Uranium and lithium extraction from seawater: challenges and opportunities for a sustainable energy future

Journal of Materials Chemistry A, Год журнала: 2023, Номер 11(42), С. 22551 - 22589

Опубликована: Янв. 1, 2023

Our analysis of the current literature shows that advances in extractive technologies for U/Li recovery lie at intersection between molecular simulation, nanotechnology and materials science, electrochemistry, membrane engineering.

Язык: Английский

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Transformation of an Imine Cage to a Covalent Organic Framework Film at the Liquid–Liquid Interface

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(23)

Опубликована: Март 13, 2023

Dynamic covalent chemistry (DCC) opens up a fascinating route for the construction of well-organized supramolecular architectures, starting from organic molecular cages to crystalline macromolecular frameworks (COFs). Herein, first time, we have manifested facile room-temperature DCC-directed transformation discrete imine cage-to-COF film at liquid-liquid interface. The unfolding cage leading generation intermediates, followed by their interface-assisted preorganization and subsequent growth COF film, are elucidated through detailed spectroscopic microscopic investigations. interfacial provides faster fabrication free-standing films with high porosity crystallinity, demonstrating excellent performance towards sieving solvent permeance. Thus, current study new structural interconversion between two entities diverse dimensionality employing DCC confined

Язык: Английский

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Covalent Organic Frameworks for Photocatalytic Hydrogen Peroxide Generation

ACS Materials Letters, Год журнала: 2024, Номер 6(5), С. 2007 - 2049

Опубликована: Апрель 17, 2024

Hydrogen peroxide (H2O2), a valuable chemical, is widely used as powerful oxidizing agent in chemical synthesis, pharmaceuticals, medical disinfection, and environmental treatment industries. Currently, over 95% of H2O2 produced industrially using the anthraquinone process, which associated with its high energy consumption hazardous byproducts. Therefore, photochemical synthesis from water oxygen covalent organic framework based photocatalysts have attracted considerable attention. This review aims to outline recent achievements, challenges future prospects COFs heterogeneous for sustainable generation. We summarize chronological development COFs, different mechanisms involved, detailed experiments quantification methods photocatalytic The puts forward an outlook, highlighting advantages limitations anticipate that this will provide insight into current progress inspire next-generation production.

Язык: Английский

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Conjugated Microporous Polymers for Catalytic CO₂ Conversion

Advanced Science, Год журнала: 2024, Номер 11(14)

Опубликована: Фев. 7, 2024

Abstract Rising carbon dioxide (CO 2 ) levels in the atmosphere are recognized as a threat to atmospheric stability and life. Although this greenhouse gas is being produced on large scale, there solutions reduction indeed utilization of gas. Many these involve costly or unstable technologies, such air‐sensitive metal–organic frameworks (MOFs) for CO capture “non‐green” systems amine scrubbing. Conjugated microporous polymers (CMPs) represent simpler, cheaper, greener solution utilization. They often easy synthesize at scale (a one pot reaction many cases), chemically thermally stable (especially comparison with their MOF covalent organic framework (COF) counterparts, owing amorphous nature), and, result, cheap manufacture. Furthermore, surface areas, tunable porous chemical structures mean they reported highly efficient motifs. In addition, provide dual pathway utilize captured via conversion electrochemical into industrially valuable products. Recent studies show that all attractive properties can be realized metal‐free CMPs, presenting truly green option. The promising results two fields CMP applications reviewed explored here.

Язык: Английский

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Superlative Porous Organic Polymers for Photochemical and Electrochemical CO₂ Reduction Applications: From Synthesis to Functionality

Langmuir, Год журнала: 2024, Номер 40(20), С. 10414 - 10432

Опубликована: Май 10, 2024

To mimic the carbon cycle at a kinetically rapid pace, sustainable conversion of omnipresent CO

Язык: Английский

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Construction of hydroxyl-functionalized hyper-crosslinked networks from polyimide for highly efficient iodine adsorption

iScience, Год журнала: 2024, Номер 27(2), С. 108993 - 108993

Опубликована: Янв. 23, 2024

The rapid development of nuclear energy posed a great threat to the environment and human health. Herein, two hydroxyl-functionalized hyper-crosslinked polymers (PIHCP-1 PIHCP-2) containing different electron active sites have been synthesized via Friedel-Crafts alkylation reaction polyimides. resulting showed micro/mesoporous morphology good thermal chemical stability. Rely on high porosity multi-active sites, PIHCPs show an ultrahigh iodine uptake capacity reached 6.73 g g−1 removal efficiency from aqueous solution also reaches 99.7%. Kinetic analysis demonstrates that adsorption was happened heterogeneous surfaces in form multilayer chemisorption. Electrostatic potential (ESP) calculation proves contribution hydroxyl groups capture performance. In addition, both adsorbents can be maintained over 91% after four cyclic experiments which ensures their recyclability for further practical applications.

Язык: Английский

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Redox-Active Conjugated Microporous Polymers Featuring a Precise Pore Size for High-Performance Supercapacitor Energy Storage

ACS Applied Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 18, 2025

Язык: Английский

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Defects and Disorder in Covalent Organic Frameworks for Advanced Applications

Advanced Functional Materials, Год журнала: 2023, Номер 34(18)

Опубликована: Дек. 24, 2023

Abstract Crystalline porous organic polymers (CPPs) or covalent frameworks (COFs), are composed by light elements linked bonds. Despite the remarkable progress attained, there still bottlenecks limiting further development, some of them related to presence defects during their synthesis as well in‐depth understanding structure active centers and/or details reaction mechanism. Indeed, very often proposed structures far from reality because and disorders have not been considered. The present review provides an illustrative overview “defects disorder in COFs”. These include those only generated manipulation COFs, but also lack crystallinity, stacking network vacancies. starts giving general remarks on COFs synthetic methods, followed different methods play manage defects, how minimize take advantage gain new properties applications. Selected characterization techniques quantify defective sites presented. Finally, challenges future opportunities field summarized last section.

Язык: Английский

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Impact of the Crystallinity of Covalent Organic Frameworks on Photocatalytic Hydrogen Evolution

Crystal Growth & Design, Год журнала: 2023, Номер 23(6), С. 4701 - 4719

Опубликована: Май 22, 2023

The design and synthesis of crystalline porous materials is a frontier research area, especially in photo(electro)catalysis, due to their fascinating semiconducting properties. In recent years, metal–organic frameworks (MOFs) covalent organic (COFs) have received much attention heterogeneous catalysis, ranging from chemical conversion solar energy production. addition, COFs with well-ordered framework structures been extensively studied the field photocatalysis for water splitting produce hydrogen (H2) oxygen (O2). Due synergistic effect crystallinity, porosity, conjugation frameworks, widely explored. this Review, we aim discuss crystallinity on generation via photocatalytic splitting. We then briefly summarize basic mechanisms generation, advantages semiconductors over amorphous materials, strategic designs COFs. state-of-the-art developments as evolution systematically reviewed. believe that understanding structure–property relationship performance respect long-range structural order essential further development innovative COF-based real-time applications.

Язык: Английский

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Structural Modulation of Nitrogen-Rich Covalent Organic Frameworks for Iodine Capture

Langmuir, Год журнала: 2023, Номер 39(45), С. 16069 - 16078

Опубликована: Окт. 17, 2023

Developing efficient adsorbent materials for iodine scavenging is essential to mitigate the threat of radioactive causing adverse effects on human health and environment. In this context, we explored N-rich two-dimensional covalent organic frameworks (COFs) with diverse functionalities capture. The pyridyl-hydroxyl-functionalized triazine-based novel 5,5',5″-(1,3,5-triazine-2,4,6-triyl)tris(pyridine-2-amine) (TTPA)-COF possesses high crystallinity (crystalline domain size: 24.4 ± 0.6 nm) porosity (specific BET surface area: 1000 90 m2 g-1). TTPA-COF exhibits superior vapor-phase adsorption (4.43 0.01 g g-1) compared analogous COF devoid pyridinic moieties, 2,4,6-tris(4-aminophenyl)-1,3,5-triazine (TAPT)-COF. capture by due enhanced binding affinity conferred extra active sites. Furthermore, crucial role long-range order in porous adsorbents has been experimentally evidenced comparing performance vapor an amorphous network polymer having identical functionalities. We have also demonstrated ability from aqueous phases. mechanism heteroatom-rich framework elucidated through FTIR, XPS, Raman spectral analyses. present study highlights need structural tweaking building blocks toward rational construction advanced functional a task-specific application.

Язык: Английский

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