Confining non-porous MOF in amine-functionalized aerogel for efficient sequestration of iodine contaminants

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159595 - 159595

Published: Jan. 1, 2025

Language: Английский

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Brass Phase Determining Selectivity in Urea Electrosynthesis from CO₂ and Nitrate

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 3276 - 3283

Published: Feb. 7, 2025

Language: Английский

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Conductive Metal–Organic Frameworks and Their Electrocatalysis Applications

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: March 9, 2025

Recently, electrically conductive metal–organic frameworks (EC-MOFs) have emerged as a wealthy library of porous with unique properties, allowing their use in diverse applications energy conversion, including electrocatalysis. In this review, the electron conduction mechanisms EC-MOFs are examined, while electrical conductivities considered. There been various strategies to enhance MOFs ligand modification, incorporation conducting materials, and construction multidimensional architectures. With sufficient being established for EC-MOFs, there extensive pursuits electrocatalysis applications, such hydrogen evolution reaction, oxygen reduction N2 CO2 reaction. addition, computational modeling also exerts an important impact on revealing synthesis–structure–performance relationships. Finally, prospects current challenges discussed provide guidelines designing promising framework materials.

Language: Английский

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Tuning C─N Coupling Mode by Cu─In Dual Metal Sites in Covalent Organic Framework for Enhanced Urea Electrosynthesis

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

Published: Jan. 28, 2025

Abstract Electrochemical conversion of CO 2 and NO 3 − to high value‐added urea is a win–win strategy for both resources the environment. However, yield rate selectivity are still low. In this work, Cu metals grafted into interlayers an imine‐linked covalent organic framework (COF) form stable Cu─In dual metal sites by strong coordination hydroxyl O imine N atoms in framework. It found that optimal CuIn 1.07 ‐COF electrocatalyst exhibits impressive 2924.4 µg h −1 mg Faradaic efficiency (FE) 54.7% H‐cell, which surpasses most previously reported catalysts electrosynthesis. situ spectroscopy theoretical calculations reveal due stronger electronic interaction between In, * NH intermediate generated on site from reduction, then couples with neighbor produce lower energy barrier, effectively promotes electrochemical co‐reduction urea. The work provides new clues understanding structure‐performance relationship

Language: Английский

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Tailoring Activation Intermediates of CO₂ Initiates C–N Coupling for Highly Selective Urea Electrosynthesis

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Electrocatalyzed reduction of CO2 and NO3- to synthesize urea is a highly desirable, but challenging reaction. The bottleneck this reaction the C-N coupling intermediates. In particular, uncertainty multielectron intermediates severely affects selectivity activity processes involving multiple electron proton transfers. Here, we present novel tandem catalyst with two compatible single-atom active sites Au Cu on red phosphorus (RP-AuCu) that efficiently converts urea. Experimental theoretical prediction results confirmed center promotes transfer between molecules phosphorus, thereby regulating activation produce electrophilic *COOH. addition, can enhance attack *COOH species *NH2, thus promoting selective formation bonds. Consequently, RP-AuCu exhibited yield 22.9 mmol gcat.-1 h-1 Faraday efficiency 88.5% (-0.6 VRHE), representing one highest levels electrocatalytic synthesis. This work deepens understanding mechanism provides an interesting design approach for efficient sustainable production compounds.

Language: Английский

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Ultralow Ru nanoparticle-loaded Ti4O7 anodes for efficient chlorine evolution and sustainable farm odor spray wastewater treatment

Applied Surface Science, Journal Year: 2025, Volume and Issue: 695, P. 162891 - 162891

Published: March 5, 2025

Language: Английский

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Photocatalytic Formamide Synthesis via Coupling of Electrophilic and Nucleophilic Radicals over Atomically Dispersed Bi Sites

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 22, 2024

Formamide (HCONH

Language: Английский

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Dynamic Control of Asymmetric Charge Distribution for Electrocatalytic Urea Synthesis

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(41)

Published: Aug. 19, 2024

Abstract Constructing dual catalytic sites with charge density differences is an efficient way to promote urea electrosynthesis from parallel and CO 2 reduction yet still challenging in static system. Herein, a dynamic system constructed by precisely controlling the asymmetric distribution Au‐doped coplanar Cu 7 clusters‐based 3D framework catalyst (Au@cpCu CF). In Au@cpCu CF, redistributed between Au atoms changed periodically application of pulse potentials switching −0.2 −0.6 V greatly facilitated urea. Compared condition pristine cpCu CF (FE = 5.10%), FE under pulsed up 55.53%. Theoretical calculations demonstrated that high potential improved adsorption * HNO NH on inhibited reaction pathways by‐products. While at low V, atomic thermodynamic C–N coupling step. This work important role regulation for electrosynthesis, providing new inspiration precise control electrocatalysis.

Language: Английский

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Recent Advances in Urea Electrocatalysis: Applications, Materials and Mechanisms^†

Chinese Journal of Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 26, 2024

Comprehensive Summary Urea plays a vital role in human society, which has various applications organic synthesis, medicine, materials chemistry, and other fields. Conventional industrial urea production process is energy−intensive environmentally damaging. Recently, electrosynthesis offers greener alternative to efficient synthesis involving coupling CO 2 nitrogen sources at ambient conditions, affords an achievable way for diminishing the energy consumption emissions. Additionally, electrolysis, namely electrocatalytic oxidation reaction (UOR), another emerging approach very recently. When with hydrogen evolution reaction, UOR route potentially utilizes 93% less than water electrolysis. Although there have been many individual reviews discussing electrooxidation, critical need comprehensive review on electrocatalysis. The will serve as valuable reference design of advanced electrocatalysts enhance electrochemical electrocatalysis performance. In review, we present thorough two aspects: reaction. We summarize turn recently reported catalyst materials, multiple catalysis mechanisms principles Finally, major challenges opportunities are also proposed inspire further development technology. Key Scientists For electrosynthesis, Furuya et al. firstly investigated coreduction NO 3 − /NO using gas‐diffusion electrodes 1995. Then, Wang effectively achieved C—N bond formation PdCu alloy nanoparticles 2020. Shortly, Yan Yu *CO from *NO intermediates early stage In(OH) electrocatalyst 2021, employed defect engineering strategy facilitate NH protonation 2022. Amal al . Investigated that Cu‐N‐C coordination both RR RR. After that, Zhang's group developed In‐based artificial frustrated Lewis pairs urea, they offered systematic screening 2023. And sargent increased selectivity hybrid catalyst. Stevenson effect Sr substitution toward provided insights into electrooxidation β‐Ni(OH) electrode Qiao elucidated two‐stage pathway 2021.

Language: Английский

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Multifunctional Strategies of Advanced Electrocatalysts for Efficient Urea Synthesis

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 20, 2024

The electrochemical reduction of nitrogenous species (such as N

Language: Английский

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