Study of Separation Behavior of Activated and Non-Activated MOF-5 as Filler on MOF-based Mixed-Matrix Membranes in H2/CO2 Separation

Altaee

et al. 2020

Solid State Sciences

Self Cite

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Section: Resultsmentioning

confidence: 99%

“…As a matter of fact, the presence of any extra species in the MOF-5 pores, which are generated during the synthesis process, changes the MOF-5 structure from activated to nonactivated [5,11,[21][22][23][24]. One of the most important excess molecules, which are present in the non-activated MOF pores is the cluster-oxygen composition (i.e.…”

Section: Introductionmentioning

confidence: 99%

A facile and efficient approach to increase the magnetic property of MOF-5

Altaee

et al. 2020

Solid State Sciences

Self Cite

Macromol. Rapid Commun.

“…However, the CO 2 permeability coefficient of CA is not high, so many efforts have been made to improve the gas separation properties. A series of CA‐based mixed matrix membranes have been designed and fabricated by adding various materials, such as Zeolite Y, [ 14 ] silica, [ 15 ] multi‐wall carbon nanotubes, [ 16 ] NH 2 ‐MIL‐53, [ 17 ] NiFe 2 O 4 , [ 18 ] TiO 2 , [ 18 ] MOF‐5, [ 19 ] and ionic liquid (ILs). [ 20,21 ] Although the CO 2 permeability or/and selectivity can be improved, the increment is limited, due to the poor compatibility and nonuniform distribution.…”

Section: Figurementioning

confidence: 99%

Immobilization of Ionic Liquids with a New Cellulose Ester Containing Imidazolium Cation for High‐Performance CO₂ Separation Membranes

Cheng

Zhang

Yin

et al. 2020

CO2 gas separation is of significant importance to protect the environment and utilize the carbon resource. In this work, two kinds of new cellulose esters containing imidazolium cation, cellulose acetate (CA) 1‐butyl‐3‐methylimidazolium chloride and CA 1‐butyl‐3‐methylimidazolium bis(trifluoromethane sulfonyl)imide (CA‐BmimTf2N), are designed and synthesized. The resultant cationized cellulose esters effectively lock various ionic liquids (ILs) via electrostatic interactions. Due to the strong attraction interactions, the obtained cellulose ester/ILs composite membranes are uniform, smooth, and highly transparent. Moreover, the added ILs with a long alkyl chain in the cation and a bis(trifluoromethane sulfonyl)imide anion remarkably improve the CO2 permeability of the cellulose ester/ILs membranes, because of the dramatic increase of the CO2 diffusion rate. The CA‐BmimTf2N/C10mimTf2N membranes exhibit the highest CO2 permeability, which is 3800% higher than that of CA membrane and 1700% higher than that of CA‐BmimTf2N membrane. More importantly, the CA‐BmimTf2N/C10mimTf2N membranes have good mechanical properties and thermal stability. Such high‐performance CO2 separation membranes with high CO2 permeability, high transparency, and good mechanical property have a huge potential in the practical utilization for gas separation.

“…Recently, metal-organic framework (MOF)based MMM has gained the most interesting due to their excellent properties. [30,31] In contrast to conventional solid fillers, MOF materials are not only easy to synthesize but also possess high surface area, huge porosity, tunable pore size and shape, and open metal sites. [32,33] Nevertheless, there have been few published works reporting the formation of MMM between MOF particles and polymer matrices for dye adsorption and filtration.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Dye Adsorption of Mixed‐Matrix Membrane by Covalent Incorporation of Metal‐Organic Framework with Poly(styrene‐alt‐maleic anhydride)

Cao

Nguyen

et al. 2021

ChemistrySelect

In this study, a novel mixed-matrix membrane (MMM) based on covalent incorporation of poly(styrene-alt-maleic anhydride) (PSMA) with a metal-organic framework (MOF) UiO-66-NH 2 was prepared and utilized for dye removal from aqueous solution. The fabrication of PSMA and UiO-66-NH 2 was carried out by the amidation reaction between the maleic anhydride ring and amino functional group affording crosslinked MOF/PSMA membrane. The separate UiO-66-NH 2 and PSMA solutions were mixed before cast films were produced. The MMM was prepared with final UiO-66-NH 2 wt % content from 0 to 30 % in each membrane. The formation of MMM was confirmed with FT-IR, PXRD, TGA, SEM, and XPS analysis. The MMM having high adsorption capacity was used for the separation of methylene blue (MB) and methyl orange (MO) as organic dye pollutants commonly found in wastewater. The MMM could be recycled and still maintained 75 and 52 % retention of MB and MO on the third reuse cycle, respectively. The results suggest that the MOF incorporated PSMA was an outstanding membrane for the development of filtration techniques for decontamination of water resources.