Porous organic framework materials for photocatalytic H2O2 production

Journal of Material Science and Technology, Journal Year: 2024, Volume and Issue: 200, P. 185 - 214

Published: April 1, 2024

Language: Английский

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Vitrification-enabled enhancement of proton conductivity in hydrogen-bonded organic frameworks

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: May 10, 2024

Abstract Hydrogen-bonded organic frameworks (HOFs) are versatile materials with potential applications in proton conduction. Traditional approaches involve incorporating humidity control to address grain boundary challenges for This study finds vitrification as an alternative strategy eliminate effect HOFs by rapidly melt quenching the kinetically stable HOF-SXU-8 glassy state HOF-g . Notably, a remarkable enhancement conductivity without was achieved after vitrification, from 1.31 × 10 −7 S cm −1 5.62× −2 at 100 °C. Long term stability test showed negligible performance degradation, and even 30 °C, remained high level of 1.2 Molecule dynamics (MD) simulations X-ray total scattering experiments reveal system is consisted three kinds clusters, i.e., 1,5-Naphthalenedisulfonic acid (1,5-NSA) anion N,N-dimethylformamide (DMF) molecule H + -H 2 O clusters. In which, plays important role bridge these clusters mainly related on 3 These findings provide valuable insights optimizing HOFs, enabling efficient conduction, advancing energy conversion storage devices.

Language: Английский

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Comparison of Hydrogen Bonded Organic Framework with Reduced Graphene Oxide-Pd Based Nanocatalyst: Which One Is More Efficient for Entrapment of Nitrophenol Pollutants?

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

In this study, a Pd nanoparticles@hydrogen-bonded organic framework (Pd NPs@HOF) thin film was fabricated at the toluene-water interface. The HOF formed through interaction of trimesic acid (TMA) and melamine (Mel) in water phase, while Pd(0) produced from reduction [PdCl2(cod)] phase. as-synthesized NPs@HOF demonstrated to be an effective catalyst for selective p-nitrophenol o-nitrophenol p-aminophenol o-aminophenol. porous network introduced strong active sites between Mel, TMA, Pd(0). Kinetic studies showed that exhibited enhanced rate comparison with Pd@reduced-graphene oxide (r-GO) rates were 1.7 times faster 1.5 or even 10 than some Pd-based catalysts, maximum conversion 97.1% which attributed higher porosity greater surface-to-volume ratio material. Furthermore, π-π stacking interactions enhance catalytic activity by increasing sites, stabilizing NPs trapping nitrophenols, facilitating electron transfer, providing synergistic effect. Also, contributions hydrogen bonding, van der Waals forces, electrostatic interactions, π-σ noncovalent are reasons better performance Pd/r-GO reduced functional groups.

Language: Английский

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Advanced Porous Aromatic Frameworks: A Comprehensive Overview of Emerging Functional Strategies and Potential Applications

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 18, 2025

Porous aromatic frameworks (PAFs) are a fundamental group of porous materials characterized by their distinct structural features and large surface areas. These synthesized from building units linked strong carbon–carbon bonds, which confer exceptional rigidity long-term stability. PAFs functionalities may arise directly the intrinsic chemistry or through postmodification motifs using well-defined chemical processes. Compared to other traditional such as zeolites metallic-organic frameworks, demonstrate superior stability under severe treatments due robust bonding. Even in challenging environments, ease functionalization flexibility specificity. Research on has significantly expanded accelerated over past decade, necessitating comprehensive overview key advancements this field. This review provides an in-depth analysis recent advances synthesis, functionalization, dimensionality PAFs, along with distinctive properties wide-ranging applications. explores innovative methodologies strategies for functionalizing structures, manipulation tailor specific potential Similarly, application areas, including batteries, absorption, sensors, CO2 capture, photo-/electrocatalytic usages, supercapacitors, separation, biomedical discussed detail, highlighting versatility addressing modern scientific industrial challenges.

Language: Английский

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Self-Healing Hydrogen-Bonded Organic Frameworks for Low-Concentration Ammonia Capture

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 146(1), P. 627 - 634

Published: Dec. 22, 2023

The self-healing behavior has been extensively used in intelligent sensing systems capable of molecular recognition. However, most rigid crystalline frameworks, once collapsed under external stimuli like pressure, heat, or vacuum, could hardly recover to their phases ambient conditions. Here, we report the a new microporous hydrogen-bonded organic framework, FDU-HOF-3 (FDU = Fudan University), for ammonia (NH

Language: Английский

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Solution‐Processed Hydrogen‐Bonded Organic Framework Nanofilms for High‐Performance Resistive Memory Devices

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(47)

Published: Aug. 4, 2023

The integration of hydrogen-bonded organic frameworks (HOFs) into electronic devices holds great promise due to their high crystallinity, intrinsic porosity, and easy regeneration. However, despite potential, the utilization HOFs in remains largely unexplored, primarily challenges associated with fabricating high-quality films. Herein, a controlled synthesis HOF nanofilms smooth surface, good orientation is achieved using solution-processed approach. memristors exhibit outstanding bipolar switching performance low set voltage 0.86 V, excellent retention 1.64 × 104 s, operational endurance 60 cycles. Additionally, these robust display remarkable thermal stability, maintaining even at elevated temperatures up 200 °C. More strikingly, scratched films can be readily regenerated through simple solvent rinsing process, enabling reuse for fabrication new memristors, which difficult achieve traditional resistive materials. mechanism based on reversible formation annihilation conductive filaments revealed. This work provides novel invaluable insights that have significant impact advancing widespread adoption as active layers devices.

Language: Английский

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Hydrogen-bonded organic frameworks (HOFs): Multifunctional material on analytical monitoring

TrAC Trends in Analytical Chemistry, Journal Year: 2023, Volume and Issue: 170, P. 117436 - 117436

Published: Nov. 17, 2023

Language: Английский

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Bioinspired Luminescent HOF‐Based Foam as Ultrafast and Ultrasensitive Pressure and Acoustic Bimodal Sensor for Human–Machine Interactive Object and Information Recognition

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(38)

Published: June 16, 2023

Bionic sensors have extensively served smart robots, medical equipment, and flexible wearable devices. The luminescent pressure-acoustic bimodal sensor can be treated as a remarkable, multifunctional, integrated bionic device. Here, blue-emitting hydrogen-bonded organic framework (HOF-TTA) luminogen combines with melamine foam (MF), generating the elastic HOF-TTA@MF (1 2) pressure-auditory sensor. In pressure sensing process, 1 has excellent maximum sensitivity (132.02 kPa-1 ), low minimum detection limit (0.0 1333 Pa), fast response time (20 ms), high precision great recyclability. 2 auditory exhibits highest to 520 Hz sound at 255-1453 Hz. process of Hz, possesses 648 441.3 cps Pa-1 cm-2 (0.36 dB) ultrafast (10 ms) within 11.47-91.77 dB. mechanisms toward are analyzed in detail by finite element simulation. Furthermore, 2, human-machine interactive sensor, recognize nine different objects word information "Health", "Phone", "TongJi" accuracy strong robustness. This work provides facile fabricated method HOF-based endows them new recognition functions dimensions.

Language: Английский

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A Microporous Hydrogen‐Bonded Organic Framework Based on Hydrogen‐Bonding Tetramers for Efficient Xe/Kr Separation

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(52)

Published: Nov. 14, 2023

Hydrogen-bonded organic frameworks (HOFs) have been emerging as a new type of very promising microporous materials for gas separation and purification, but few HOFs structures constructed through hydrogen-bonding tetramers explored in this field. Herein, we report the first HOF (termed HOF-FJU-46) afforded by with 4-fold interpenetrated diamond networks, which shows excellent chemical thermal stability. What's more, activated HOF-FJU-46 exhibits highest xenon (Xe) uptake 2.51 mmol g-1 xenon/krypton (Kr) selectivity 19.9 at ambient condition among reported up to date. Dynamic breakthrough tests confirmed Xe/Kr HOF-FJU-46a, showing high Kr productivity (110 mL ) Xe (1.29 ), well good recyclability. The single crystal X-ray diffraction molecular simulations revealed that abundant accessible aromatic pyrazole rings pore channels HOF-FJU-46a can provide multiple strong C-H⋅⋅⋅Xe interactions atoms.

Language: Английский

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Robust Zn(II)-Organic Framework for High Catalytic Activity on Cycloaddition of CO₂ with Epoxides and Reversible Iodine Uptake

Crystal Growth & Design, Journal Year: 2023, Volume and Issue: 23(7), P. 4953 - 4960

Published: June 2, 2023

Increasingly serious natural disasters caused by excessive CO2 emission have given birth to a series of carbon-neutral technologies, among which the chemical transformation catalyzed metal–organic framework (MOF)-based catalysts has become focus. Herein, self-assembly zinc(II) cation and designed flexible multifunctional ligand 1,3-di(5,6-dicarboxylbenzimidazol-1-ylmethyl)benzene (H4DDBB) generated highly robust microporous material {[Zn(H2DDBB)]·2NMP}n (NUC-69) with 1D rectangle open channels (10.0 × 7.6 Å2). Because inner wall voids is densely functionalized free −COOH groups, Nimidazole atoms, tetra-coordinated metal sites, activated NUC-69a exhibits high catalytic performance on cycloaddition reactions epoxides under mild conditions turnover number frequency. In addition, can be used as an efficient iodine adsorbent maximum adsorption capacity 0.94 g/g (4.26 I2 molecules per formulation unit) 1.28 (5.81 in hexane solution volatilization phase. Hence, this work provides productive insight into design MOFs enhancing types active makes developed materials broader application prospect.

Language: Английский

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