Nitrogen-doped hierarchical porous carbon derived from CO2 for the high-performance cathode of lithium-sulfur battery

Electrochimica Acta, Journal Year: 2025, Volume and Issue: unknown, P. 145867 - 145867

Published: Feb. 1, 2025

Language: Английский

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Mesoporous Boron‐Doped Carbon with Curved B₄C Active Sites for Highly Efficient H₂O₂ Electrosynthesis in Neutral Media and Air‐Supplied Environments

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

Abstract Hydrogen peroxide (H 2 O ) electrosynthesis via the 2e − oxygen reduction reaction (ORR) is considered as a cost‐effective and safe alternative to energy‐intensive anthraquinone process. However, in more practical environments, namely, use of neutral media air‐fed cathode slow ORR kinetics insufficient supply pose significant challenges efficient H production at high current densities. In this work, mesoporous B‐doped carbons with novel curved B 4 C active sites, synthesized carbon dioxide (CO using pore‐former agent, simultaneously achieve excellent activity improved mass transfer properties are introduced. Through combination experimental analysis theoretical calculations, it confirmed that configuration, formed by mesopores carbon, demonstrates superior selectivity for due its weaker interaction *OOH intermediates compared planar media. Moreover, facilitate suppress hydrogen evolution reaction, achieving Faradaic efficiency 86.2% 150 mA cm −2 under air‐supplied conditions, along an impressive utilization 93.6%. This approach will provide route catalyst design environment.

Language: Английский

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Silver-incorporated NH2-MIL-101(Cr) electrode for highly efficient iodide removal through pseudocapacitive deionization

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 364, P. 132360 - 132360

Published: March 4, 2025

Language: Английский

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Enhanced Hydrate Growth Kinetics with Hydrate Seeds and Promoter under a Static Reaction System

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

This work provides fundamental insights into methane hydrate growth kinetics from cyclopentane (CP) seeds with a surface-active promoter of sodium dodecyl sulfate (SDS) or l-methionine under static formation system. The gas consumption rate and the apparent constant were determined kinetic model during at 275 K 7 MPa conditions. quantity preconstructed promoters was adjusted reaction As CP SDS have synergetic effect on promoting heterogeneous nucleation for growth, initial constant, calculated rates, indicating number sites where occurs, increased higher seed amounts 200 500 ppm SDS. However, increasing amount 1000 does not improve kinetics. l-methionine, one hydrophobic amino acids utilized as promoter, did significantly decrease interfacial tension between aqueous phase. With increase because limited conversion liquid to small sites. overall storage capacity in system due both lowered enhanced water-to-hydrate conversion. These findings provide understanding guidelines optimizing processes enhance storage.

Language: Английский

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Metal-free catalysts for hydrogen peroxide production with electrocatalysis and photocatalysis

Chemical Engineering Science, Journal Year: 2025, Volume and Issue: unknown, P. 121621 - 121621

Published: April 1, 2025

Language: Английский

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Recent Strategies of Oxygen Carrier Design in Chemical Looping Processes for Inherent CO2 Capture and Utilization

Korean Journal of Chemical Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 17, 2024

Abstract Chemical looping processes are considered a promising pathway for the efficient production of various fuels and chemicals. Temporally or spatially separated reduction oxidation reaction in chemical can offer advantages such as enhancing energy efficiency, surpassing equilibrium limitations, eliminating need separation. However, efficiency process highly depends on performance oxygen carrier. Higher gas conversion increase separation higher solid reduce amount cycled The indicators related to thermodynamic properties carriers their redox kinetics. This review introduces some key articles recent achievements enhancement properties. different research strategies discussed stoichiometric non-stoichiometric carriers. Through rational design carrier material, an energy-efficient is possible.

Language: Английский

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Reconstructed fluorine doped perovskites for electrocatalytic urea production through reaction pathways with CO2 and nitrate ions

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: unknown, P. 124974 - 124974

Published: Dec. 1, 2024

Language: Английский

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