Synthesis of covalent organic framework with amino affinity groups for enhanced selective adsorption of diclofenac sodium from aqueous solution

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 346, P. 127467 - 127467

Published: April 11, 2024

Language: Английский

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Optimized design of quaternary amino-functionalized chitosan fibers for ultra-high diclofenac adsorption from wastewater

Chemosphere, Journal Year: 2024, Volume and Issue: 357, P. 141970 - 141970

Published: April 10, 2024

Language: Английский

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Rapid construction of double macrocycles, hierarchical covalent organic framework with size-sieving and host-guest recognition for selective adsorption and targeted analysis of mycotoxins in cereals

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 493, P. 152464 - 152464

Published: May 21, 2024

Language: Английский

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A Key to Crystallinity and Reusability of Covalent Organic Frameworks: Adsorption-Induced Deformation

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(4), P. 1474 - 1483

Published: March 15, 2024

The design and synthesis of covalent organic frameworks (COFs) with excellent reusability are promising ways to advance practical applications in many fields, including as absorbents for environmental remediation. However, a lack guiding principles makes it challenging. Herein, two COFs (DhaTAT DhaTAB) prepared demonstrated work excellently the adsorption removal representative pollutant phenanthrene (PHE) highest capacity fastest kinetics reported so far. Although having comparable PHE performances, DhaTAT displays much better than DhaTAB. By deeply exploring underlying mechanism, we reveal first time adverse effects adsorption-induced deformation phenomenon on crystallinity, morphology, specific surface area, thus COFs, propose that introducing electron-withdrawing groups can alleviate this endow COF-based adsorbents reusability. Such prediction is further confirmed by recycling performances new (DapTFB DanTFB) designed under guidance theoretical calculations. This study provides valuable insights into application potential which crucial development materials stable performance good

Language: Английский

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Regulating the Positive Localized Electric Field in Mixed Matrix Membranes by Charge Reversal of ILs‐COF for Boosting CO₂ Separation

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

Published: Dec. 18, 2024

Abstract Covalent organic frameworks (COFs), characterized by their high porosity and stability, hold great potential for applications in gas separations. However, achieving precise size sieving without hindering the diffusion rate is challenging. This study presents a novel approach to establishing tunable localized electric fields COF channels achieve efficient CO 2 separation Pebax‐based mixed matrix membranes (MMMs). Different charge densities of field are achieved host–guest interaction between varying charged ionic liquids (ILs). Remarkably, MMM with positive attains optimal /CH 4 performance significantly enhanced permeability (≈38%) selectivity (≈99%), surpassing Robeson upper bound. Through density functional theory (DFT) calculations, due “sieving effect” on over CH . Specifically, negatively O atom exhibits stronger electrostatic than positively H Therefore, strategy regulating can be employed as an design MMMs.

Language: Английский

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Substituted triazine-based covalent organic frameworks aerogels for the efficient adsorption and catalytic degradation of tetracycline hydrochloride

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 686, P. 978 - 989

Published: Feb. 7, 2025

Language: Английский

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Enhanced removal of per- and poly-fluoroalkyl substances with porous aminated covalent organic polymer in water

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: 13(2), P. 115721 - 115721

Published: Feb. 7, 2025

Language: Английский

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Construction of Guanidinium-Functionalized Covalent Organic Frameworks via Phototriggered Click Reaction as a Dual-Mode Accurate Sensor for Malondialdehyde

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

Published: Feb. 11, 2025

Malondialdehyde (MDA) serves as a pivotal indicator to estimate the lipid peroxidation status and biomarker for assessment of oxidative stress screening disease by people excretion. However, most existing analytical methods MDA suffer from complicated derivation, leading poor accuracy inconvenience. In this work, guanidinium-functionalized covalent organic framework (COF) was delicacy-designed used tune modular structure building blocks with condensation, phototriggered click reaction, further guanidylation process. A methoxy-group-containing linker in skeleton adopted form lone-pair delocalized oxygen atoms, trigger resonance effect, attenuate polarization C═N bond linkages, weaken interlayer repulsion, supporting stability guest gating COF. The available guanidino groups grew ordered pore walls COF served customized talon an enhanced interaction site density rapidly grab target charge-assisted strong hydrogen bonds electrostatic attraction forces. This distinctive feature significantly bolstered sensitive signal transduction, enabling rapid sensing (within 120 s) without derivation treatment, achieved calculated limit detection (LOD) low 0.08 μM. With accessible image-data transmission process, portable dual-channel platform accurate monitoring.

Language: Английский

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Assessment of Dynamic Removal Mechanism of Non-steroidal Anti-inflammatory Biomolecules in the Aqueous Environments by a novel Covalent Organic Framework

Journal of Molecular Graphics and Modelling, Journal Year: 2025, Volume and Issue: 137, P. 109006 - 109006

Published: March 5, 2025

Language: Английский

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Functionalized magnetic covalent organic frameworks with refining tunable cores for highly selective adsorption of immunosuppressive drugs

Analytical and Bioanalytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

Language: Английский

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