is achieved. Consequently, UJN‐1 exhibits an excellent CO formation rate 114.8 μmol g −1 in 4 h without any co‐catalysts or sacrificial reagents under visible light, outperforming those analogous MCOFs imine‐linked (UJN‐2, 28.9 ) COF Cu‐CTU sites (UJN‐3, 50.0 ), emphasizing role designing novel COFs‐based

Language: Английский

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