Covalent organic frameworks: an ideal platform for designing ordered materials and advanced applications

Chemical Society Reviews, Год журнала: 2020, Номер 50(1), С. 120 - 242

Опубликована: Дек. 7, 2020

Covalent organic frameworks offer a molecular platform for integrating units into periodically ordered yet extended 2D and 3D polymers to create topologically well-defined polygonal lattices built-in discrete micropores and/or mesopores.

Язык: Английский

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Synthesis of porous poly(ionic liquid)s for chemical CO₂fixation with epoxides

Green Chemistry, Год журнала: 2022, Номер 24(9), С. 3433 - 3460

Опубликована: Янв. 1, 2022

Porous poly(ionic liquid)s, combining the features of porous polymers and ionic moieties resembling structures functions liquids, have exhibited promising potential in CO 2 fixation via cycloadditions with epoxides.

Язык: Английский

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Current status of CO2 capture with ionic liquids: Development and progress

Fuel, Год журнала: 2023, Номер 344, С. 128102 - 128102

Опубликована: Март 15, 2023

Global warming triggered by greenhouse gas (GHG) emissions, particularly carbon dioxide (CO2), significantly influences climate change and has become a common environmental issue recently. The current amine-based technologies (ABTs) for CO2 capture (CAPCO2) have high energy demand, low absorption, desorption rates, are less environmentally sustainable due to emissions of volatile solvents. Therefore, the development friendly CAPCO2 materials and/or processes is growing area research. utilization ionic liquids (ILs) recently attracted attention. unique characteristics ILs, such as their vapor pressure affinity well volatility make them viable substitute existing processes. This work provides comprehensive overview accomplishments challenges during use ILs CAPCO2. Review also outlines mechanisms with at molecular level, properties characterization CO2/IL systems, effect operating conditions on uptake (UPCO2) capacity ILs. It emphasizes impact cations, anions, functional groups solubility ((SCO2)) in biodegradability toxicity Additionally, recent advances IL membrane technology considered. Lastly, contribution simulations create assess was reviewed. Protic aprotic shown outstanding efficiency UPCO2. interactions between anionic part enhance UPCO2 outperform traditional organic Functionalized (FUNILs) tuned groups, supported membranes (SILMs) reversible (RILs) improved promising capturing process from industrial streams even under partial pressure. relative importance chemical breakdown constituents (cation–anion interfacial structuring) different temperatures unclear, more research this required better inform design new review proper/systematic guideline help manufacturers engineers high-capacity appropriate

Язык: Английский

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Amino-Functionalized Ionic-Liquid-Grafted Covalent Organic Frameworks for High-Efficiency CO₂Capture and Conversion

ACS Applied Materials & Interfaces, Год журнала: 2022, Номер 14(50), С. 55674 - 55685

Опубликована: Дек. 10, 2022

Rationally integrating desired functional components into a composite material can endow the tailored function to achieve corresponding purpose. This is first case where series of [AeImBr]X%-TAPT-COFs (X = 0, 17, 33, 50, 67, 83, 100) were fabricated by chemically amino-functionalized imidazole ionic liquid (NH2-IL) onto channel walls mesoporous covalent organic framework materials ([HO]X%-TAPT-COFs). By virtue polar groups (amino groups) and abundant cations NH2-IL its microporous nature, obtained exhibit higher CO2 capture activity than [HO]X%-TAPT-COFs. Correspondingly, equilibrium capacity increases from 62.6 117.4 mg/g, which crucial storage enough around catalytic active sites. Additionally, synergistic effect -NH2 Br- in also improve cycloaddition reaction rate. The characteristics contribute efficient generation cyclic carbonate through heterogeneously catalyzing CO2-epoxide without any solvents cocatalysts. Specifically, [AeImBr]83%-TAPT-COF has mg/g cyclochloroallyl yield 99.1%. As result use chemical grafting method, possess excellent stability cycle life. reach 112.7 mg CO2/g adsorbent 95.0% at eighth cycle.

Язык: Английский

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Immobilization of U(VI) onto covalent organic frameworks with the different periodic structure by photocatalytic reduction

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 326, С. 122398 - 122398

Опубликована: Янв. 11, 2023

Язык: Английский

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Stable Dicationic Covalent Organic Frameworks Manifesting Notable Structure-Enhanced CO₂ Capture and Conversion

ACS Catalysis, Год журнала: 2023, Номер 13(19), С. 13021 - 13033

Опубликована: Сен. 21, 2023

Covalent organic frameworks (COFs) are a class of promising porous crystalline materials for both capturing and converting CO2 into high-value-added products. However, long synthesis time the need cocatalyst restrict its potential conversion. Herein, bipyridine-based TAPT-BP-COF with high crystallinity as skeleton is rapidly synthesized within only 1 h by aid supercritical (scCO2) activation. Then, production dicationic TAPT-BP2+-COF accomplished quaternization reaction. The capture capacity improved 55.6% due to CO2-philic groups (imine triazine groups), polar (−OH), charged skeleton, suitable pore size, thus ensuring sufficient around catalytic active sites. Additionally, outstanding structure-enhanced conversion performance observed presence synergistic effect between –OH Br– in skeleton. rate-determining step cycloaddition significantly accelerated without any solvents cocatalysts compared individual [OH-BP]2+[Br]2– (BP2+ moiety). Specifically, efficiently generates cyclic carbonate heterogeneously catalyzing CO2-epoxide yield 99.3% has excellent stability that can be reused ten times significant activity reduction. This work provides novel perspective targeted design rapid COF-based catalysts efficiency durability

Язык: Английский

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Covalent Organic Frameworks (COFs) for CO2 Utilizations

Carbon Capture Science & Technology, Год журнала: 2025, Номер unknown, С. 100365 - 100365

Опубликована: Янв. 1, 2025

Язык: Английский

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Imidazolium-based ionic porous hybrid polymers with POSS-derived silanols for efficient heterogeneous catalytic CO2 conversion under mild conditions

Chemical Engineering Journal, Год журнала: 2019, Номер 381, С. 122765 - 122765

Опубликована: Сен. 7, 2019

Язык: Английский

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Imidazolium‐Functionalized Ionic Hypercrosslinked Porous Polymers for Efficient Synthesis of Cyclic Carbonates from Simulated Flue Gas

ChemSusChem, Год журнала: 2019, Номер 13(2), С. 341 - 350

Опубликована: Ноя. 11, 2019

The rapid growth of CO2 emissions, especially from power plants, has led to the urgent need directly capture and fix in flue gas after simple purification rather than energy-intensive separation. Herein, imidazolium-functionalized ionic hypercrosslinked porous polymers (HCPs) bearing adjustable surface groups were straightforwardly synthesized through co-hypercrosslinking benzylimidazole salts crosslinker Friedel-Crafts alkylation. Abundant microporosity relatively high moieties obtainable ethyl-group-tethered HCP, giving a remarkably selective performance with uptake 3.05 mmol g-1 an ideal adsorbed solution theory (IAST) /N2 selectivity as 363 (273 K, 1 bar). This polymer demonstrated efficiency synthesis cyclic carbonates coupling various epoxides simulated (15 % 85 N2 ), yields, large turnover numbers (up 4800), stable reusability under additive- solvent-free conditions.

Язык: Английский

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Efficient CO2 enrichment and fixation by engineering micropores of multifunctional hypercrosslinked ionic polymers

Chemical Engineering Journal, Год журнала: 2020, Номер 390, С. 124652 - 124652

Опубликована: Март 9, 2020

Язык: Английский

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