Understanding the Selective Removal of Perfluoroalkyl and Polyfluoroalkyl Substances via Fluorine–Fluorine Interactions: A Critical Review

Environmental Science & Technology, Год журнала: 2024, Номер unknown

Опубликована: Сен. 12, 2024

As regulatory standards for per- and polyfluoroalkyl substances (PFAS) become increasingly stringent, innovative water treatment technologies are urgently demanded effective PFAS removal. Reported sorbents often exhibit limited affinity frequently hindered by competitive background substances. Recently, fluorinated (abbreviated as fluorosorbents) have emerged a potent solution leveraging fluorine-fluorine (F···F) interactions to enhance selectivity efficiency in This review delves into the designs applications of fluorosorbents, emphasizing how F···F improve binding affinity. Specifically, existence results removal efficiencies orders magnitude higher than other counterpart sorbents, particularly under conditions. Furthermore, we provide detailed analysis fundamental principles underlying elucidate their synergistic effects with sorption forces, which contribute enhanced efficacy selectivity. Subsequently, examine various fluorosorbents synthesis fluorination techniques, underscore importance accurately characterizing through advanced analytical methods, emphasize significance this interaction developing selective sorbents. Finally, discuss challenges opportunities associated employing techniques guide design advocate further research development sustainable cost-effective interactions.

Язык: Английский

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Review on the polymer materials for capacitive deionization

Desalination, Год журнала: 2024, Номер 586, С. 117884 - 117884

Опубликована: Июнь 29, 2024

Язык: Английский

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Unraveling the Role of Solvation and Ion Valency on Redox-Mediated Electrosorption through In Situ Neutron Reflectometry and Ab Initio Molecular Dynamics

JACS Au, Год журнала: 2024, Номер 4(3), С. 919 - 929

Опубликована: Фев. 1, 2024

Solvation and ion valency effects on selectivity of metal oxyanions at redox–polymer interfaces are explored through in situ spatial-temporally resolved neutron reflectometry combined with large scale ab initio molecular dynamics. The ReO4– vs MoO42– for two redox-metallopolymers, poly(vinyl ferrocene) (PVFc) poly(3-ferrocenylpropyl methacrylamide) (PFPMAm) is evaluated. PVFc has a higher Re/Mo separation factor compared to PFPMAm 0.6 V Ag/AgCl. In techniques show that both swell the presence (having solvation PFPMAm), but do not contact MoO42–. Ab simulations suggest maintains well-defined double shell ReO4–. more loosely solvated anion (ReO4–) preferably adsorbed by hydrophobic redox polymer (PVFc), electrostatic cross-linking driven divalent anionic interactions could impair film swelling. Thus, in-depth understanding mechanisms can accelerate design ion-selective redox-mediated systems transition recovery recycling.

Язык: Английский

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Olefin-Assisted Electrochemical Recycling of Homogeneous Hydrosilylation Catalysts in Nonpolar Media

JACS Au, Год журнала: 2025, Номер 5(3), С. 1221 - 1231

Опубликована: Фев. 27, 2025

Homogeneous platinum catalysts for hydrosilylation are essential the chemical industry and society, through production of commodities such as functional silicones. However, high boiling points products low concentration homogeneous make implementation traditional separation methods difficult. Catalyst loss becomes a core sustainability techno-economic challenge. In addition, highly active platinum-based have remarkable susceptibility to deactivation upon reaction completion. Recently, redox-mediated electrosorption has been successfully demonstrated in number electrically conductive media platform. industrial systems carried out nonconductive media. Therefore, developing an electrochemical recycling system realistic, can be transformative sustainable catalysis manufacturing. Here, we overcome these challenges catalyst by introducing strongly coordinating vinyl ligand enabling Pt solvent-free, nonpolar reactant two distinct loops electrosorbent regeneration. The olefin maintains catalytic activity after prevents particle aggregation, primary mechanism deactivation. stabilized coordinated reversibly adsorbed released electrosorbent, demonstrating 100% retention over 90% release efficiency. A analysis supports economic potential system, with cost savings >5k USD/kgPt. By combining design engineering, demonstrate industrially relevant practical

Язык: Английский

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Metallo-Polyampholyte Hydrogel Based on a Y-Shaped Amphoteric Monomer with Robust Antibacterial and Antifouling Performance

Biomacromolecules, Год журнала: 2025, Номер unknown

Опубликована: Фев. 15, 2025

A Y-shaped metallo-amphoteric monomer with cobaltocenium as the cation and sulfonyl anion was synthesized used to prepare corresponding metallo-polyampholyte hydrogel (PAH). The in amphoteric system its Y-shape may introduce tunable supramolecular interactions, providing regulation of hydration properties biomedical performance. Such metallo-PAH showed a higher water swelling ratio comparable mechanical performance comparison organic counterpart, polysulfobetaine methacrylate (SBMA-PAH). Moreover, good inhibitory effect against Gram-negative bacteria, Gram-positive well drug-resistant bacteria. Interestingly, it found that achieved high 95% antifouling property different proteins both short-term (2 h) long-term (24 tests, which is much better than SBMA-PAH (<50%). It believed concept "metallo-polyampholyte" expand field classical polyampholytes related materials, thus opening up new avenue design powerful materials.

Язык: Английский

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Binder-free Bi@MXene film with 3D sandwich structure for highly hybrid capacitive deionization

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 132263 - 132263

Опубликована: Фев. 1, 2025

Язык: Английский

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Electrocatalytic nanocomposite flow-through porous electrodes with sputter-coated Cu/Co nanoparticles for degradation of waterborne perfluorooctanoic acid

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 132539 - 132539

Опубликована: Март 1, 2025

Язык: Английский

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Molecularly Selective Polymer Interfaces for Electrochemical Separations

Langmuir, Год журнала: 2023, Номер 39(47), С. 16685 - 16700

Опубликована: Ноя. 13, 2023

The molecular design of polymer interfaces has been key for advancing electrochemical separation processes. Precise control interactions at enabled the removal or recovery charged species with enhanced selectivity, capacity, and stability. In this Perspective, we provide an overview recent developments in applied to liquid-phase separations, a focus on their role as electrosorbents well membranes electrodialysis systems. particular, delve into both single-site macromolecular redox polymers use heterogeneous platforms. We highlight significance incorporating redox-active non-redox-active moieties tune binding toward ever more challenging including structurally similar even isomers. Furthermore, discuss advances development selective ion-exchange critical need physicochemical properties polymer. Finally, share perspectives challenges opportunities ranging from comprehensive understanding mechanisms continued innovation architectures electrodes.

Язык: Английский

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What can Blyholder teach us about PFAS degradation on metal surfaces?

Environmental Science Advances, Год журнала: 2024, Номер 3(3), С. 383 - 401

Опубликована: Янв. 1, 2024

The C–F bond in PFAS has been shown to have an anti-bonding orbital that can interact with metal surfaces, allowing for its degradation.

Язык: Английский

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Balance of Hydrophilicity and Hydrophobicity of Stimuli-Responsive Metallopolymer-Decorated Organic Particles

ACS Applied Polymer Materials, Год журнала: 2024, Номер 6(5), С. 2993 - 3002

Опубликована: Фев. 27, 2024

The controlled design of surfaces through functionalization enables a tailored material properties. Especially stimuli-responsive polymers are significant interest in preparing so-called "smart surfaces". living anionic polymerization offers the possibility modifying grafting-from or grafting-to strategy. This study applied both synthesis strategies to functionalize porous polystyrene-based microparticles with redox-responsive poly(vinyl ferrocene). character enabled preparation various chain lengths, and application grafting led particles different hydrophilicity. resulting were investigated characterized by infrared spectroscopy, size-exclusion chromatography, scanning electron microscopy, energy-dispersive X-ray thermogravimetric analyses. influence molecular polymer brush structure lengths hydrophilicity on electrochemical addressability functionalized polystyrene was demonstrated cyclic voltammetry measurements. results this revealed fundamental characteristics surface-immobilized ferrocene polymers, which for electrochemically responsive materials sensing (selective) separation applications.

Язык: Английский

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