Review on the polymer materials for capacitive deionization

Desalination, Journal Year: 2024, Volume and Issue: 586, P. 117884 - 117884

Published: June 29, 2024

Language: Английский

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

JACS Au, Journal Year: 2025, Volume and Issue: 5(3), P. 1221 - 1231

Published: Feb. 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

Language: Английский

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Investigating the Structure–Function Relationships of Fluorinated Interfaces for PFAS Capture and Electrochemically‐Mediated Release

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

Published: April 29, 2025

Abstract Fluorinated materials are promising sorbents for the selective removal of per‐ and polyfluoroalkyl substances (PFAS) due to their unique fluorophilic interactions. However, there gaps in understanding design principles toward fluorinated optimized PFAS remediation. In this work, we vary length side‐chains copolymer‐functionalized electrodes study effect on electrochemically‐mediated capture release. Molecular dynamics simulations adsorption experiments reveal that binding is governed by total amount interactions rather than side‐chain. Moreover, side‐chain alters polymer packing porosity, which turn affects Simulations short‐chain percolate into pores matrix, while long‐chain aggregate surface, facilitating a faster desorption. Experiments show desorption enhanced upon applying potential, regenerating over 80% electrode providing reversible mechanism release PFAS. Additionally, copolymer demosntrate selectivity between PFAS, achieving separation factors >190 perfluorooctanoic acid (PFOA, 7 C–F) perfluorobutanoic (PFBA, 3 C–F). This provides insights functional electrochemical separations.

Language: Английский

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Planar Chiral Metallopolymers for Electrochemically Mediated Enantioselective Separations

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

Published: May 13, 2025

The molecular design of redox-responsive interactions can unlock new pathways for enantioselective separations. While chiral redox molecules are powerful platforms recognition, their implementation in separations has remained elusive due to limitations enantioselectivity and a lack robust electrosorbents. Here, we polymer with planar chirality that achieve exceptional the separation biomolecules. Planar is generated through insertion substituent onto cyclopentadienyl ring an oxazoline-conjugated ferrocene stereochemical synthesis route guided by point at oxazoline moiety. These ferrocenes demonstrated significantly stronger than equivalent only chirality. Electronic structure calculations revealed key role chirality, where inserted functional groups either coordinatively or antagonistically contribute complexation, resulting enhanced interactions. metallopolymers were synthesized evaluated electrochemical adsorption N-Boc-proline, over 99% enantiomeric excess achievable within seven theoretical stages multistage cascade. combined electrochemistry offers promising path electrochemically mediated

Language: Английский

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Selective electrochemical recovery of cerium over lanthanum from complex waste feedstocks by alternating current electro-precipitation

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 504, P. 158537 - 158537

Published: Dec. 11, 2024

Language: Английский

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