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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Recent progress and strategies on the design of catalysts for electrochemical ammonia synthesis from nitrate reduction

Inorganic Chemistry Frontiers, Год журнала: 2023, Номер 10(12), С. 3489 - 3514

Опубликована: Янв. 1, 2023

Ammonia (NH3) is an essential raw material in the production of fertilizers and a promising carbon-free energy carrier, however, its synthesis still depends on energy- capital-intensive Haber–Bosch process. Recently, electrochemical N2 reduction reaction has attracted significant interest as emerging method for NH3 under ambient conditions. However, limited solubility aqueous electrolyte strong NN bonds result low yield rate, inferior faradaic efficiency unsatisfactory selectivity, impeding further practical application. Considering high water nitrate (NO3−), NO3− (NO3−RR) become fascinating route achieving sustainable NH3, enormous progress been made this field. As consequence, review discusses mechanism systematically summarizes recent development electrocatalysts NO3−RR, including noble-metal-based materials, single-atom metal catalysts, transition-metal-based catalysts. Diverse design strategies catalysts to boost NO3−RR performance, such defect engineering, rational structure design, strain engineering constructing heterostructures, are discussed. This followed by illustration how robust understanding optimization affords fundamental insights into efficiency, selectivity electrocatalysts. Finally, we conclude with future perspectives critical issues, challenges research directions high-efficiency selective NH3.

Язык: Английский

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Recent Advance in Heterogenous Electrocatalysts for Highly Selective Nitrite Reduction to Ammonia Under Ambient Condition

Small Structures, Год журнала: 2023, Номер 4(11)

Опубликована: Июль 23, 2023

Industrial ammonia production mainly relies on the conventional Haber–Bosch process accompanied by high energy consumption and plentiful carbon dioxide emissions, which triggered recent interest to explore more energy‐efficient environmentally benign alternatives. Very recently, electrochemical nitrite reduction in an aqueous medium promises new opportunities for advanced, energy‐efficient, sustainable at ambient conditions. The formation rate Faradic efficiency are strongly associated with adopted electrocatalysts; therefore, striving high‐efficient electrocatalysts is key via reaction. Herein, a critical overview of advances reaction presented, highlighting latest innovative heterogenous including noble metal catalysts, transition‐metal‐based their compounds. Meanwhile, possible pathway electroreduction ammonia, detection, catalytic activity descriptor briefly summarized. Finally, perspective research challenges that convert outlined, increasing contributions route realizing neutral footprint.

Язык: Английский

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In Situ Formation ZnIn₂S₄/Mo₂TiC₂ Schottky Junction for Accelerating Photocatalytic Hydrogen Evolution Kinetics: Manipulation of Local Coordination and Electronic Structure

Small, Год журнала: 2023, Номер 19(24)

Опубликована: Март 15, 2023

Regulating electronic structures of the active site by manipulating local coordination is one advantageous means to improve photocatalytic hydrogen evolution (PHE) kinetics. Herein, ZnIn2 S4 /Mo2 TiC2 Schottky junctions are designed be constructed through interfacial In3+ with electronegative O terminal group on Mo2 based different work functions. Kelvin probe force microscopy and charge density difference reveal that an unidirectional transport channel across interface from established formed nucleophilic/electrophilic region. The increased electron inhibits backflow electrons, boosts transfer separation, optimizes adsorption energy. Therefore, photocatalyst exhibits a superior PHE rate 3.12 mmol g-1 h-1 under visible light, reaching 3.03 times pristine . This provides some insights inspiration for preparing MXene-based catalysts accelerate

Язык: Английский

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

Small, Год журнала: 2023, Номер 19(42)

Опубликована: Июнь 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% .

Язык: Английский

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Single Atom Environmental Catalysis: Influence of Supports and Coordination Environments

Advanced Functional Materials, Год журнала: 2023, Номер 33(50)

Опубликована: Авг. 27, 2023

Abstract Single‐atom catalysts (SACs) are desirable in environmental catalysis due to friendliness, structural stability, and maximum utilization of active metal sites. Extensive research has compared the catalytic performance between SACs with different single‐atom metals. However, their is also highly dependent on supports, which play an important role modulating local coordination environment SACs. Unfortunately, a comprehensive review that systematically discusses relationship supports environment, as well combined effects scare. In this review, three widely investigated applications including advanced oxidation processes (AOPs), mainly Fenton Fenton‐like reactions, nitrate reduction reaction (NO 3 RR) focused. By correlating characterization results, performances, computational environments reactivity examined detail, from origin pathways AOPs NO RR attempted reveal. Finally look forward for potential opportunities challenges on‐demand applications, provided.

Язык: Английский

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Work Function‐Guided Electrocatalyst Design

Advanced Materials, Год журнала: 2024, Номер 36(29)

Опубликована: Апрель 29, 2024

Abstract The development of high‐performance electrocatalysts for energy conversion reactions is crucial advancing global sustainability. design catalysts based on their electronic properties (e.g., work function) has gained significant attention recently. Although numerous reviews electrocatalysis have been provided, no such reports function‐guided electrocatalyst are available. Herein, a comprehensive summary the latest advancements in diverse electrochemical applications provided. This includes function‐based catalytic activity descriptors, and both monolithic heterostructural catalysts. measurement function first discussed descriptors various fully analyzed. Subsequently, function‐regulated material‐electrolyte interfacial electron transfer (IET) employed catalyst design, methods regulating optimizing performance discussed. In addition, key strategies tuning function‐governed material‐material IET examined. Finally, perspectives determination, put forward to guide future research. paves way rational efficient sustainable applications.

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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Efficient Electrochemical Co‐Reduction of Carbon Dioxide and Nitrate to Urea with High Faradaic Efficiency on Cobalt‐Based Dual‐Sites

Advanced Materials, Год журнала: 2024, Номер 36(25)

Опубликована: Апрель 2, 2024

Abstract Renewable electricity‐powered nitrate/carbon dioxide co‐reduction reaction toward urea production paves an attractive alternative to industrial processes and offers a clean on‐site approach closing the global nitrogen cycle. However, its large‐scale implantation is severely impeded by challenging C–N coupling requires electrocatalysts with high activity/selectivity. Here, cobalt‐nanoparticles anchored on carbon nanosheet (Co NPs@C) are proposed as catalyst electrode boost yield Faradaic efficiency (FE) electrosynthesis enhanced coupling. Such Co NPs@C renders superb urea‐producing activity FE reaching 54.3% of 2217.5 µg h −1 mg cat. , much superior NPs C counterparts, meanwhile shows strong stability. The affords rich catalytically active sites, fast reactant diffusion, sufficient catalytic surfaces‐electrolyte contacts favored charge ion transfer efficiencies. theoretical calculations reveal that high‐rate formation *CO *NH 2 intermediates crucial for facilitating synthesis.

Язык: Английский

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