Preparation of high temperature proton exchange membranes with multilayered structures through alternate deposition of carbon dots@Metal organic framework and Sulfonated Poly(Ether Ketone)

Journal of Membrane Science, Journal Year: 2024, Volume and Issue: 713, P. 123306 - 123306

Published: Sept. 7, 2024

Language: Английский

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Pore size effects on high-efficiency proton conduction in three stable 3D Al-based MOFs modified with imidazole

Inorganic Chemistry Frontiers, Journal Year: 2023, Volume and Issue: 10(24), P. 7359 - 7368

Published: Jan. 1, 2023

Three stable porous aluminum-based MOFs 1–3 with different pore sizes were selected as an imidazole (Im) supporter and three proton conductive composites Im@1–3 prepared. Due to the size effect, σ value of Im@3 can be up 2.55 × 10 −1 S cm at 80 °C 100% RH.

Language: Английский

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Two-in-one: Proton-conductive and luminescence properties of one strontium(II)-organic framework bearing imidazole dicarboxylate

Journal of Solid State Chemistry, Journal Year: 2024, Volume and Issue: 332, P. 124557 - 124557

Published: Jan. 13, 2024

Language: Английский

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Ionic liquid-functionalized metal organic frameworks and their composite membranes for enhanced proton transport

CrystEngComm, Journal Year: 2024, Volume and Issue: 26(19), P. 2450 - 2458

Published: Jan. 1, 2024

Post-synthetic modification with ionic liquids is gaining prominence as a highly effective strategy for enhancing proton conductivity in metal–organic frameworks without significant structural changes.

Language: Английский

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Substantially Enhanced Performance of Proton Exchange Membranes by Metal–Imidazole Coordination within Metal–Organic Framework

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

Metal–organic frameworks (MOFs) are often used as proton conductor fillers to enhance the conductivity of hybrid membranes. It is interesting but still challenging discuss influence molecular morphology and distribution carriers within MOFs on their exchange membranes (PEMs) overall performance. In this work, two types imidazole-loaded conductors were synthesized based MIL-101(Cr), with one containing free imidazole molecules other coordinating Cr-metal sites. Furthermore, series composite (CPM/IM-x CPM@IM-x, x = 1, 2, 3) fabricated using filler a cross-linked poly(vinyl alcohol) (CL-PVA) that contains both hydrophilic hydrophobic structures matrix. The CPM/IM coordinated exhibit significantly enhanced water affinity, stability, ion capacity. This mainly due improving two-phase dispersion, promoting deprotonation, facilitating low-energy-barrier transport, while CPM@IM relatively lower higher activation energy (Ea). Surprisingly, CPM/IM-2 membrane can reach up 2.7 × 10–2 S cm–1 at 85 °C 90% RH, lowest Ea 20.9 kJ/mol. remarkable performance indicates more efficient H+ transportation. Moreover, single-cell power density 89.7 mW cm–2, proving it exhibits high potential application prospects for hydrogen-based fuel cells.

Language: Английский

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Ionic Liquid-Functionalized Defective MOFs for Membrane-Based CO₂ Separation: A Dual Optimization Approach for Interface and Transport

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Defective MOFs have been identified as promising candidates for efficient membrane-based separation applications. However, the utilization of defective in membrane gas is still its infancy due primarily to inefficient molecular differentiation induced by structural defects. Herein, we report a strategic combination ionic liquid (IL) and UiO-66-NH2 MOF ameliorate CO2/N2 selectivity within highly permeable PIM-1 polymer. Characterizations analysis shown that postmodification with IL greatly improved dispersion compatibility PIM-1. Meanwhile, CO2-philic nature facilitated increased adsorption CO2 molecules, enabling them pass rapidly through transport channels MOF. As result, optimal membranes demonstrated concurrent enhancement both permeability ideal selectivity, which were 197.1% 24.9% greater than those PIM-1, respectively. Additionally, complex Lewis acid/base hydrogen bonding interactions among IL/defective MOF/PIM-1 ensured resulting possess long-term operational durability significant antiaging behavior. This deliberate matching between has well circumvented potential limitation carbon capture, applications other areas.

Language: Английский

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Multi-hydrophilic groups synergistic assembly ionic HOFs with multiple-water clusters and superprotonic single-crystal conductivity

Chemical Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

In this paper, iHOF-43 and iHOF-44, which contain multiple water clusters, were prepared by introducing ligands that three hydrophilic functional groups. The proton conductivity ( a -axis) of at 90 °C 98% RH was 1.66 × 10 −1 S cm .

Language: Английский

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Polyoxometalate-Based Ionic-Liquid-Functionalized Sulfonated Poly(ether ether ketone) Composite Membranes with High Proton Conductivity over a Wide Operating Temperature Range

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 14, 2025

Language: Английский

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Leveraging C₂H₄N₃⁺CH₃SO₃^– Ionic Liquid-Embedded MOF-808 and Biobased Vitamin E for Enhanced Performance and Oxidative Tolerance in Zero-Humidified PEMFCs

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 24, 2025

Language: Английский

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Flexible zwitterionic arm post-modificated UiO-66 for high and ultra-fast proton conduction

Inorganic Chemistry Communications, Journal Year: 2025, Volume and Issue: unknown, P. 114608 - 114608

Published: April 1, 2025

Language: Английский

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