Mixed matrix membranes incorporated with cubic-MOF-5 for improved polyetherimide gas separation membranes: Theory and experiment

Arjmandi, Mehrzad; Pakizeh, Majid

doi:10.1016/j.jiec.2013.12.091

Cited by 91 publications

(61 citation statements)

References 51 publications

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“…According to obtained results (with no surface modifying agent), it can be claimed that the T-MOF-5/PEI contact is acceptable as also is approved by the gas permeation measurements. Similar results for C-MOF-5/PEI MMMs are reported by Arjmandi and Pakizeh [29].…”

Section: -1 Membrane Characterizationsupporting

confidence: 89%

“…3. The BET surface area of T-MOF-5 was found to be 1,280 m 2 /g and is lower from C-MOF-5 [29]. The lower BET surface of T-MOF-5 than C-MOF-5 is attributed to ZnO molecule [22].…”

Section: T-mof-5 Nanocrystalsmentioning

confidence: 85%

“…Fig. 2 shows the FT-IR spectra of the T-MOF-5 compared to C-MOF-5 [29], over the wave-number range 4,000-400 cm −1 . The presence of two peaks at 1,590 and 1,504 cm −1 and one peak at 1,391 cm −1 corresponds to the symmetric and asymmetric stretching of COO groups in carboxylic, respectively [38,39].…”

Section: T-mof-5 Nanocrystalsmentioning

confidence: 99%

“…However, H 2 O 2 can also result in the production of ZnO [22]. In contrast, no extra ZnO molecule was present in C-MOF-5 structure because H 2 O 2 was not employed in the synthesis [22,29].…”

Section: T-mof-5 Nanocrystalsmentioning

confidence: 99%

“…In our previous work [29], we reported the synthesis and characterization of C-MOF-5/PEI MMMs to study the effect of C-MOF-5 on the CH 4 , CO 2 , N 2 , and H 2 gas permeation through the C-MOF-5/PEI MMMs. The results showed that the C-MOF-5 nanocrystals facilitated the gas transport along the membranes, and for all gases the permeabilities, diffusivities and solubilities of the MMMs increased with increasing loading of C-MOF-5 nanocrystals at ambient temperature and pressure of 6 bar.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

The role of tetragonal-metal-organic framework-5 loadings with extra ZnO molecule on the gas separation performance of mixed matrix membrane

Arjmandi

Pakizeh

Pirouzram

2015

Korean J. Chem. Eng.

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The effect of more ZnO molecule in tetragonal structure of MOF-5 than cubic structure on the gas permeation properties of T-MOF-5/polyetherimide mixed matrix membranes was investigated. T-MOF-5 was first successfully synthesized and carefully characterized by XRD, FTIR, SEM and N 2 adsorption technique at 77 K. Novel T-MOF-5/PEI MMMs were prepared using solution casting method and characterized by FTIR and SEM. The SEM pictures of the MMMs showed that T-MOF-5 nanocrystals changed the morphology of PEI and exhibited acceptable contacts between the filler particles and the polymer chains. Gas permeation properties of these membranes with different T-MOF-5 contents were studied for pure H 2 , CO 2 , CH 4 and N 2 gases. Permeation measurement showed that the all gases' permeability, diffusivity and solubility were increased with T-MOF-5 loading. H 2 permeability and the ideal selectivity of H 2 /CO 2 and H 2 /CH 4 in MMM with 25 wt% loading of T-MOF-5 nanocrystals were increased. This behavior was attributed to more ZnO molecule in T-MOF-5 structure. The experimental gas permeations through T-MOF-5/PEI nanocomposite with different filler loadings were fitted on Higuchi model. Good agreement between the experimental data and the predicted gas permeability was obtained.

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Section: -1 Membrane Characterizationsupporting

confidence: 89%

“…3. The BET surface area of T-MOF-5 was found to be 1,280 m 2 /g and is lower from C-MOF-5 [29]. The lower BET surface of T-MOF-5 than C-MOF-5 is attributed to ZnO molecule [22].…”

Section: T-mof-5 Nanocrystalsmentioning

confidence: 85%

Section: T-mof-5 Nanocrystalsmentioning

confidence: 99%

Section: T-mof-5 Nanocrystalsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The role of tetragonal-metal-organic framework-5 loadings with extra ZnO molecule on the gas separation performance of mixed matrix membrane

Arjmandi

Pakizeh

Pirouzram

2015

Korean J. Chem. Eng.

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Physical modification of polymeric support layer for thin film composite forward osmosis membranes by metal–organic framework‐based porous matrix membrane strategy

Arjmandi

Chenar

Peyravi

et al. 2019

J of Applied Polymer Sci

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Physical modification of support layers (SLs) for thin-film composite (TFC) forward osmosis (FO) membranes is the main goal of this study. Accordingly, the strategy of metal-organic framework (MOF)-based porous matrix membrane (PMM) was used for the fabrication of controllable SLs. Fourteen different TFC FO membranes were successfully fabricated by interfacial polymerization (IP) technique over the fourteen different SLs made of polyetherimide (PEI), polyethersulfone (PES), and twelve MOF-based PMM. The controllable MOF particles, fabricated SLs, and TFC membranes were characterized by Fourier-transform infrared spectroscopy (FTIR), powder X-ray diffraction (PXRD), dynamic light scattering (DLS), field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), contact angle (CA), inductively coupled plasma (ICP), and developed SHN1 method. The results showed that the PMM strategy can lead to an increase in the degree of crosslinking of polyamide (PA) as a result of physical modification of the original SLs. Also, the PMM strategy reduced the structural parameters and hence the internal concentration polarization (ICP) was controlled. However, according to the characteristic curve, physical modification of the structure of PES and PEI by MOF-based PMM strategy caused a small and dramatic effect (respectively) on the performance of the TFC FO membranes. the effective driving force (EDF) across the semipermeable membrane, causing reduced membrane performance. The intensity of DICP can be determined using structural parameter (S), which is mainly depended on the physicochemical properties of the SL. To reduce S value (or reduce DICP) in FO membranes, SL should be fabricated with high porosity (ε), low tortuosity (τ), and thin Additional Supporting Information may be found in the online version of this article.

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Changes in free volume and gas permeation properties of poly(vinyl alcohol) nanocomposite membranes modified using cage‐structured polyhedral oligomeric silsesquioxane

Swapna

Kaliyathan

Abhisha

et al. 2020

J of Applied Polymer Sci

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The present work reports the effect of various organically functionalized polyhedral oligomeric silsesquioxane (POSS) particles on the gas transport properties (N 2 , O 2 , and CO 2 molecules) in poly(vinyl alcohol) (PVA) membranes. The incorporation of polyethylene glycol-POSS (PEG-POSS), octa-tetramethylammonium-POSS (Octa-TMA-POSS) and m-POSS (Octa-TMA-POSS molecule was modified using cetyltrimethyl ammonium bromide) led to the enhancement in CO 2 separation performance of PVA, among which, PEG-POSS exhibited highest CO 2 separation due to the dipole-quadrupolar interaction of CO 2 with ethylene oxide group in POSS. Octa-TMA-POSS and m-POSS reduced the O 2 and N 2 permeability of the PVA membrane due to the reduction in the number of permeating pathways as compared to pure PVA. Free volume of the membranes was evaluated by positron annihilation lifetime spectroscopic (PALS) and coincidence Doppler broadening measurements. PALS confirms the increase in polymer free volume in PVA/POSS system due to the presence of rigid and spherical POSS molecule, which could enter in the polymer chain and provide viable pathway for molecular transport. Maxwel-Wagner-Sillar and Higuchi models were applied for the theoretical prediction of permeability of the fabricated membranes.

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Mixed matrix membranes incorporated with cubic-MOF-5 for improved polyetherimide gas separation membranes: Theory and experiment

Cited by 91 publications

References 51 publications

The role of tetragonal-metal-organic framework-5 loadings with extra ZnO molecule on the gas separation performance of mixed matrix membrane

The role of tetragonal-metal-organic framework-5 loadings with extra ZnO molecule on the gas separation performance of mixed matrix membrane

Physical modification of polymeric support layer for thin film composite forward osmosis membranes by metal–organic framework‐based porous matrix membrane strategy

Changes in free volume and gas permeation properties of poly(vinyl alcohol) nanocomposite membranes modified using cage‐structured polyhedral oligomeric silsesquioxane

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