Singlet oxygen in environmental catalysis: Mechanisms, applications and future directions

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 529, P. 216439 - 216439

Published: Jan. 16, 2025

Language: Английский

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Improvement Catalytic Efficiency of the Fenton-Like Reaction via the Interaction among Fe Species Encapsulated in N-Doped Carbon Materials

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

The Fenton-like reaction has been widely used for environmental modification. However, improvement of the catalytic efficiency is still a challenge. In this study, series core-shell-shaped catalysts (FeNC-x, x presents calcination temperature) was fabricated through pyrolysis Fe-based metal-organic frameworks (Fe-MOF). Fe species were encapsulated by N-doped carbon materials and changed from Fe3O4 to Fe3C, α-Fe, Fe-N4 with temperature increasing 500 800 °C. Simultaneously, electron density atom obviously increased. FeNC-650 exhibited high efficiency, as more than 85.6% TC (40 mg/L) instantaneous removal H2O2-based reaction. turnover number about 70 64 times higher that Fe-MOF FeNC-500. synergistic interaction among induced distribution around excellent performances. Moreover, interference resistance toward different anions humic acid. toxicity intermediate products decreased during degradation. This research may give strategy synthesis in wastewater purification.

Language: Английский

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Coherent Single‐Atom Dipole–Dipole Coupling Mediates Holistic Regulation of K⁺ Migration for Superior Energy Storage and Dendrite‐Free Metal Deposition

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

Published: March 5, 2025

Abstract Potassium‐based batteries, including potassium‐ion (PIBs) and potassium metal batteries (PMBs), are gaining attention as alternatives to lithium‐ion (LIBs). However, potassium's large ionic radius (1.38 Å) reduces charge density, weakens solvation, increases energy barriers for K + diffusion, leading slower reaction kinetics, thicker solid electrolyte interphase (SEI) layers, dendrite formation. To address these challenges, a novel single‐atom Fe‐N 4 dipole–dipole coupling (SA.Fe) is proposed. The unique coordination highly conductive Ketjen black (KB) substrate establish rapid horizontal electron transfer network, enhancing electrode interface reactions. Moreover, Fe‐N‐C generates short‐range polar electric field, improving affinity diffusion. This coherent effectively regulates migration, significantly kinetics lowering diffusion barriers. SA.Fe anode delivers high reversible capacities (446.3 mAh g −1 ) exceptional durability (10 000 cycles at 2.0 A in PIBs, alongside remarkable stability (600 0.5 mA cm −2 fast (K metal) deposition without formation PMBs. study highlights the potential of dipole efficient storage dendrite‐free offering promising pathway next‐generation potassium‐based systems.

Language: Английский

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Critical review on the abatement of endocrine disrupting chemicals using synthesized iron-based materials in persulfate systems: Reactive species, reaction mechanisms, and perspectives

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161675 - 161675

Published: March 1, 2025

Language: Английский

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Post-vulcanization combined with magnetic modification of sulfonated biochar as heterogeneous fenton catalyst for tetracycline degradation

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 69, P. 106557 - 106557

Published: Nov. 30, 2024

Language: Английский

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Ultra-fast catalytic oxidation of persulfate by waste fiber carbon with lattice distortion

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 352, P. 128245 - 128245

Published: June 1, 2024

Language: Английский

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Hierarchical Anion Exchange and Reverse Electron Transfer in Layered Double Hydroxides/Peroxymonosulfate System for Roxarsone Elimination

Langmuir, Journal Year: 2024, Volume and Issue: 40(35), P. 18683 - 18694

Published: Aug. 20, 2024

Roxarsone (ROX) is the main form of arsenic pollution in world, and developing effective methods for its elimination beneficial to human health ecological environment. Herein, we report glutaraldehyde cross-linked chitosan-encapsulated CoCe-LDH (layered double hydroxides) as an outstanding catalyst advanced oxidation ROX efficient adsorption inorganic arsenic. 100% more than 98.5% As(III)/As(V) were eliminated, over 99.3% remaining was oxidized low-toxicity As(V) peroxymonosulfate (PMS) activation system, some specific properties LDH are considered reasons. The hierarchical anion exchange has been confirmed be constructing a high-concentration PMS interlayer microenvironment. unique reverse electron transfer process induced selective production singlet oxygen. This work not only develops removal method but also provides new understanding LDH-based process.

Language: Английский

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Advancements on Single-Atom Catalysts-Mediated Persulfate Activation: Generating Reactive Species for Contaminants Elimination in Water

Molecules, Journal Year: 2024, Volume and Issue: 29(23), P. 5696 - 5696

Published: Dec. 2, 2024

The single-atom catalyst (SAC) activated persulfate process has emerged as a highly efficient technology for eliminating refractory organic compounds in aqueous environments. This review delves into the intricacies of utilizing SACs effective removal various contaminants water. common supports and preparation procedures are summarized at first. synthesis methods (i.e., wet chemical method, one-pot hydrothermal high-temperature pyrolysis method) also described. Then, comprehensive overview diverse reaction mechanisms SAC-activated systems is presented, including radical oxidation via sulfate or hydroxyl radicals superoxide radicals, nonradical single oxygen, surface active complex, high-valent metal-oxo species oxidation. impact key factors such peroxides concentration, SAC dosage, pH, inorganic anions, matter, operando stability, real water delved. pollutants azo dyes, phenolic compounds, pharmaceuticals, bacteria) by this further summarized. Finally, challenges perspectives field treatment discussed.

Language: Английский

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Hierarchical Anion Exchange and Reverse Electron Transfer in Ldh/Peroxymonosulfate System for Roxarsone Elimination

Published: Jan. 1, 2024

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Language: Английский

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