Boosted Nitrate and CO₂ Reduction for Urea Electrosynthesis on p-Block Bi Dispersed Ru Alloys

ACS Sustainable Chemistry & Engineering, Год журнала: 2025, Номер unknown

Опубликована: Фев. 10, 2025

Язык: Английский

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Electrocatalytic Urea Production with Nitrate and CO₂ on a Ru‐Dispersed Co Catalyst

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Авг. 12, 2024

Abstract Urea electrosynthesis from co‐electrolysis of NO 3 − and CO 2 (UENC) provides an alternative route for realizing efficient sustainable urea production. In this work, single‐atom Ru dispersed on Co (Ru 1 Co) is demonstrated as effective robust catalyst the UENC. situ spectroscopic measurements theoretical simulations unravel cooperative effect sites to promote UENC process via a tandem catalysis mechanism, where site activates adsorption hydrogenation form * NH , while hydrogenation/deoxygenation CO. The generated then transferred nearby which promotes C─N coupling toward formation. Strikingly, assembled in flow cell shows highest urea‐Faradaic efficiency 50.1% with corresponding yield rate 22.34 mmol h −1 g at −0.5 V (RHE), superior most reported catalysts

Язык: Английский

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Boron‐Doped Ti₃C₂T_x MXene for Effective and Durable High‐Current‐Density Ammonia Synthesis

Small, Год журнала: 2024, Номер 20(45)

Опубликована: Июль 24, 2024

Abstract Ammonia (NH 3 ) synthesis via the nitrate reduction reaction (NO RR) offers a competitive strategy for nitrogen cycling and carbon neutrality; however, this is hindered by poor NO RR performance under high current density. Herein, it shown that boron‐doped Ti C 2 T x MXene nanosheets can highly efficiently catalyze conversion of RR‐to‐NH at ambient conditions, showing maximal NH Faradic efficiency 91% with peak yield rate 26.2 mgh −1 mg cat. , robust durability over ten consecutive cycles, all them are comparable to best‐reported results exceed those pristine MXene. More importantly, when tested in flow cell, designed catalyst delivers density ‒1000 mA cm −2 low potential ‒1.18 V versus reversible hydrogen electrode maintains selectivity wide range. Besides, Zn–nitrate battery as cathode assembled, which achieves power 5.24 mW 1.15 . Theoretical simulations further demonstrate boron dopants optimize adsorption activation intermediates, reduce potential‐determining step barrier, thus leading an enhanced selectivity.

Язык: Английский

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Electrocatalysts with atomic-level site for nitrate reduction to ammonia

Journal of Energy Chemistry, Год журнала: 2024, Номер 96, С. 642 - 668

Опубликована: Май 27, 2024

Язык: Английский

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Core–Shell Engineering Boosted Active Hydrogen Generation in Cu_2–xS/MoS₂ Quantum Dots for Efficient Electrocatalytic Nitrate Reduction to Ammonia

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(15), С. 5979 - 5990

Опубликована: Апрель 1, 2024

The electrochemical nitrate reduction reaction (NO3RR) emerges as a promising method for ammonia (NH3) production, which faces the dilemma of inhibiting hydrogen evolution (HER) and promoting active (Hads) supply hydrogenation nitrogen intermediates. Here, core–shell structure engineering strategy is developed Cu2–xS/MoS2, where strong Hads adsorption storage capacity can accelerate As result, an eminent NH3 yield 0.178 mmol h–1 cm–2 Faradaic efficiency 84.5% were achieved. A series tests demonstrate that tuning Cu2–xS/MoS2 interface improve activity conversion NO2–, while avoiding HER effectively retain Hads. density functional theory calculation further demonstrates has *H retention ability to promote NO3RR process. This work offers novel perspective on manipulation generation NO3RR.

Язык: Английский

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Co nanoparticle-decorated radix cynanchi daniculati-derived carbon for efficient electrocatalytic nitrite reduction to ammonia

Catalysis Science & Technology, Год журнала: 2024, Номер 14(11), С. 3007 - 3011

Опубликована: Янв. 1, 2024

As an efficient catalyst for NH 3 production via NO 2 − reduction, Co nanoparticles decorated radix cynanchi paniculati-derived carbon exhibits a high faradaic efficiency of 92.77% with yield 1235.62 μmol h −1 cm −2 at −0.8 V.

Язык: Английский

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In situ/Operando Investigation for Heterogeneous Electro-Catalysts: From Model Catalysts to State-of-the-Art Catalysts

ACS Energy Letters, Год журнала: 2024, Номер 9(9), С. 4414 - 4440

Опубликована: Авг. 17, 2024

Electrochemical reactions, including water splitting, oxygen reduction, hydrogen oxidation, carbon dioxide nitrogen oxide etc., are critical for sustainable energy conversion and storage. Achieving high efficiency in these reactions requires catalysts with superior activity, selectivity, stability, often realized through nanostructured metal catalysts. However, practical challenges such as low selectivity catalytic degradation persist. In situ operando characterization techniques offer real-time insights into catalyst behavior under reaction conditions, enabling a deeper understanding of structure–performance relationships and, therefore, guiding the design optimization electro-catalysts. This review discusses common situ/operando techniques, highlights their applications model catalysts, single-atom single-crystal further explores combinational analysis to study complex nanocatalysts. Finally, we provide suggestions perspectives on development advance field electrochemical catalysis.

Язык: Английский

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Improving nitric oxide reduction reaction through surface doping on superstructures

Nano Energy, Год журнала: 2024, Номер 123, С. 109396 - 109396

Опубликована: Фев. 14, 2024

Язык: Английский

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Strategic regulation of nitrogen-containing intermediates for enhanced nitrate reduction over Co3O4/SiC catalyst having multiple active centers

Journal of Energy Chemistry, Год журнала: 2024, Номер 96, С. 291 - 299

Опубликована: Май 10, 2024

Язык: Английский

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A recent review on photochemical and electrochemical nitrogen reduction to ammonia: Strategies to improve NRR selectivity and faradaic efficiency

Applied Materials Today, Год журнала: 2024, Номер 39, С. 102253 - 102253

Опубликована: Июнь 8, 2024

Язык: Английский

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