Recent progress of radionuclides separation by porous materials

Science China Chemistry, Год журнала: 2024, Номер 67(11), С. 3515 - 3577

Опубликована: Сен. 26, 2024

Язык: Английский

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Porphyrin-Based Hyper-Cross-Linked Polymers as Adsorbents for Reversible Capture of Iodine

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(32), С. 12113 - 12125

Опубликована: Авг. 1, 2024

Designing a novel adsorbent with high selectivity and absorptive capacity to remove I2 remains challenging task. In this work, series of porphyrin-based hyper-cross-linked porous organic polymers (PHCPs) dual hydroxy-rich structure were synthesized by the Friedel–Crafts reaction. PHCPs exhibit excellent thermal stability. The incorporation abundant π-electrons heteroatoms (N/O) in framework leads substantial charge transfer interactions iodine, resulting adsorption (469 mg g–1) rapid adsorption. Moreover, dynamics for iodine both aqueous cyclohexane solutions follow pseudo-second-order kinetic model, isotherm model complies Freundlich model. Importantly, selectively capture I3– presence anionic competition effectively at different pH values. Additionally, volatile performance reached 623 wt %. This study highlights extensive application prospects removal from gas liquid phases.

Язык: Английский

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Design, synthesis, and iodine adsorption performances of indole-derived porous organic polymers

Polymer, Год журнала: 2025, Номер unknown, С. 128106 - 128106

Опубликована: Янв. 1, 2025

Язык: Английский

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Diketopyrrolopyrrole‐based Donor–Acceptor Covalent Organic Frameworks for Iodine Capture

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

The recovery of radioactive iodine from nuclear waste and contaminated water sources is a critical environmental concern, which poses significant technical challenges. Herein, the study has demonstrated that tuning electronic properties diketopyrrolopyrrole-based donor-acceptor covalent organic frameworks (COFs) enhances trapping, improves charge transport, strengthens interactions - establishing structure-property relationship. This achieved by synthesizing COFs with linker 3,6-bis(4-(1,3-dioxolan-2-yl)phenyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione (DKP) in combination either electron acceptor 4,4',4″-(1,3,5-triazine-2,4,6-triyl)trianiline (TTT-DKP) or donor N1,N1-bis(4-aminophenyl)benzene-1,4-diamine (TAPA-DKP) linkers. These COFs, abundant sorption sites, thermal chemical stability, optimized pore environments, efficiently bind vapor solution phases. TAPA-DKP COF, containing electron-donating moieties, showed high uptake 3.52 g/g, exceeding 2.81 g/g electron-deficient TTT-DKP phase, both following pseudo-second-order kinetics. Density functional theory (DFT) calculations reveal adsorption sites showing COF binds I2 more effectively via its electron-rich highlighting role property modulation adsorption.

Язык: Английский

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Biomass betulin-based porous aromatic frameworks nanomicrospheres as adsorbents for reversible capture of iodine

Separation and Purification Technology, Год журнала: 2024, Номер 353, С. 128506 - 128506

Опубликована: Июнь 19, 2024

Язык: Английский

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Fabrication of Phosphorus- and Nitrogen-Rich Inorganic–Organic Hybrid Hyper-Cross-Linked Polymers for CO₂ and I₂ Uptake

ACS Applied Polymer Materials, Год журнала: 2024, Номер 6(11), С. 6843 - 6851

Опубликована: Июнь 5, 2024

In this research, two types of metal-free organic–inorganic phosphazene based hybrid porous polymers (HPMs) enriched with phosphorus (P) and nitrogen (N) for gas sorption characteristics were reported. Cyclic phosphazenes synthesized by condensation biphenyl methanol the hexachlorocyclophosphazenes (HCCPs) followed cross-linking fabrication high surface area moiety designated as HCP-1. Whereas HCP-2 was replacement polydichlorophosphazene (PDCP) chlorines later cross-linked in same manner. Brunauer–Emmett–Teller areas (SABETs) HCP-1 482 323 m2 g–1, respectively, whereas pore size distribution under 1.10 nm. The observation a higher is strongly indicative cyclic N P long chain backbone [-N═P-]. represented carbon dioxide (CO2) adsorption (1.656 mmol g–1 quantity adsorbed 37.13 cm3 at 273 K/1 bar 1.35 30.37 298 bar). low showed moderate capacity (1.6 35.82 1.26 28.36 values iodine uptake are 148 227 wt %, 353 K. These results indicate facile convenient method to synthesize heteroatom-rich CO2 I2 applications.

Язык: Английский

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Phenylhydrazine-based hyper-cross-linked polymers as adsorbents for reversible capture of iodine

Journal of Water Process Engineering, Год журнала: 2025, Номер 70, С. 106892 - 106892

Опубликована: Янв. 5, 2025

Язык: Английский

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One-Pot synthesis of amino acid-Based functional hyper-crosslinked ionic polymers as heterogeneous catalysts for efficient fixation of CO2 with epoxides

Separation and Purification Technology, Год журнала: 2024, Номер 354, С. 129036 - 129036

Опубликована: Июль 31, 2024

Язык: Английский

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Fabrication of New Hyper-cross-linked Polymer for Efficient Heavy Metal Adsorption from Industrial Wastewater

Arabian Journal for Science and Engineering, Год журнала: 2024, Номер unknown

Опубликована: Авг. 6, 2024

Язык: Английский

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The N,N,N′,N′-tetraphenylbenzidine-based conjugated hypercrosslinked polymers for adsorping iodine and fluorescence sensing 2,4-dinitrophenol, iodine

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, Год журнала: 2024, Номер 325, С. 125120 - 125120

Опубликована: Сен. 13, 2024

Язык: Английский

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