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Novel ordered mesoporous COK-12 type silica particles were used as fillers in polyimide (Matrimid) based mixed-matrix membranes (MMMs). The highly ordered 2D hexagonal structured filler materials with short and straight pores were synthesized at room temperature under quasi-neutral pH. The gas permeation and SEM results of the MMMs confirmed a homogenous filler dispersion and defect free synthesis of membranes. The presence of large mesopores in the fillers leading to faster diffusion of penetrant gas resulted in higher gas permeabilities in comparison to pristine Matrimid membrane. The potential of the membrane under mixed-gas conditions and different operating temperatures was also evaluated. The membranes showed decreasing trend of activation energy of permeation with the addition of filler. The ease of synthesis, highly ordered structure with short and straight pore channels and improved gas permeation properties makes COK-12a promising filler for industrial gas separations. [ABSTRACT FROM AUTHOR]

Various gas permeation models including Maxwell model, Bruggeman model, Lewis-Nielson model and Pal model were compared via a modelling approach with the relative permeance of CO2 against published experimental data on silica filled polysulfone/polyimide (PSF/PI) mixed matrix membranes (MMMs). However, none of the tested models were able to predict the data with good accurately. A closer look at the cross-sectional image by scanning electron microscopy (SEM) indicated that the fillers were actually prolate ellipsoids dispersed within the matrix. Maxwell-Wagner-Sillar model was then employed to investigate the prolate effect and it was observed that the optimization curves of maximum packing ( φm) and shape factor (n) showed least deviations. The percentage average absolute relative error (AARE %) value for fitted shape factor (nf) was found to be in the range of 1.12-2.17 at 2-10 bar pressure which showed its robustness. A further evaluation from SEM image showed that the shape factor along z-direction (nz) displayed a minimum deviation of 17.52 % for prolates at 0.102 ± 0.01. By using nz as upper limit and estimated shape factor ne through generalization, the error was reduced to 6.01 %. The AAR % deviation was found in the order of nf e < nz,which indicated the importance of shape factor parameter for estimating true CO2 permeance. [ABSTRACT FROM AUTHOR]

Abstract: Ordered mesoporous silica spheres (MCM-41) were used as fillers in polyimide (Matrimid) based mixed-matrix membranes (MMMs). The filler particles were functionalized with sulfonic acid (–SO3H) groups to increase the separation performance of the membranes by increasing the CO2 solubility. The fast diffusion of gases through the mesoporous materials, accompanied by this increased interaction with CO2, resulted in the simultaneous increase of gas permeability and selectivity. The functionalized membranes showed up to 31% increase in CO2 permeability and 14% increase in CO2/CH4 selectivity. In order to study the stability of these newly developed MMMs, they were tested at different operating conditions (temperatures, mixed-gas feeds and CO2 feed concentration). [Copyright &y& Elsevier]

Abstract: Mixed matrix membranes (MMMs) can potentially improve the separation performance of traditional polymeric membranes while still maintaining their processing advantages and lower costs. In this work, MMMs composed of acrylate derivatized polysulfone and functionalized mesoporous MCM-41 were prepared by solution casting. The voids at the polymer-filler interface were removed by the introduction of covalent linkages between the modified polymer and the functionalized fillers. Gas permeation results and SEM images of the synthesized MMMs confirmed a good adhesion and dispersion of the fillers within the polymer matrix. In comparison to MMMs with unmodified MCM-41, covalently linked MCM-41 fillers rendered the MMMs significantly higher CO2/CH4 and CO2/N2 selectivities due to the presence of a covalent link between the –NH2 group of the filler and the acrylate of the polymer. The highest ideal selectivities obtained here for CO2/N2 and CO2/CH4 were 32.97 and 31.48 (CO2 permeability=9.13Barrer), respectively. Different operating temperatures were also studied and activation energies calculated. [Copyright &y& Elsevier]

A combination of organic filler exhibiting CO 2 philic nature with a polymer to develop mixed matrix membranes (MMMs) can capture CO 2 efficiently. This work reports the synthesis of perylene filler and polysulfone (PSf)-based MMMs via solution casting method. The successful incorporation of fillers, uniformity/asymmetric, and amorphous nature of MMMs were investigated by FT-IR, FESEM, and PXRD analysis, respectively. MMMs demonstrated high thermal stability with significant weight retention over 750 °C investigated by TGA analysis. The existence of Lewis's basic functionalities, hydrogen bonding, and π-π bonds between the filler-polymer resulted in the formation of highly CO 2 philic structure. Results revealed that the perylene is found to be highly porous (1050 m2/g) and compatible with the PSf to form additional channels, enhancement of free PSf volume and tendency to prevent the agglomeration and non-selective interfacial voids. It demonstrated improved permeabilities of CO 2 (138%), CH 4 (59%), and N 2 (60%) without any significant variation in selectivities CO 2 /CH 4 (3%) and CO 2 /CH 4 (7%). Similarly, mixed gas permeabilities were improved for (CO 2 –CH 4 – 119%) and (CO 2 –N 2 – 116%) along with enhanced selectivities (CO 2 –CH 4 – 50%) and (CO 2 –N 2 – 46%). Furthermore, the influence of temperature on gas permeabilities revealed improved kinetic energy and flexibility in the polymer chains. The mechanical strength analysis revealed high filler-polymer compatibility. These results revealed great potential of MMMs for efficient CO 2 separation from pre- and post-combustion sources. • Organic perylene filler incorporated PSf MMMs were synthesized and characterized. • Synthesized Membranes demonstrated high mechanical strength. • Pure and binary gas permeation behavior for CO 2 /CH 4 and CO 2 /N 2 was investigated. • Temperature influence on permeabilities revealed improved kinetic energies. [ABSTRACT FROM AUTHOR]

[Display omitted] • Novel MOF, BIT-72, was synthesized and modified by plasma of N 2 and O 2. • MMM were fabricated with BIT-72 and plasma modified BIT-72. • CO 2 /CH 4 and CO 2 /N 2 selectivity of 30.96 and 56.28 was achieved respectively with BIT-72 MMM. • CO 2 /CH 4 and CO 2 /N 2 selectivity was enhanced to 43.07 and 72.64 respectively with N 2 -BIT-72 MMM. • CO 2 /CH 4 and CO 2 /N 2 selectivity was enhanced to 37.28 and 66.21 respectively with O 2 -BIT-72 MMM. Gas separation membranes are a key development in eradication of harmful greenhouse gases such as carbon dioxide (CO 2). Different strategies have been utilized to enhance membrane performance and to overcome their drawbacks. In this study a unique approach has been utilized to enhance membrane performance. Initially mixed matrix membranes (MMM) were fabricated with a novel metal-organic framework (MOF), namely BIT-72 incorporated in Pebax®1657 matrix. At 30% loading of BIT-72, CO 2 /CH 4 and CO 2 /N 2 selectivities of 30.96 and 56.28 were achieved respectively with CO 2 permeability of 139 Barrer. To further enhance the performance of the MMM, BIT-72 was treated with plasma of N 2 or O 2 gases to prepare MMMs with same polymer (N 2 -BIT-72 MMM and O 2 -BIT-72 MMM, respectively). As a result, CO 2 /CH 4 and CO 2 /N 2 selectivity was enhanced to 43.07 and 72.64 respectively for N 2 plasma treated BIT-72 MMM (CO 2 permeability 146 Barrer) and for O 2 plasma treated BIT-72 MMM (CO 2 permeability 145 Barrer) CO 2 /CH 4 and CO 2 /N 2 selectivity was increased to 37.28 and 66.21 respectively. Plasma modified BIT-72 MMM showed promising results for further applications. [ABSTRACT FROM AUTHOR]

• Preparation of new types of MMMs based on Polysulfone and SO 3 -H functionalized UiO-66. • Good adhesion and dispersion of the fillers within the polymer matrix. • Simultaneous increase in gas permeability and selectivity with increase in the MOF content. Functionalized mixed matrix membranes (MMMs) have the potential to upgrade the separation performance of conventional polymeric membranes while as yet keeping their processing benefits and lower costs. This study investigated the highly stable zirconium based metal-organic framework UiO-66 functionalized with sulfonic group, which was grafted by silane coupling agent mercaptopropyl trimethoxysilane. Sulfonic group imparted high separation properties to UiO-66. Polysulfone (PSf) was used as a polymer matrix and MMMs were synthesized for non-functionalized and functionalized UiO-66; and their results were compared. The characterization and permeation results ascribed that functionalized UiO-66 adhered well with the PSf matrix. The results demonstrated that increasing sulfonic group concentration resulted in higher selectivities owing to their high affinity towards CO 2 gas molecules. The MMMs exhibited high CO 2 permeabilities and selectivities under pure and mixed gas conditions; and proved this material promising for CO 2 separation. In order to evaluate the practical commercial viability of these MMMs, investigation was conducted under different temperatures and compared with existing literature. [ABSTRACT FROM AUTHOR]

Highlights • High performance MMMs comprising of Bio-MOF-1 and PSf matrix were synthesized. • Bio-MOF-1 crystals showed well defined rectangular-like shapes and smooth surfaces. • MMMs exhibited good dispersion and interaction of the filler in the polymer matrix. • MMMs were tested for CO 2 separation from single and mixed gas (CO 2 /CH 4 and CO 2 /N 2). • MMMs showed remarkably higher selectivity of CO 2 coupled with improved permeability. Abstract This paper reports the development of high performance mixed matrix membranes (MMMs) comprising of bio metal-organic framework (Bio-MOF-1) and polysulfone (PSf) polymer matrix. For the very first time, a Bio-MOF was used as filler in MMMs. Bio-MOF-1 crystals showed well defined rectangular-like shapes (nano-bars) with lengths of ∼0.5–4.0 µm and widths of ∼0.05–0.20 µm and smooth surfaces. SEM images of membranes demonstrate good dispersion and interaction of the filler in the polymer matrix, even at high loadings. The gas transport properties of MMMs with Bio-MOF-1 loading up to 30 wt% were investigated, and the results showed such MMMs had a CO 2 permeability of 16.57 Barrer and ideal selectivity of 42.6 and 45.6 for CO 2 /CH 4 and CO 2 /N 2 respectively. This corresponds to an increase in 168% and 58% for CO 2 permeability and ideal selectivity respectively in comparison to pristine polymer membranes. Analysis of solubility-diffusivity in the MMMs revealed that the presence of adeninate amino and pyrimidine Lewis basic sites that decorate the pores and have relatively narrow pore dimensions in Bio-MOF-1 can greatly enhance the adsorption of the CO 2 molecules. All synthesized MMMs were tested at different condition of CO 2 feed concentration, various operating temperatures and their activation energies were also calculated. Finally, the comparison with relevant literature showed that even without any functionalization of Bio-MOF-1, it showed higher selectivity than amine functionalized MOFs and quite comparable permeability. [ABSTRACT FROM AUTHOR]

• MMMs based on PSf and pyrazole functionalized MCM-41 for CO 2 Capture. • Good dispersion of the functionalized fillers in the polymer matrix. • Simultaneous increase in permeability and selectivities was obtained. Polymeric membranes are one of the widely used materials of choice for CO 2 capture from major industrial sources. However, the current generation of polymeric materials are unable to keep up with the increasing separation needs of CO 2 from the air (CO 2 /N 2) or natural gas (CO 2 /CH 4) on an industrial scale due to their so-called permeability-selectivity tradeoff. In an effort to improve the overall gas separation performance of polymeric membranes, mixed matrix membranes (MMMs) have been suggested as a substitute strategy. In this study, Polysulfone (PSf) based MMMs were prepared by incorporating pyrazole modified MCM-41 mesoporous silica (MP) as a nano-filler in the polymer matrix to enhance the gas separation properties of membranes. MCM-41 nano-filler was synthesized and functionalized by post-grafting technique to prepare the MMMs of three different loadings (10, 20, and 30 wt%). All the membranes were characterized for physical, chemical, and thermal analysis. The CO 2 gas separation performance of membranes was assessed, and the results concluded that the MCM-41-based MMMs showed the tradeoff between permeability and selectivity in the case of ideal and mixed gases. This permeability-selectivity trade-off is solved by the MP-based MMMs due to the presence of CO 2 -philic functional groups present on the surface of membranes. The PSf-MP membrane with the highest nanofiller loading (30 wt%) showed 79% more permeability than the pure PSf membrane. Additionally, it showed a significant enhancement of 33% and 51% in ideal selectivity for CO 2 /CH 4 and CO 2 /N 2 , respectively, compared to pure PSf membrane. These findings support the lack of membrane faults, the enhanced filler/polymer interface, and the remarkable nano-filler dispersion in the polymer matrix. The excellent outcomes demonstrated the potential of these membranes for more industrial gas separation applications. [ABSTRACT FROM AUTHOR]

Mixed Matrix Membranes (MMMs) with hybrid organic-inorganic characteristics offer a strong alternative to traditional polymer-based membranes to reduce the trade-off between gas permeability and selectivity. This work incorporated lanthanum-Metal Organic Frameworks in the Matrimid to fabricate MMMs. To understand the effects of nano-filler on membranes' morphology, porosity, thermal stability, and chemical composition, MMMs were fabricated with three different loadings of nano-filler, i.e., 10, 20 and 30 wt%. The selectivity and permeability of CH 4 , CO 2 , and N 2 gases through MMMs were investigated at 10 bar pressure and temperatures ranging from 25 to 55 °C. All MMMs exhibited enhanced CO 2 permeation with increased nano-filler loading because the porous nano-filler provided additional channels and fractional free volume in the polymer matrix. The 30 wt% loaded membrane showed a 183% increase in permeability of CO 2 than neat membrane. With increasing nano-filler loading, the selectivity of MMMs increased from 34.1 to 48.45 for CO 2 /N 2 and from 36.2 to 54.67 for CO 2 /CH 4 , confirming the absence of membrane defects, improved filler/polymer interface, and excellent dispersion of nano-filler in the polymer matrix. The results proved that these membranes could be further used for gas separation industrial applications. [Display omitted] • Lanthanum-Metal Organic Frameworks were synthesized and MMMs with Matrimid were prepared. • XRD, SEM, and FTIR confirmed the successful synthesis of rod-shaped MOF particles. • MMMs showed simultaneous enhancement in CO 2 permeability and selectivity. [ABSTRACT FROM AUTHOR]

Mesoporous silica particles after extraction from rice husk ash were used as fillers in polysulfone based mixed-matrix membranes (MMMs). The fillers were functionalized with 4-aminophenazone (4-AMP) to enhance the CO 2 -philic properties. The attractive feature of this research was the utility of extracted silica from a biological waste-the rice husk ash. A good dispersion and adhesion of the filler within the polymer matrix were confirmed by the gas permeation results, SEM images and FTIR analysis. The results revealed that all MMMs showed high permeabilities in comparison to pristine polysulfone membrane. The higher gas permeabilities were attributed to the presence of large mesopores in the filler that led to faster diffusion of the penetrant gas. The functionalized silica showed significantly higher CO 2 /CH 4 and CO 2 /N 2 selectivities. The highest ideal selectivities obtained for CO 2 /N 2 and CO 2 /CH 4 at a maximum of 40% filler loading, were 32.79 and 33.31 respectively. All synthesized membranes were tested at various operating temperatures and their activation energies were also calculated. The highly ordered structures with short and straight pore channels and improved gas permeation properties warrant the silica extracted from rice husk as promising filler for industrial gas separation under varying conditions of temperature. [ABSTRACT FROM AUTHOR]

Mixed matrix membranes (MMMs) have a potential to improve the separation performance of polymeric membranes while maintaining their advantages of easy processing and lower costs. In this work, series of MMMs were developed via solution casting by adding porous carbon–silica nanocomposite (CSM) fillers to a readily available Matrimid® membrane. CSMs were prepared by a hard template synthesis technique to get a tuneable porosity and surface chemistry which is controlled by the optimization of the filler porosity using carbon deposition, the pyrolysis conditions, and the maximization of polarity via oxygen functional groups. SEM images of the synthesized MMMs confirmed the good adhesion and dispersion of the fillers within the polymer matrix. The separation results demonstrate that the overall separation efficiency is increased by the addition of a carbon phase, providing an increased affinity for the CO 2 gas molecules next to the creation of extra porosity and free volume. It was showed that significantly improved CO 2 mixed gas selectivity and permeability for CO 2 :N 2 and CO 2 :CH 4 gas mixtures at 9 bar and 308 K was achieved. For gas mixtures with a 50:50 (CO 2 :N 2 ) feed composition, a 2-fold and 6-fold increase of the mixed gas selectivity (up to 42.5) and permeability (up to 27 Barrer) compared to unfilled PI was achieved, respectively. The performance of the membranes was compared to the existing literature data. [ABSTRACT FROM AUTHOR]

Mixed matrix membranes (MMMs) are synthesized for efficient CO 2 separation released from various anthropogenic sources, which are due to global environmental concerns. The synergetic effect of porous nitrogen-rich, CO 2 -philic filler and polymer in mixed matrix-based membranes (MMMs) can separate CO 2 competent. The development of various loadings of porphyrin poly(N-isopropyl Acryl Amide) (P-NIPAM)as functionalized organic fillers (5–20%) in polysulfone (PSU) through solution casting is carried out followed by the various characterizations including field emission scanning electron microscopy (FESEM), X-ray diffraction analysis (XRD), Fourier Transform Infrared Spectrometer(FT-IR) analysis and pure and mixed gas permeations ranging from 2 to 10 bar feed pressure. Due to both organic species interactions in the matrix, well-distributed fillers and homogenous surfaces, and cross-sectional structures were observed due to π-π interactions and Lewis's basic functionalities. The strong affinity of porous nitrogen-rich and CO 2 -philic fillers through gas permeation analysis showed high CO 2 /CH 4 and CO 2 /N 2 gas performance that surpassed Robeson's upper bound limit. Comparatively, MMMs showed improved CO 2 /CH 4 permeabilities from 87.5 ± 0.5 Barrer to 88.2 ± 0.9 Barrer than pure polymer matrix. For CO 2 /N 2 , CO 2 permeabilities improved to 75 ± 0.8 Barrer than pure polymer matrix. For both gas pairs (CO 2 /CH 4 , CO 2 /N 2), respective pureselectivities (84%; 86%) and binary selectivities (85% and 85%)were improved. Various theoretical gas permeation models were used to predict CO 2 permeabilities for MMMs from which the modified Maxwell-Wagner-Sillar model showed the least AARE% of 0.87. The results showed promising results for efficient CO 2 separation due to exceptional functionalized P-PNIPAM affinitive properties. Finally, cost analysis reflected the inflated cost of membranes production for industrial setup using indigenous resources. [Display omitted] • Development of porphyrin poly(N-isopropyl acryl amide) (P-NIPAM) based functionalized organic fillers in Polymer matrix. •Characterizations and CO 2 , CH 4 , and N 2 permeabilities improved by 97%, 82%, and 81%, respectively. •Modified Maxwell-Wagner-Sillar model showed least AARE% of 0.87. [ABSTRACT FROM AUTHOR]

• Zn-Co-ZIF/PIM-1 and ZIF-8/PIM-1 MMMs were fabricated to enhance alcohol recovery. • MMMs showed an anti-tradeoff effect which is more significant in Zn/Co-ZIF/PIM-1. • Zn-Co-ZIF/PIM-1 showed a higher separation factor, which increased with loadings. • ZIF-8/PIM-1 showed a higher separation factor which remained constant with loadings. Novel mixed matrix membranes (MMMs) were fabricated by incorporating bimetallic Zn/Co-ZIF nanoparticles into the prototypical polymer of intrinsic microporosity (PIM-1). The morphological and structural characteristics of Zn/Co-ZIF and ZIF-8 were analyzed with XRD, FTIR, BET and SEM. The characterization results showed that the Zn/Co-ZIF is isostructural to ZIF-8 occupying the same crystallographic sites, however, Zn/Co-ZIF has smaller BET surface area and lower pore volume than ZIF-8. The SEM images of fabricated MMMs demonstrated good dispersion and interaction of the filler in the polymer matrix, even at high loadings. The addition of hydrophobic nanoparticles enhanced the hydrophobicity of the MMMs, and relatively more for the Zn/Co-ZIF/PIM. The MMMs were analyzed for their separation performance of two binary mixtures made of ethanol/water and butanol/water comprising 5 wt% alcohol, via pervaporation. Flux and separation factor of both alcohols increased with filler loadings in both ZIF-8/PIM-1 and Zn/Co-ZIF/PIM-1 membranes, showing an anti-tradeoff effect which is more significant in Zn/Co-ZIF/PIM-1 membranes. Zn/Co-ZIF/PIM-20 wt% membranes showed 129% higher separation in comparison with pristine PIM-1 membranes. Moreover, not only did the Zn/Co-ZIF/PIM-1 membranes show a higher separation factor, but they also had a higher rate of increase with increased loadings, which was quasi-constant for ZIF-8/PIM-1 membranes. ZIF-8/PIM-1 at filler loading of 20 wt% showed the highest normalized flux of 139 kg.µm.m−2.h−1. [ABSTRACT FROM AUTHOR]

The synergetic effect of nitrogen-rich and CO 2 -philic filler and polymer in mixed matrix-based membranes (MMMs) can separate CO 2 competently. The introduction of well-defined nanostructured porous fillers of pores close to the kinetic diameter of the gas molecule and polymer matrix compatibility is a challenge in improving the gas transportation characteristics of MMMs. This study deals with the preparation of porphyrin filler and the polysulfone (PSf) polymer MMMs. The fillers demonstrated uniform distribution, uniformity, and successful bond formation. MMMs demonstrated high thermal stability with a glass transition temperature in the range of 480–610 °C. The porphyrin filler exhibited microporous nature with the presence of π-π bonds and Lewis's basic functionalities between filler-polymer resulted in a highly CO 2 -philic structure. The pure and mixed gas permeabilities and selectivity were successfully improved and surpass the Robeson's upper bound curve's tradeoff. Additionally, the temperature influence on CO 2 permeability revealed lower activation energies at higher temperatures leading to the gas transport facilitation. This can be granted consistency and long-term durability in polymer chains. These results highlight the unique properties of porphyrin fillers in CO 2 separation mixed matrix membranes and offer new knowledge to increase comprehension of PSf performance under various contents or environments. [Display omitted] • Porphyrin filler and PSf polymer based MMMs were synthesized and characterized. • Porphyrin filler exhibited high specific surface area of 980 m2/g. • CO 2 , CH 4 , and N 2 permeabilities improved by 97%, 82%, and 81%, respectively. • Influence of temperature on CO 2 permeation behavior is reported. [ABSTRACT FROM AUTHOR]

• MMMs based on PSf and pyrazole functionalized SBA-16 for CO 2 Capture. • Good dispersion of the functionalized fillers in the polymer matrix. • Simultaneous increase in permeability and selectivities was obtained. Mixed matrix membranes were prepared by incorporating pyrazole functionalized SBA-16 type mesoporous silica as filler in polysulfone (PSf) matrix. The structure, morphology, and porosity of functionalized filler were confirmed by Fourier transform infrared (FTIR) spectra, scanning electron microscope (SEM) images, 13C NMR spectra and N 2 adsorption-desorption analysis. A good uniform interaction of filler with polymer matrix was observed for all membranes. The porosity of filler enhanced the CO 2 gas diffusivity through the membrane leading to increased CO 2 permeability of up to 14.43 Barrer (116% increase) at the highest filler loading of 30%. The presence of CO 2 -philic functional groups resulted in a simultaneous increase in both ideal and mixed gas CO 2 /N 2 selectivity of 42.44 and 46.13 respectively (68.34% and 87.06% increase respectively), compared to non-functionalized filler). [ABSTRACT FROM AUTHOR]

• NOTT-300 crystals were synthesized and Pebax® 1657 based MMMs were prepared. • XRD, SEM, and FTIR confirmed the successful synthesis of NOTT-300 crystals. • CO 2 permeability of the MMMs was increased by 380%, and CO 2 /CH 4 selectivity up to 68% • NOTT-300 has high porosity and CO 2 philic properties with exceptional CO 2 capturing. Mixed matrix membranes (MMMs) are a promising alternative to conventional polymeric membranes but suffer from compatibility issues of polymer and filler. This study reports simultaneous improvement in CO 2 permeability and selectivity employing novel metal organic frameworks (MOFs), namely NOTT-300 and Pebax®1657 as polymer matrix. MMMs are characterized and investigated for separation of CO 2 /CH 4 and CO 2 /N 2 gas mixtures at ambient and elevated temperatures. Well-dispersed NOTT-300 particles are observed in SEM images of MMMs with no visible defects even at higher loadings. Single and mixed gas permeation results showed their outstanding performance exhibiting a simultaneous upsurge in CO 2 permeability and CO 2 /CH 4 and CO 2 /N 2 selectivity. In comparison to neat Pebax®1657 membrane, the incorporation of NOTT-300 at 40% filler loading enhanced the permeability of CO 2 by 380%, and selectivity to 68% and 26% for CO 2 /CH 4 and CO 2 /N 2 respectively. The results proved the potential of NOTT-300 as filler material for MMMs aimed at CO 2 capture because of their high porosity and CO 2 philic properties. [ABSTRACT FROM AUTHOR]