Chemical Engineering Science, Год журнала: 2025, Номер unknown, С. 121861 - 121861
Опубликована: Май 1, 2025
Materials Today Sustainability, Год журнала: 2024, Номер 25, С. 100672 - 100672
Опубликована: Янв. 13, 2024
Mixed-matrix membranes (MMMs) have emerged as a promising approach for developing new, stable, and highly effective gas liquid separation materials. MMMs combine porous crystalline framework materials, such Metal-organic frameworks (MOFs), covalent organic (COFs), hydrogen-bonded (HOFs), fillers incorporated in polymer matrix. This article comprehensively reviews MMM research, discussing the structure properties of MOFs, COFs, HOFs their attractiveness use MMMs. The also mixed matrix filtration with various water treatment applications. potential meeting needs different industries is demonstrated through discussion specific examples. Overall, this highlights significant technology next-generation materials attempts to cover most recent progress design deployment COFs HOFs-based MMMs, are remaining obstacles prospects. work enormous these applications raises attention toward economic aspect market diffusion
Язык: Английский
Процитировано
32
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(36)
Опубликована: Июнь 21, 2024
Abstract Hydrogen‐bonded organic frameworks (HOFs) are outstanding candidates for photocatalytic hydrogen evolution. However, most of reported HOFs suffer from poor stability and activity in the absence Pt cocatalyst. Herein, a series metal (Co 2 ‐HOF‐X, X=COOMe, Br, tBu OMe) have been rationally constructed based on dinuclear cobalt complexes, which exhibit exceptional presence strong acid (12 M HCl) base (5 NaOH) at least 10 days. More impressively, by varying ‐X groups microenvironment Co ‐HOF‐X can be modulated, giving rise to obviously different H production rates, following −X group sequence −COOMe>−Br>−tBu>−OMe. The optimized ‐HOF‐COOMe shows generation rate up 12.8 mmol g −1 h any additional noble‐metal photosensitizers cocatalysts, is superior Pt‐assisted systems. Experiments theoretical calculations reveal that grafted possess electron‐withdrawing ability, thus regulating electronic structures catalytic centres proton activation barrier production, leading distinctly activity.
Язык: Английский
Процитировано
20
Separation and Purification Technology, Год журнала: 2024, Номер 352, С. 127997 - 127997
Опубликована: Май 27, 2024
The capture of CO2 directly from the air is one most promising methods under investigation in recent years to reduce environmental concentration this pollutant order mitigate its effects on climate change. In work, activation olive pomace biochar with potassium hydroxide, KOH, has been studied for use as a adsorbent. effectiveness activated KOH at 750 °C an inert N2 atmosphere was evaluated, using different mass ratios biochar/KOH, 1:0.5, 1:1, and 1:2. Various characterisation analyses were performed determine chemical composition, specific surface area, pore size volume, structure, morphology, functional groups. adsorption isotherm determined atmospheric pressure temperature 10 °C. experimental equilibrium results fitted Langmuir, Freundlich, Temkin models. Additionally, kinetic behavior biochar/KOH adsorbent studied, dynamic experiments conducted data various models (pseudo-first order, pseudo-second Avrami, Elovich). Furthermore, transfer mechanism during process evaluated intra-particle diffusion model. Finally, regeneration investigated subsequent reuse For purpose, complete desorption captured easily carried out by modifying temperature.
Язык: Английский
Процитировано
19
Nano-Micro Letters, Год журнала: 2024, Номер 16(1)
Опубликована: Июнь 27, 2024
Abstract Ammonia (NH 3 ) is a carbon-free, hydrogen-rich chemical related to global food safety, clean energy, and environmental protection. As an essential technology for meeting the requirements raised by such issues, NH capture has been intensively explored researchers in both fundamental applied fields. The four typical methods used are (1) solvent absorption ionic liquids their derivatives, (2) adsorption porous solids, (3) ab-adsorption liquids, (4) membrane separation. Rooted development of advanced materials capture, we conducted coherent review design different materials, mainly past 5 years, interactions with molecules construction transport pathways, as well structure–property relationship, specific examples discussed. Finally, challenges current research future worthwhile directions proposed.
Язык: Английский
Процитировано
19
TrAC Trends in Analytical Chemistry, Год журнала: 2023, Номер 170, С. 117436 - 117436
Опубликована: Ноя. 17, 2023
Язык: Английский
Процитировано
37
Nano-Micro Letters, Год журнала: 2024, Номер 16(1)
Опубликована: Авг. 15, 2024
Metal-organic frameworks (MOFs) have been extensively considered as one of the most promising types porous and crystalline organic-inorganic materials, thanks to their large specific surface area, high porosity, tailorable structures compositions, diverse functionalities, well-controlled pore/size distribution. However, developed MOFs are in powder forms, which still some technical challenges, including abrasion, dustiness, low packing densities, clogging, mass/heat transfer limitation, environmental pollution, mechanical instability during process, that restrict applicability industrial applications. Therefore, recent years, attention has focused on techniques convert MOF powders into macroscopic materials like beads, membranes, monoliths, gel/sponges, nanofibers overcome these challenges.Three-dimensional (3D) printing technology achieved much interest because it can produce many high-resolution with complex shapes geometries from digital models. this review summarizes combination different 3D strategies MOF-based for fabricating 3D-printed monoliths applications, emphasizing water treatment gas adsorption/separation Herein, various fabrication such direct ink writing, seed-assisted in-situ growth, coordination replication solid precursors, matrix incorporation, selective laser sintering, light processing, described relevant examples. Finally, future directions challenges also presented better plan trajectories shaping improved control over structure, composition, textural properties monoliths.
Язык: Английский
Процитировано
16
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(12)
Опубликована: Фев. 1, 2024
Abstract Hydrogen‐bonded organic frameworks (HOFs) have shown promise in various fields; however, the construction of HOF/polymer hybrid membranes that can maintain both structural and functional integrity remains challenging. In this study, we here fabricated a new HOF ( HOF‐50 ) with reserved polymerizable allyl group via charge‐assisted H‐bonds between carboxylate anion amidinium, subsequently copolymerized monomers to construct covalently bonded (polyHOF) membrane. The resulting polyHOF membrane not only exhibits customizable mechanical properties extreme stability, but also shows an exceptional ratiometric luminescent temperature‐sensing function very high sensitivity visibility even when lanthanide content is two orders magnitude lower than reported mixed‐lanthanide metal–organic (MOFs) lanthanide‐doped covalent (COFs). This orthogonal postsynthesis copolymerization strategy may provide general approach for preparing connected diverse applications.
Язык: Английский
Процитировано
12
Journal of Membrane Science, Год журнала: 2024, Номер 702, С. 122795 - 122795
Опубликована: Апрель 16, 2024
Язык: Английский
Процитировано
12
Advanced Membranes, Год журнала: 2025, Номер unknown, С. 100127 - 100127
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
2
Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 131795 - 131795
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
2