Asymmetric membrane containing electrospun Cu-BTC/poly(vinyl alcohol) for pervaporation dehydration of 1,4-dioxane

Yeang, Qian Wen; Sulong, Abu Bakar; Tan, Soon Huat

doi:10.1016/j.seppur.2017.10.002

Cited by 14 publications

(10 citation statements)

References 44 publications

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“…In recent years, mixed matrix membranes (MMMs) such as Cu‐BTC/PVA, ZIF‐8/PVA, etc. have been used to improve the separation performance and stability of PVA membranes.…”

Section: Introductionmentioning

confidence: 99%

Adjustable pervaporation performance of Zr‐MOF/poly(vinyl alcohol) mixed matrix membranes

Geng

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND: Polymer membranes often display trade-off effects between permeation flux and separation factor in pervaporation, and exploring the strategies for breaking the effects is crucial. In this study, by altering the organic linkers (1,4-benzenedicarboxylate acid, 2-hydroxyterephthalic acid, 2,5-dihydroxyterephthalic acid and biphenyl-4,4-dicarboxylate), UiO-66, UiO-66-OH, UiO-66-(OH) 2 and UiO-67 were prepared and incorporated in poly(vinyl alcohol) (PVA) membranes for pervaporation of 90 wt% ethanol solution for the first time. RESULTS: The membrane properties and pervaporation performances were tuned, and anti-trade-off effects were demonstrated for UiO-66/PVA, UiO-66-OH/PVA and UiO-66-(OH) 2 /PVA mixed matrix membranes (MMMs). For the UiO-66-(OH) 2 /PVA MMM with 1.0 wt% loading, the permeation flux, separation factor and pervaporation separation index (PSI) were increased by 16, 14 and 32% respectively and the water permeance and selectivity were increased by 24 and 10% respectively, while the swelling degree in 90 wt% ethanol declined by 28% in comparison with that of pristine PVA membrane. CONCLUSION: The pervaporation performance of the UiO-66-(OH) 2 /PVA MMM demonstrated good potential in alcohol dehydration.

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“…In recent years, mixed matrix membranes (MMMs) such as Cu‐BTC/PVA, ZIF‐8/PVA, etc. have been used to improve the separation performance and stability of PVA membranes.…”

Section: Introductionmentioning

confidence: 99%

Adjustable pervaporation performance of Zr‐MOF/poly(vinyl alcohol) mixed matrix membranes

Geng

et al. 2018

J of Chemical Tech & Biotech

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“…Contact angles of water and ethylene glycol were measured on the surfaces of dense films and asymmetric UF membranes of co-PAA and co-PBOI (Table 3). The presence of porous layer in UF membranes led to a decrease in contact angle values compared to the dense samples, which was due to the large specific area provided by the porosity and roughness [35]. As seen from Table 3, transformation of co-PAA to co-PBOI increased contact angles of both dense and porous membranes indicating the lower hydrophilic properties of co-PBOI.…”

Section: Resultsmentioning

confidence: 99%

Asymmetric Membranes Based on Copolyheteroarylenes with Imide, Biquinoline, and Oxazinone Units: Formation and Characterization

et al. 2019

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Modern ultrafiltration requires novel perfect membranes with narrow pore size, high porosity, and minimal pore tortuosity to achieve high separation performance. In this work, copolyamic acid (co-PAA) was synthesized and used for the preparation of asymmetric porous membranes by phase inversion technique. Several co-PAA membranes were heated up to 250 °C; during heating, they undergo solid-phase transformation into co-polybenzoxazinoneimide (co-PBOI) via dehydration and cyclization. Comparative characterization of both co-PAA and co-PBOI membranes was realized by scanning electron microscopy, mechanical testing, thermogravimetric analysis, and ultrafiltration experiments. Membrane calibration was carried out using a mixture of seven proteins with different molecular weights. During heat treatment, the molecular weight cut-off of the membranes decreased from 20 × 103 g/mol (co-PAA) to 3 × 103 g/mol (co-PBOI). Abnormally low dispersions of rejection (0.3 for co-PAA and 0.45 for co-PBOI) were observed for the studied membranes; this fact indicates that the membranes possess enhanced resolving power.

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“…Finally, MMM is gained by scraping and drying the composite membrane. MOF-5 [99], ZIF-8 [100], Cu-BTC [101] and other MOF materials have been reported to be added into polymer membrane materials, and have quite good applications, which enhanced the advantages and characteristics other than MMM in separation. Meera et al [102] prepared Cu(BDC) MMMs successfully, which exhibited a 70% increase in the CO 2 /CH 4 selectivity.…”

Section: Cohybridization Synthesismentioning

confidence: 99%

A review on metal organic frameworks (MOFs) modified membrane for remediation of water pollution

Qian

Zhu

2020

Environmental Engineering Research

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Porous metal-organic frameworks (MOFs) have received wide attention on the potential application to separation of pollutants from contaminated water to produce clear water. Recently, the report on MOFs modified membrane in pollution separation is very interesting. The main focus is that adding MOFs onto the surface of the membrane can significantly improve its separation performance and anti-fouling ability. This review took the opportunity to give readers a preliminary and detailing understanding of the basic knowledge of the MOFs modified membrane used in remediation of water pollution.

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Asymmetric membrane containing electrospun Cu-BTC/poly(vinyl alcohol) for pervaporation dehydration of 1,4-dioxane

Cited by 14 publications

References 44 publications

Adjustable pervaporation performance of Zr‐MOF/poly(vinyl alcohol) mixed matrix membranes

Adjustable pervaporation performance of Zr‐MOF/poly(vinyl alcohol) mixed matrix membranes

Asymmetric Membranes Based on Copolyheteroarylenes with Imide, Biquinoline, and Oxazinone Units: Formation and Characterization

A review on metal organic frameworks (MOFs) modified membrane for remediation of water pollution

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