Improved dispersion performance and interfacial compatibility of covalent-grafted MOFs in mixed-matrix membranes for gas separation

Wang, Chongqing; Ren, Guang‐Jie; Wei, Kaifeng; Liu, Donghui; Wu, Tingting; Jiang, Jinlong; Qian, Junfeng; Pan, Yichang

doi:10.1016/j.gce.2020.11.002

Cited by 24 publications

(11 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results were added from the porosimeter and analyzed by an NLDFT/GCMC program as most suitable for mixed‐matrix membrane characteristics as in 23, 24. The average pore radius was calculated by the program using formulas.…”

Section: Methodsmentioning

confidence: 99%

Removal of Phenol from Sour Water by Poly(vinyl Alcohol)/Polyamide‐Reverse Osmosis Membranes

et al. 2022

View full text Add to dashboard Cite

A commercial thin‐film membrane (unmodified) of polyamide improved by poly(vinyl alcohol) (PVA)‐coated membranes (modified) was investigated for separating phenol in sour water by reverse osmosis. Dependences of pressure and pore surface area on flux and phenol rejection were tested. A graphical correlation was found between the relative flux decline and phenol concentration decrease in the feed. The modified membrane provided rejection of 86 % at 2 bar with the highest permeate flux of 8.46 L m−2h−1. The average contact angle for the former membrane was 58.4°, while that for the modified membrane was 49.1°. The reduction in contact angle enhances the surface hydrophilicity of the membrane leading to the antifouling effect. The modified membrane provides 95.4 % flux recovery compared to the unmodified membrane that provides only 66.2 %.

show abstract

Section: Methodsmentioning

confidence: 99%

Removal of Phenol from Sour Water by Poly(vinyl Alcohol)/Polyamide‐Reverse Osmosis Membranes

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Cross‐linking or grafting between the amino group of UiO‐66‐NH 2 and polymer matrix ( Figure a) is an effective way to eliminate CO 2 ‐induced plasticization as the covalent bonding restricts the movement of polymer chains and prevent polymer swelling. [ 124,125 ] Wang et al. reported that the cross‐linked UiO‐66‐NH 2 and COOH‐polyimide MMMs enhanced the plasticization pressure to 30 bar, while the pristine COOH‐polyimide plasticized at 10 bar (Figure 6b).…”

Section: Robust Mofs‐based Mmms For Harsh Applicationmentioning

confidence: 99%

“…Similarly, the UiO‐66‐NH 2 /6FDA‐durene MMMs prepared by another group of researchers also showed an improvement in pressure‐induced plasticization from 10 to 18 bar. [ 124 ] The resultant MMMs exhibited CO 2 permeability of 1100 Barrer and CO 2 /CH 4 selectivity of 40 at 35 bar. Other than cross‐linking, the acetamide‐ligand post‐synthetic modification of UiO‐66‐NH 2 to form UiO‐66‐NH‐COCH 3 demonstrated a good interaction between the fillers and 6FDA‐DAM.…”

Section: Robust Mofs‐based Mmms For Harsh Applicationmentioning

confidence: 99%

Metal–Organic Frameworks (MOFs)‐Based Mixed Matrix Membranes (MMMs) for Gas Separation: A Review on Advanced Materials in Harsh Environmental Applications

Goh

Lau

Yong

2022

Small

107

View full text Add to dashboard Cite

The booming of global environmental awareness has driven the scientific community to search for alternative sustainable approaches. This is accentuated in the 13th sustainable development goal (SDG13), climate action, where urgent efforts are salient in combating the drastic effects of climate change. Membrane separation is one of the indispensable gas purification technologies that effectively reduces the carbon footprint and is energy‐efficient for large‐scale integration. Metal–organic frameworks (MOFs) are recognized as promising fillers embedded in mixed matrix membranes (MMMs) to enhance gas separation performance. Tremendous research studies on MOFs‐based MMMs have been conducted. Herein, this review offers a critical summary of the MOFs‐based MMMs developed in the past 3 years. The basic models to estimate gas transport, preparation methods, and challenges in developing MMMs are discussed. Subsequently, the application and separation performance of a variety of MOFs‐based MMMs including those of advanced MOFs materials are summarized. To accommodate industrial needs and resolve commercialization hurdles, the latest exploration of MOF materials for a harsh operating condition is emphasized. Along with the contemplation on the outlook, future perspective, and opportunities of MMMs, it is anticipated that this review will serve as a stepping stone for the coming MMMs research on sustainable and benign environmental application.

show abstract

“… Reducing the accumulation of nanofillers in the copolymer structure using the NH2 functional group  Improving CO2/CH4 separation performance [37] Polysulfone (PSF) Iron pillared cloisite 15A (P-C15A)…”

Section:  Ch4mentioning

confidence: 99%

Recent advances in synthesis and applications of mixed matrix membranes

2021

View full text Add to dashboard Cite

Researchers are currently considering membranes separation processes due to their eco-friendly, process simplicity and high efficiency. Selecting a suitable and efficient operation is the primary concern of researchers in the field of separation industries. In recent decades, polymeric and inorganic membranes in the separation industry have made significant progress. The polymeric and inorganic membranes have been challenged due to their competitiveness in permeability and selectivity factors. A combination of nanoparticle fillers within the polymer matrix is an effective method to increase polymeric and inorganic membranes’ efficiency in separation processes. Mixed matrix membranes (MMMs) have been considered by the separation industry due to high mechanical and physicochemical, and transfer properties. Moreover, gas separation, oil treatment, heavy metal ions removal, water treatment and oil-water separation are common MMMs applications. Selecting suitable polymer blends and fillers is the key to the MMMs construction. The combination of rubbery and glassy polymers with close solubility parameters increases the MMMs performance. The filler type and synthesis methods also affect the morphological and transfer properties of MMMs significantly. Zeolites, graphene oxide (GO), nanosilica, carbon nanotubes (CNTs), zeolite imidazole frameworks (ZIFs) and metal-organic frameworks (MOFs) are used in the MMMs synthesis as fillers. Finally, solution mixing, polymerization in situ and sol-gel are the primary synthesising MMMs methods.

show abstract

Improved dispersion performance and interfacial compatibility of covalent-grafted MOFs in mixed-matrix membranes for gas separation

Cited by 24 publications

References 45 publications

Removal of Phenol from Sour Water by Poly(vinyl Alcohol)/Polyamide‐Reverse Osmosis Membranes

Removal of Phenol from Sour Water by Poly(vinyl Alcohol)/Polyamide‐Reverse Osmosis Membranes

Metal–Organic Frameworks (MOFs)‐Based Mixed Matrix Membranes (MMMs) for Gas Separation: A Review on Advanced Materials in Harsh Environmental Applications

Recent advances in synthesis and applications of mixed matrix membranes

Contact Info

Product

Resources

About