نتایج جستجو برای: zeolitic imidazolate framework

تعداد نتایج: 462800  

Journal: :Coatings 2023

In recent years, the vapor deposition of zeolitic imidazolate framework-8 (ZIF-8) has gained high attraction due to its good scalability, conformality, and thickness control. The present study provides new fundamental insights regarding ZIF-8 from zinc oxide (ZnO). During synthesis, ZnO thin films with different percentages open porosity (14.5%–24%) were subjected a 2-methylimidazole for conver...

Metal-organic frameworks (MOFs) are emerging material class for the past few years due to its tailorability characteristics for various applications. However, the research and development (R&D) of MOFs is still scarce for fuel cell system. This may be due to the several difficulties faced in selecting a good MOFs-based electrolyte, which consequently affects both proton conduction and methanol ...

Journal: :Nature chemistry 2012
Guang Lu Shaozhou Li Zhen Guo Omar K Farha Brad G Hauser Xiaoying Qi Yi Wang Xin Wang Sanyang Han Xiaogang Liu Joseph S DuChene Hua Zhang Qichun Zhang Xiaodong Chen Jan Ma Say Chye Joachim Loo Wei D Wei Yanhui Yang Joseph T Hupp Fengwei Huo

Microporous metal-organic frameworks (MOFs) that display permanent porosity show great promise for a myriad of purposes. The potential applications of MOFs can be developed further and extended by encapsulating various functional species (for example, nanoparticles) within the frameworks. However, despite increasing numbers of reports of nanoparticle/MOF composites, simultaneously to control th...

Journal: :Science 2017
A Knebel B Geppert K Volgmann D I Kolokolov A G Stepanov J Twiefel P Heitjans D Volkmer J Caro

Gas transport through metal-organic framework membranes (MOFs) was switched in situ by applying an external electric field (E-field). The switching of gas permeation upon E-field polarization could be explained by the structural transformation of the zeolitic imidazolate framework ZIF-8 into polymorphs with more rigid lattices. Permeation measurements under a direct-current E-field poling of 50...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2016
Amber M Mosier Hanna L W Larson Elizabeth R Webster Mia Ivos Fangyuan Tian Lauren Benz

The adsorption of methanol by a zeolitic imidazolate framework-8 (ZIF-8) nanoparticle thin film was studied in situ using temperature-programmed desorption and X-ray photoelectron spectroscopy under low-temperature, low-pressure conditions. Partial pore penetration was observed at 90 K, but upon increasing the exposure temperature of the film to 130 K pore penetration was significantly enhanced...

2017
Bu Yuan Guan Le Yu Xiong Wen David Lou

Design and construction of metal-organic framework (MOF) composite precursors have recently been considered as a promising strategy for the preparation of different structured metal/carbon-based functional materials. Here, an MOF composite-assisted strategy to synthesize single-holed cobalt/N-doped carbon hollow particles is reported. The yolk-shell polystyrene@zeolitic imidazolate framework-67...

Journal: :Small 2023

Metal–Organic Frameworks The zeolitic imidazolate framework-67 (ZIF-67) gel sintering technique provides a microstructure of densely aggregated, large spherical ZIF-67 crystals, resulting in bonding Cu substrates with shear strength exceeding 30 MPa, comparable to that conventional structural adhesives. More details can be found article number 2300298 by Izuru Miyazaki, Mitsutaro Umehara, and c...

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