Direct spraying approach for synthesis of ZIF-7 membranes by electrospray deposition

Melgar, Víctor Manuel Aceituno; Kwon, Hyuk Taek; Kim, Jinsoo

doi:10.1016/j.memsci.2014.02.020

Cited by 72 publications

(23 citation statements)

References 42 publications

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“…The evaporation method could also be applied with the drop-casting method to make MOF-TFs [140]. Other types of MOF-TFs, such as ZIF-7 (Zn(bIm) 2 ) [141], are also achievable via fast evaporation of the solvent. These contributions demonstrate the potential of the evaporation method in placing MOFs in various microprinting and nanotechnological fields and that faster solvent evaporation could produce more defective and less stable films compared to the controlled release of solvent in a traditional process [142], whereas the films could potentially enhance gas permeation [126].…”

Section: Evaporation Methodsmentioning

confidence: 99%

Metal–Organic Framework Thin Films: Fabrication, Modification, and Patterning

Zhang

Chang

2020

Processes

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Metal–organic frameworks (MOFs) have been of great interest for their outstanding properties, such as large surface area, low density, tunable pore size and functionality, excellent structural flexibility, and good chemical stability. A significant advancement in the preparation of MOF thin films according to the needs of a variety of applications has been achieved in the past decades. Yet there is still high demand in advancing the understanding of the processes to realize more scalable, controllable, and greener synthesis. This review provides a summary of the current progress on the manufacturing of MOF thin films, including the various thin-film deposition processes, the approaches to modify the MOF structure and pore functionality, and the means to prepare patterned MOF thin films. The suitability of different synthesis techniques under various processing environments is analyzed. Finally, we discuss opportunities for future development in the manufacturing of MOF thin films.

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Section: Evaporation Methodsmentioning

confidence: 99%

Metal–Organic Framework Thin Films: Fabrication, Modification, and Patterning

Zhang

Chang

2020

Processes

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“…Sun et al demonstrated the impact of the crystal orientation on gas separation by the preparation of the highly c-oriented NH 2 -MIL-125 membrane with a thickness of 200 nm [57]. Some of the most common techniques used to carry out the seeding method are rubbing [58], dip and spin-coating [54], electrospinning [59], electrospray [60], and layer-by-layer [61].…”

Section: Seeded Assisted or Secondary Growthmentioning

confidence: 99%

Metal and Covalent Organic Frameworks for Membrane Applications

2020

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Better and more efficient membranes are needed to face imminent and future scientific, technological and societal challenges. New materials endowed with enhanced properties are required for the preparation of such membranes. Metal and Covalent Organic Frameworks (MOFs and COFs) are a new class of crystalline porous materials with large surface area, tuneable pore size, structure, and functionality, making them a perfect candidate for membrane applications. In recent years an enormous number of articles have been published on the use of MOFs and COFs in preparation of membranes for various applications. This review gathers the work reported on the synthesis and preparation of membranes containing MOFs and COFs in the last 10 years. Here we give an overview on membranes and their use in separation technology, discussing the essential factors in their synthesis as well as their limitations. A full detailed summary of the preparation and characterization methods used for MOF and COF membranes is given. Finally, applications of these membranes in gas and liquid separation as well as fuel cells are discussed. This review is aimed at both experts in the field and newcomers, including students at both undergraduate and postgraduate levels, who would like to learn about preparation of membranes from crystalline porous materials.

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“…Among other used modulators, sodium formate can be distinguished [55,56]. It also promotes the formation of the ZIF-7 layer on the various supports, for example, aluminum oxide [57,58].…”

Section: Introductionmentioning

confidence: 99%

MW Synthesis of ZIF-7. The Effect of Solvent on Particle Size and Hydrogen Sorption Properties

et al. 2020

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We report here fast (15 min) microwave-assisted solvothermal synthesis of zeolitic imidazolate framework material (ZIF-7). We have optimized solvent composition to achieve high porosity and hydrogen capacity and narrow particle size distribution. It was shown that synthesis in N,N-diethylformamide (DEF) results in a layered ZIF-7 III phase, while N,N-dimethylformamide (DMF) as solvent leads to a pure ZIF-7 phase in microwave conditions. A mixture of toluene with DMF allows the production of pure ZIF-7 material only with the triethylamine additive. Obtained materials were comprehensively characterized. We have pointed out that both X-ray diffraction and infrared spectroscopy could be used for the identification of ZIF-7 or ZIF-7 III phases. Although samples obtained in DMF, and in a mixture of DMF, toluene, and triethylamine were assigned to the pure ZIF-7 phase, solvent composition significantly affected the size of particles in the material and nitrogen and hydrogen adsorption process.

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Direct spraying approach for synthesis of ZIF-7 membranes by electrospray deposition

Cited by 72 publications

References 42 publications

Metal–Organic Framework Thin Films: Fabrication, Modification, and Patterning

Metal–Organic Framework Thin Films: Fabrication, Modification, and Patterning

Metal and Covalent Organic Frameworks for Membrane Applications

MW Synthesis of ZIF-7. The Effect of Solvent on Particle Size and Hydrogen Sorption Properties

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