Simultaneous enhancement of mechanical properties and CO2 selectivity of ZIF-8 mixed matrix membranes: Interfacial toughening effect of ionic liquid

Li, Hao; Tuo, Linghan; Yang, Kai; Jeong, Hae‐Kwon; Dai, Yan; He, Gaohong; Zhao, Wei

doi:10.1016/j.memsci.2016.03.050

Cited by 255 publications

(129 citation statements)

References 46 publications

Supporting

Mentioning

114

Contrasting

Order By: Relevance

“…[47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64] In this method, ILs are first dissolved in an excess amount of an inert solvent, such as acetone, methanol, or ethanol, to provideb etter dispersion.…”

Section: Wet Impregnation Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Ionic Liquid/Metal–Organic Framework Composites: From Synthesis to Applications

2017

View full text Add to dashboard Cite

Metal-organic frameworks (MOFs) have been widely studied for different applications owing to their fascinating properties such as large surface areas, high porosities, tunable pore sizes, and acceptable thermal and chemical stabilities. Ionic liquids (ILs) have been recently incorporated into the pores of MOFs as cavity occupants to change the physicochemical properties and gas affinities of MOFs. Several recent studies have shown that IL/MOF composites show superior performances compared with pristine MOFs in various fields, such as gas storage, adsorption and membrane-based gas separation, catalysis, and ionic conductivity. In this review, we address the recent advances in syntheses of IL/MOF composites and provide a comprehensive overview of their applications. Opportunities and challenges of using IL/MOF composites in many applications are reviewed and the requirements for the utilization of these composite materials in real industrial processes are discussed to define the future directions in this field.

show abstract

Section: Wet Impregnation Methodsmentioning

confidence: 99%

“…Li et al [55] showedt hat the interfacial adhesion between MOF and polymer can be improved by impregnating ILs into the MOF cages. However,t here is another important issue related to MMMs, which is the adhesionp roblems that may occur betweenM OFs and polymers.…”

Section: The [C 3 Nh 2 Bim][tf 2 N]/nh 2 -Mil-101(cr)/pim-1 Membrane mentioning

confidence: 99%

Ionic Liquid/Metal–Organic Framework Composites: From Synthesis to Applications

2017

View full text Add to dashboard Cite

show abstract

“…[8][9] IL-MOF combinations have been considered recently in the gas separation field. [10][11][12][13][14][15][16] For instance, Chen et al 17 incorporated IRMOF-1 composite and reported a CO 2 /N 2 selectivity of 70 at ambient conditions. To understand the effect of different types of ILs on the separation performances of IL-MOF systems, ILs with the same cations but different anions were studied.…”

Section: Introductionmentioning

confidence: 99%

Improving Gas Separation Performance of ZIF-8 by [BMIM][BF₄] Incorporation: Interactions and Their Consequences on Performance

et al. 2017

View full text Add to dashboard Cite

Gas separation performance of zeolitic imidazolate framework (ZIF-8) was improved by incorporating an ionic liquid (IL), 1-n-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF 4 ]). Detailed characterization based on X-ray diffraction (XRD) and scanning electron microscopy (SEM) confirmed that the morphology of ZIF-8 remains intact upon IL incorporation up to 28 wt%. Thermogravimetric analysis indicated the presence of direct interactions between the IL and metal organic framework (MOF). FTIR spectroscopy illustrated that the anion of the IL was shared between the imidazolate framework and[BMIM] + cation. Adsorption isotherms of CO 2 , CH 4 , and N 2 measured for pristine ZIF-8 and IL-loaded ZIF-8 samples, complemented by Grand Canonical Monte Carlo (GCMC) simulations, showed that these interactions influence the gas uptake performance of ZIF-8. CH 4 and N 2 uptakes decreased in the whole pressure range, while CO 2 uptake first increased by approximately 9% at 0.1 bar in 20 wt% IL-loaded sample, and then, decreased as in the case of other gases. As a result of these changes in gas uptakes occurring at different extend, the corresponding CO 2 /CH 4 , CO 2 /N 2 , and CH 4 /N 2 selectivities enhanced especially at low pressure regime upon IL incorporation. Results showed that CO 2 /CH 4 selectivity increased from 2.2 to 4, while CO 2 /N 2 selectivity more than doubled from 6.5 to 13.3, and CH 4 /N 2 selectivity improved from 3 to 3.4 at 0.1 bar at an IL loading of 28 wt%. The heat of adsorption values (Q st ) measured and simulated for each gas on each sample indicated that interactions between the IL and ZIF-8 strongly influence the gas adsorption behaviors. The change in Q st of CO 2 upon IL-incorporation was more significant than that of other gases, leading to an almost doubling of CO 2 selectivity over CH 4 and N 2 , specifically at low pressures. On the other hand, the selectivity improvement was lost at high pressures because of a strong decrease in the available pore space due to the presence of IL in ZIF-8. These results suggest that such IL/MOF combinations with tunable structures have huge potential towards high performance gas separation applications.

show abstract

“…Starting from the hypothesis that the ILs embedded in the outer surface of MOF fillers could act as sealants between the filler and polymer phases, Li and co-workers [157] proposed to incorporate ILs in MOFs instead of dispersing free ILs and MOFs directly in polymer matrix. IL@ZIF-8 fillers were prepared by soaking activated ZIF-8 in [bmim][Tf 2 N]/methanol solution.…”

Section: Mixed Matrix Membranes (Mmms)mentioning

confidence: 99%

Recent advances in the synthesis and applications of metal organic frameworks doped with ionic liquids for CO 2 adsorption

Cota

Martínez

2017

Coordination Chemistry Reviews

122

View full text Add to dashboard Cite

Simultaneous enhancement of mechanical properties and CO2 selectivity of ZIF-8 mixed matrix membranes: Interfacial toughening effect of ionic liquid

Cited by 255 publications

References 46 publications

Ionic Liquid/Metal–Organic Framework Composites: From Synthesis to Applications

Ionic Liquid/Metal–Organic Framework Composites: From Synthesis to Applications

Improving Gas Separation Performance of ZIF-8 by [BMIM][BF₄] Incorporation: Interactions and Their Consequences on Performance

Recent advances in the synthesis and applications of metal organic frameworks doped with ionic liquids for CO 2 adsorption

Contact Info

Product

Resources

About

Simultaneous enhancement of mechanical properties and CO2 selectivity of ZIF-8 mixed matrix membranes: Interfacial toughening effect of ionic liquid

Cited by 255 publications

References 46 publications

Ionic Liquid/Metal–Organic Framework Composites: From Synthesis to Applications

Ionic Liquid/Metal–Organic Framework Composites: From Synthesis to Applications

Improving Gas Separation Performance of ZIF-8 by [BMIM][BF4] Incorporation: Interactions and Their Consequences on Performance

Recent advances in the synthesis and applications of metal organic frameworks doped with ionic liquids for CO 2 adsorption

Contact Info

Product

Resources

About

Improving Gas Separation Performance of ZIF-8 by [BMIM][BF₄] Incorporation: Interactions and Their Consequences on Performance