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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Electrochemical C–N coupling of CO₂and nitrogenous small molecules for the electrosynthesis of organonitrogen compounds

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(6), P. 2193 - 2237

Published: Jan. 1, 2023

Electrochemical C–N coupling reaction by renewable electricity for the electrosynthesis of organonitrogen compounds with abundant CO 2 and nitrogenous small molecules as carbon nitrogen sources, respectively, is a promising sustainable synthetic strategy.

Language: Английский

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Selective electrochemical synthesis of urea from nitrate and CO2 via relay catalysis on hybrid catalysts

Nature Catalysis, Journal Year: 2023, Volume and Issue: 6(10), P. 939 - 948

Published: Sept. 11, 2023

Language: Английский

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Review on Electrocatalytic Coreduction of Carbon Dioxide and Nitrogenous Species for Urea Synthesis

ACS Nano, Journal Year: 2023, Volume and Issue: 17(4), P. 3209 - 3224

Published: Feb. 14, 2023

The electrochemical coreduction of carbon dioxide (CO2) and nitrogenous species (such as NO3–, NO2–, N2, NO) for urea synthesis under ambient conditions provides a promising solution to realize carbon/nitrogen neutrality mitigate environmental pollution. Although an increasing number studies have made some breakthroughs in synthesis, the unsatisfactory Faradaic efficiency, low yield rate, ambiguous C–N coupling reaction mechanisms remain major obstacles its large-scale applications. In this review, we present recent progress on based CO2 aqueous solutions conditions, providing useful guidance discussion rational design metal nanocatalyst, understanding mechanism, existing challenges prospects synthesis. We hope that review can stimulate more insights inspiration toward development electrocatalytic technology.

Language: Английский

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Lattice Strain Engineering of Ni₂P Enables Efficient Catalytic Hydrazine Oxidation‐Assisted Hydrogen Production

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(42)

Published: July 11, 2023

Hydrazine-assisted water electrolysis provides new opportunities to enable energy-saving hydrogen production while solving the issue of hydrazine pollution. Here, synthesis compressively strained Ni2 P as a bifunctional electrocatalyst for boosting both anodic oxidation reaction (HzOR) and cathodic evolution (HER) is reported. Different from multistep synthetic method that induces lattice strain by creating core-shell structures, facile strategy developed tune via dual-cation co-doping. The obtained with compressive -3.62% exhibits significantly enhanced activity HzOR HER than counterparts tensile without strain. Consequently, optimized delivers current densities 10 100 mA cm-2 at small cell voltages 0.16 0.39 V hydrazine-assisted electrolysis, respectively. Density functional theory (DFT) calculations reveal promotes dissociation concurrently tunes adsorption strength intermediates, thereby facilitating process on P. As HzOR, reduces energy barrier potential-determining step dehydrogenation *N2 H4 H3 . Clearly, this work paves pathway lattice-strained electrocatalysts

Language: Английский

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High-efficiency electrosynthesis of urea over bacterial cellulose regulated Pd–Cu bimetallic catalyst

EES Catalysis, Journal Year: 2022, Volume and Issue: 1(1), P. 45 - 53

Published: Oct. 28, 2022

PdCu/CBC exhibited a remarkable R urea of 763.8 ± 42.8 μg h −1 mg cat. at −0.50 V ( vs. RHE) and an exceptional FE 69.1 3.8% −0.40 RHE). Taking advantage operando spectroscopy characterization, the C–N coupling mechanism was verified.

Language: Английский

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Emerging p-Block-Element-Based Electrocatalysts for Sustainable Nitrogen Conversion

ACS Nano, Journal Year: 2022, Volume and Issue: 16(10), P. 15512 - 15527

Published: Oct. 14, 2022

Artificial nitrogen conversion reactions, such as the production of ammonia via dinitrogen or nitrate reduction and synthesis organonitrogen compounds C–N coupling, play a pivotal role in modern life. As alternatives to traditional industrial processes that are energy- carbon-emission-intensive, electrocatalytic reactions under mild conditions have attracted significant research interests. However, electrosynthesis process still suffers from low product yield Faradaic efficiency, which highlight importance developing efficient catalysts. In contrast transition-metal-based catalysts been widely studied, p-block-element-based recently shown promising performance because their intriguing physiochemical properties intrinsically poor hydrogen adsorption ability. this Perspective, we summarize latest breakthroughs development electrocatalysts toward applications, including N2 urea using nitrogen-containing feedstocks carbon dioxide. The catalyst design strategies underlying reaction mechanisms discussed. Finally, major challenges opportunities future directions also proposed.

Language: Английский

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Carbon‐Anchored Molybdenum Oxide Nanoclusters as Efficient Catalysts for the Electrosynthesis of Ammonia and Urea

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(19)

Published: March 13, 2023

Abstract The electrochemical NO 3 − reduction and its coupling with CO 2 can provide novel clean routes to synthesize NH urea, respectively. However, their practical application is still impeded by the lack of efficient catalysts desirable Faradaic efficiency (FE) yield rate. Herein, we report synthesis molybdenum oxide nanoclusters anchored on carbon black (MoO x /C) as electrocatalyst. It affords an outstanding FE 98.14 % rate 91.63 mg h −1 cat. in reduction. Besides, highest 27.7 a maximum urea 1431.5 μg toward also achieved. formation electron‐rich MoO highly unsaturated metal sites /C heterostructure beneficial for enhanced catalytic performance. Studies mechanism reveal that stabilization *NO *CO NOOH intermediates are critical synthesis,

Language: Английский

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Review on strategies for improving the added value and expanding the scope of CO₂ electroreduction products

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(10), P. 5149 - 5189

Published: Jan. 1, 2024

This review summarizes promising strategies including the design of catalysts and construction coupled electrocatalytic reaction systems, aimed at achieving selective production various products from CO 2 electroreduction.

Language: Английский

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Pulsed co-electrolysis of carbon dioxide and nitrate for sustainable urea synthesis

Nature Sustainability, Journal Year: 2024, Volume and Issue: 7(4), P. 442 - 451

Published: Feb. 26, 2024

Language: Английский

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