Boosting Fe3+/Fe2+ cycling under visible-light-driven TiO2-based membrane with electron-deficient center for wastewater decontamination

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125070 - 125070

Published: Jan. 1, 2025

Language: Английский

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Nitrogen Defects and Interfacial Chemical Bonds in Fe Single‐Site Mediated C₃N₄ With Rod‐Like Fe₂O₃ Enhanced the S‐Scheme Heterojunction for Efficient Energy Conversion

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

Published: Jan. 16, 2025

Abstract The rational design of S‐scheme heterojunctions holds significant potential for efficient photocatalytic energy conversion, attributed to their enhanced carrier separation efficiency and high redox capacity. Nevertheless, achieving precise control transfer dynamics in remains a substantial challenge. Herein, unique architecture is devised featuring porous rod‐shaped Fe 2 O 3 particles loaded onto single‐sites modified g‐C N 4 nanosheets via mediated heterocomponent anchorage, the directed growth using as anchoring points, thereby forming O─Fe─N interfacial chemical bonds (ICBs) generating abundant nitrogen defects (FeO/FeCN‐N v ). Photophysical processes are further investigated femtosecond transient absorption spectroscopy (fs‐TAS) situ irradiated X‐ray photoelectron (ISI‐XPS) with an adjustable wavelength irradiation light source. Encouragingly, results reveal internal electric field (IEF) constructed at these semicoherent phase boundaries, creating asymmetrical charge distribution. Simultaneously, introduce additional defect level that accelerates electron through IEF, enabling more rapid migration surface‐active sites both styrene epoxidation hydrogen evolution. synergistic effect ICBs coupling regulating offers new insights into photocatalysis, paving way advancements conversion.

Language: Английский

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A Core-Shell Confinement Strategy Towards Single-Atom Fe-N/S-C Bifunctional Catalyst for Selective Nitroarene Reduction and Olefin Epoxidation

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: 1012, P. 178488 - 178488

Published: Jan. 1, 2025

Language: Английский

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Tailoring the Coordination Environment of Cu Single Atoms for Achieving Regioselective C–C Bond Activation of Amides

ACS Catalysis, Journal Year: 2024, Volume and Issue: unknown, P. 18408 - 18418

Published: Dec. 2, 2024

C–C bond activation can provide a direct reconstruction strategy of carbon skeletons to furnish number structurally diverse molecules. In general, regioselectivity represents the state-of-the-art owing existence several different carbon–carbon bonds, having high BDE, ∼90 kcal/mol. Here, we report directed for amides concise synthesis range urea derivatives and carbamates via regioselective enabled by heterogeneous single-atom copper catalyst (Cu-SAC), with turnover frequency 249 h–1, which is 19 times higher than that analogous homogeneous catalyst. Multitechnique characterization data show Cu species are associated an unsaturated coordination structure plentiful oxygen vacancies on γ-Al2O3 facilitate adsorption multiple coordinated dioxygen, leading catalytic activity selectivity. It would offer opportunities speed up heterogenized process catalysts in inert-bond reactions.

Language: Английский

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Ruthenium(II)-Catalyzed Synthesis of N-Heterocycles via Ac-ceptorless Dehydrogenative Condensation

Journal of Organometallic Chemistry, Journal Year: 2025, Volume and Issue: 1029, P. 123545 - 123545

Published: Jan. 31, 2025

Language: Английский

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A Comprehensive Investigation of Diverse Synthetic Methodologies for Constructing Quinoline Frameworks: A Critical Overview

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(10)

Published: March 1, 2025

Abstract Recently, quinoline has emerged as a critical heterocyclic structure, attracting attention for its diverse industrial and synthetic organic chemistry applications. This compound is essential developing novel lead compounds in drug discovery extensively studied therapeutic derivatives medicinal chemistry. An extensive body of literature details the methodologies synthesizing this key scaffold functionalization to enhance biological efficacy. Numerous synthesis protocols have been documented, highlighting significance ongoing chemical research. These include various strategies, such transition metal‐catalyzed reactions environmentally sustainable processes, which are crucial constructing functionalizing derivatives. review aims systematically examine procedures findings, addressing limitations these pathways their environmental impacts. Additionally, curated selection quinolines will be presented.

Language: Английский

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Ru-CNP Complex-Catalyzed Hydrogen Transfer/Annulation Reaction of 2-Nitrobenzylalcohol via an Outer-Sphere Mechanism

The Journal of Organic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

The development of efficient catalysts plays a central role in advancing chemical reactions. In this study, ruthenium complex modified with N-heterocyclic carbene-imine-phosphine ligand (CNP) was employed to enhance the hydrogen transfer/annulation process 2-nitrobenzyl alcohols various primary or secondary alcohols. NMR and HRMS analyses reaction solution revealed situ formation [fac-RuH(CO)(PPh3)(κ3-CN(H)P)]Cl through transfer hydrogenation imine moiety within CNP under conditions. This species, bifunctional Noyori-type featuring facial coordination CN(H)P ligand, served as key catalytic intermediate. By leveraging outer-sphere mechanism facilitated by [fac-RuH(CO)(PPh3)(κ3-CN(H)P)]Cl, synthesis 75 quinolines from wide range has been achieved yields high 95%.

Language: Английский

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Porous Organic Polymer-Supported Palladium Catalyst for Reactive Oxygen Species-Mediated Sustainable One-Pot Flavones Synthesis

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

Language: Английский

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Nitrogen-doped carbon bilayer flow-through electrocatalytic membrane based on transition metal single atoms: Simultaneous generation and activation of H2O2 for ibuprofen degradation

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162950 - 162950

Published: April 1, 2025

Language: Английский

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Synthesis and electrochemical performance of single-atom catalysts derived from metal-organic frameworks

Chinese Journal of Chemical Physics, Journal Year: 2025, Volume and Issue: 38(2), P. 125 - 139

Published: April 1, 2025

Single-atom catalysts (SACs), as the rising stars in field of catalytic science, are leading technology into an unprecedented new era. However, synthesis high-performance SACs with well-de-fined active sites and high loadings under precise control has become a hotly debated topic scientific research. Metal-organic frameworks (MOFs), their exceptional properties such ultrahigh specific surface areas, precisely controllable structural designs, highly flexible functional customization capabilities, regarded one ideal matrices for supporting stabilizing SACs. This review provides in-sightful overview diverse preparation strategies MOFs-derived It comprehensively analyzes unique advantages challenges each method achieving efficient SACs, emphasizing crucial role optimized processes unlocking anticipated performance Furthermore, this delves series advanced characterization techniques, including aberration-corrected scanning transmission electron microscopy (AC-STEM), energy loss spectroscopy (EELS), X-ray absorption (XAS), infrared (IRAS), offering valuable insights atomic-scale fine structures significantly advancing understanding SAC mechanisms. Moreover, focuses on exploring potential applications electrocatalysis frontier fields. comprehensive examination lays solid theoretical foundation directional guidance rational design

Language: Английский

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