Mixed matrix membranes (MMMs) using an emerging metal-organic framework (MUF-15) for CO2 separation

Yin, Hang; Alkaş, Adil; Zhang, Yiming; Zhang, Yatao; Telfer, Shane G.

doi:10.1016/j.memsci.2020.118245

Cited by 57 publications

(17 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hence, the incorporation of ZIF-8 could not effectively enhance diffusivity selectivity. Moreover, most reported MOF/PIM-1 MMMs ( 33 , 36 , 38 , 46 , 47 ) contain low MOF loadings (< 20 wt %), i.e., a noncontinuous MOF phase or defective polymer-MOF interfaces. However, in our work, the simultaneous realization of high ZIF-8 content, excellent dispersion, and good interfacial compatibility achieved ultrahigh gas permeabilities and good gas selectivities of symbiosis-inspired MMMs by fully exploiting the unique characteristics of both MOFs and matrix.…”

Section: Resultsmentioning

confidence: 99%

Symbiosis-inspired de novo synthesis of ultrahigh MOF growth mixed matrix membranes for sustainable carbon capture

Zhu

Jiang

et al. 2021

Proc. Natl. Acad. Sci. U.S.A.

130

View full text Add to dashboard Cite

Mixed matrix membranes (MMMs) are one of the most promising solutions for energy-efficient gas separation. However, conventional MMM synthesis methods inevitably lead to poor filler–polymer interfacial compatibility, filler agglomeration, and limited loading. Herein, inspired by symbiotic relationships in nature, we designed a universal bottom-up method for in situ nanosized metal organic framework (MOF) assembly within polymer matrices. Consequently, our method eliminating the traditional postsynthetic step significantly enhanced MOF dispersion, interfacial compatibility, and loading to an unprecedented 67.2 wt % in synthesized MMMs. Utilizing experimental techniques and complementary density functional theory (DFT) simulation, we validated that these enhancements synergistically ameliorated CO2 solubility, which was significantly different from other works where MOF typically promoted gas diffusion. Our approach simultaneously improves CO2 permeability and selectivity, and superior carbon capture performance is maintained even during long-term tests; the mechanical strength is retained even with ultrahigh MOF loadings. This symbiosis-inspired de novo strategy can potentially pave the way for next-generation MMMs that can fully exploit the unique characteristics of both MOFs and matrices.

show abstract

Section: Resultsmentioning

confidence: 99%

Symbiosis-inspired de novo synthesis of ultrahigh MOF growth mixed matrix membranes for sustainable carbon capture

Zhu

Jiang

et al. 2021

Proc. Natl. Acad. Sci. U.S.A.

130

View full text Add to dashboard Cite

show abstract

“…Among them, mixed-matrix membranes (MMMs), consisting mainly of polymer and inorganic materials, have been recognized as an essential alternative to overcome the trade-off between permeability and selectivity and bridge the gap with inorganic membranes [ 7 ]. Emerging hybrid MMMs, possessing a plethora of unique properties, are synthesized by inserting different inorganic fillers into the polymer matrix [ 8 ]. MMMs combine the advantages of both inorganic particles and polymer membranes, integrating the improved separation capabilities of filler particles with the polymer’s good processability and mechanical properties [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

CeO2-Blended Cellulose Triacetate Mixed-Matrix Membranes for Selective CO2 Separation

et al. 2021

View full text Add to dashboard Cite

Due to the high affinity of ceria (CeO2) towards carbon dioxide (CO2) and the high thermal and mechanical properties of cellulose triacetate (CTA) polymer, mixed-matrix CTA-CeO2 membranes were fabricated. A facile solution-casting method was used for the fabrication process. CeO2 nanoparticles at concentrations of 0.32, 0.64 and 0.9 wt.% were incorporated into the CTA matrix. The physico-chemical properties of the membranes were evaluated by SEM-EDS, XRD, FTIR, TGA, DSC and strain-stress analysis. Gas sorption and permeation affinity were evaluated using different single gases. The CTA-CeO2 (0.64) membrane matrix showed a high affinity towards CO2 sorption. Almost complete saturation of CeO2 nanoparticles with CO2 was observed, even at low pressure. Embedding CeO2 nanoparticles led to increased gas permeability compared to pristine CTA. The highest gas permeabilities were achieved with 0.64 wt.%, with a threefold increase in CO2 permeability as compared to pristine CTA membranes. Unwanted aggregation of the filler nanoparticles was observed at a 0.9 wt.% concentration of CeO2 and was reflected in decreased gas permeability compared to lower filler loadings with homogenous filler distributions. The determined gas selectivity was in the order CO2/CH4 > CO2/N2 > O2/N2 > H2/CO2 and suggests the potential of CTA-CeO2 membranes for CO2 separation in flue/biogas applications.

show abstract

“…An environmental crisis associated with climate change is due to CO 2 emissions [ 1 ]. As a consequence, sea levels are rising, biodiversity is compromised and the animal population is slowly becoming endangered [ 2 , 3 ].…”

Section: Global Warmingmentioning

confidence: 99%

A Prospective Concept on the Fabrication of Blend PES/PEG/DMF/NMP Mixed Matrix Membranes with Functionalised Carbon Nanotubes for CO2/N2 Separation

Mahenthiran

Jawad

2021

Membranes

View full text Add to dashboard Cite

With an ever-increasing global population, the combustion of fossil fuels has risen immensely to meet the demand for electricity, resulting in significant increase in carbon dioxide (CO2) emissions. In recent years, CO2 separation technology, such as membrane technology, has become highly desirable. Fabricated mixed matrix membranes (MMMs) have the most desirable gas separation performances, as these membranes have the ability to overcome the trade-off limitations. In this paper, blended MMMs are reviewed along with two polymers, namely polyether sulfone (PES) and polyethylene glycol (PEG). Both polymers can efficiently separate CO2 because of their chemical properties. In addition, blended N-methyl-2-pyrrolidone (NMP) and dimethylformamide (DMF) solvents were also reviewed to understand the impact of blended MMMs’ morphology on separation of CO2. However, the fabricated MMMs had challenges, such as filler agglomeration and void formation. To combat this, functionalised multi-walled carbon nanotube (MWCNTs-F) fillers were utilised to aid gas separation performance and polymer compatibility issues. Additionally, a summary of the different fabrication techniques was identified to further optimise the fabrication methodology. Thus, a blended MMM fabricated using PES, PEG, NMP, DMF and MWCNTs-F is believed to improve CO2/nitrogen separation.

show abstract

Mixed matrix membranes (MMMs) using an emerging metal-organic framework (MUF-15) for CO2 separation

Cited by 57 publications

References 42 publications

Symbiosis-inspired de novo synthesis of ultrahigh MOF growth mixed matrix membranes for sustainable carbon capture

Symbiosis-inspired de novo synthesis of ultrahigh MOF growth mixed matrix membranes for sustainable carbon capture

CeO2-Blended Cellulose Triacetate Mixed-Matrix Membranes for Selective CO2 Separation

A Prospective Concept on the Fabrication of Blend PES/PEG/DMF/NMP Mixed Matrix Membranes with Functionalised Carbon Nanotubes for CO2/N2 Separation

Contact Info

Product

Resources

About