Effects of Ionic Interferents on Electrocatalytic Nitrate Reduction: Mechanistic Insight

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(29), P. 12823 - 12845

Published: July 2, 2024

Nitrate, a prevalent water pollutant, poses substantial public health concerns and environmental risks. Electrochemical reduction of nitrate (eNO

Language: Английский

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Advance of self-cleaning separation membranes for oil-containing wastewater treatment

Environmental Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 1, 2024

The formidable challenge of membrane fouling by high-viscosity oils remains a primary impediment to the sustainable application separation membranes in treating oil-contaminated wastewater. Consequently, there is an imperative for development wastewater treatment endowed with self-cleansing capabilities. current review aims delineate landscape tailored Embarking from foundational theories and benchmarks self-cleansing, functionalities were classified into active passive modalities. We encapsulate strides made research, encompassing domains such as super-wettable surfaces, synchronously filtered post-filtration high-efficiency while concurrently identifying extant constraints prospective trajectories. By meticulously categorizing dissecting functionalities, aim this work delving fundamental tenets within intended wastewater, furnishing guidance design advancement oil-water membranes.

Language: Английский

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Regulation of Active Hydrogen and Nitrate Concentration: Pulsed Potential Strategies in Nitrate Electroreduction Microenvironments

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 20, 2025

The electrochemical reduction of nitrate (NO₃RR) plays a significant role in the nitrogen cycle and environmental remediation. dynamics active hydrogen NO₃RR were studied depth by varying concentration applying pulsed-potential approach. effect both factors on regulation degree hydrogenation intermediates product distribution was evaluated. Density functional theory (DFT) calculations indicated that elevated levels decrease energy barrier for *NO to *N conversion, enhancing *N₂ formation. experimental results indicate under high concentrations, copper-palladium (CuPd) catalysts exhibit faster reaction kinetics higher selectivity. In-situ characterizations illuminated critical intermediates. CuPd catalyst achieved 95% NO₃-N conversion 99% N₂ selectivity at 1 M pulse potential modulation surface. Finite element analysis (FEA) verified pulsed potentials modulate local ion concentrations. present work brings closer practical applications, aiding protection balance cycle.

Language: Английский

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Pulsed Electrochemical Degradation of Micropollutants via In Situ Generated Sulfate Radical: Rapid Reaction Kinetics and Low Energy Requirement

ACS ES&T Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Language: Английский

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Rational electrocatalyst design for selective nitrate reduction to ammonia

Chemical Physics Reviews, Journal Year: 2025, Volume and Issue: 6(1)

Published: Feb. 26, 2025

The electrocatalytic nitrate (NO3−) reduction reaction (NO3RR) is an attractive strategy for sustainable ammonia (NH3) synthesis, contributing to the artificial nitrogen cycle and renewable energy storage. However, selective conversion of NO3− NH3 remains challenging due complex multi-electron transfer processes, which result in numerous by-products, low yield rate, Faradaic efficiency. Additionally, electrochemical sensitivity catalyst structure complicates identifying active sites. Herein, we introduce mechanisms situ characterization technologies NO3RR production. Then, a summary theoretical research advances guide design catalyst, including density functional theory calculations, activity descriptors, machine learning. Furthermore, discuss strategies optimize performance NO3RR, focusing on nitrogenous-intermediate adsorption, proton tandem catalysis. Finally, challenges opportunities highly efficient are summarized.

Language: Английский

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Nanoconfined catalytic membranes assembled by cobalt-loaded carbon nanotubes and graphene oxide for highly efficient water decontamination

Journal of Membrane Science, Journal Year: 2024, Volume and Issue: 707, P. 123002 - 123002

Published: June 17, 2024

Language: Английский

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Electroreduction of nitrate to ammonia on graphyne-based single-atom catalysts by combined density functional theory and machine learning study

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 354, P. 129422 - 129422

Published: Aug. 30, 2024

Language: Английский

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Sludge-derived hydrochar modulates complete nonradical electron transfer in peroxydisulfate activation via pyrrolic-N and carbon defect: Implication for degrading electron-rich ionizable anilines compounds

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 479, P. 135724 - 135724

Published: Sept. 3, 2024

Language: Английский

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Enhanced electrocatalytic nitrate reduction via carbon material integration between Cu and Ni-foam: Mechanisms and performance analysis

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 354, P. 129212 - 129212

Published: Aug. 14, 2024

Language: Английский

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Electronic regulation of Ru electrocatalyst for enhanced atomic hydrogen generation and selective chlorophenol hydrogenation

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: unknown, P. 124958 - 124958

Published: Dec. 1, 2024

Language: Английский

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