Composite PVDF ultrafiltration membrane tailored by sandwich-like GO@UiO-66 nanoparticles for breaking the trade-off between permeability and selectivity

Liang, Zihan; Wang, Jin; Zhang, Qingyun; Zhuang, Tao; Zhao, Chuanming; Fu, Yao; Zhang, Yaqing; Yang, Fan

doi:10.1016/j.seppur.2021.119308

Cited by 35 publications

(7 citation statements)

References 67 publications

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“…When a higher amount with 2 wt.% of Ag@FeBTC is added, however, the PWF is reduced to 144.3 L m −2 h −1 . The reason might be pore blockage caused by greater nanoparticle loadings, which corresponds to a reduction in membrane porosity or might be due to the partial dispersion of nanomaterial 38,39 . The existence of functional carboxylic acid groups (COOH) in Ag@FeBTC might be the reason for the increased hydrophilicity and hence PWF.…”

Section: Resultsmentioning

confidence: 99%

“…The reason might be pore blockage caused by greater nanoparticle loadings, which corresponds to a reduction in membrane porosity or might be due to the partial dispersion of nanomaterial. 38,39 The existence of functional carboxylic acid groups ( COOH) in Ag@FeBTC might be the reason for the increased hydrophilicity and hence PWF. Due to the improved membrane surface hydrophilicity and the presence of COOH functional groups, the PWF of PVDF/Ag@FeBTC-1.5 membrane is greater than that of PVDF membranes.…”

Section: Antifouling Abilitymentioning

confidence: 99%

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Highly hydrophilic and antifouling poly(vinylidene fluoride) hybrid ultrafiltration membranes incorporated with silver‐loaded iron‐based metal–organic frameworks

Rameesha,

Rana,

Nagendran

2023

J of Applied Polymer Sci

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Silver‐loaded iron‐based metal–organic frameworks (Ag@FeBTC) are synthesized and incorporated with poly (vinylidene fluoride) (PVDF) to make hybrid ultrafiltration (UF) membranes and are efficiently utilized to treat water containing macromolecular pollutants. The chemical functionality and semi‐amorphous nature of the Ag@FeBTC are validated by FT‐IR and XRD, respectively. The morphology and elemental composition of PVDF/Ag@FeBTC membranes are probed by SEM and EDX mapping. The creation of pores is visibly seen in cross‐sectional SEM images and the improvement in roughness is noticed in AFM images. Because of the improved hydrophilicity of Ag@FeBTC on the PVDF membrane matrix, the contact angle is reduced to 33.9°. The excellent dispersion of Ag@FeBTC on the PVDF membrane matrix is observed through elemental mapping. The PVDF/Ag@FeBTC hybrid membranes exhibited higher pure water flux (160 L m−2 h−1) and greater than 90% rejection as well as flux recovery ratio for foulant removal (BSA and HA). The antimicrobial property of PVDF/Ag@FeBTC hybrid membranes is probed using a zone of inhibition test against E. coli and S. aureus, and the results revealed that the hybrid membranes possess superior antibacterial behavior. The long‐term stability of MOF in hybrid membranes is confirmed by AAS. Overall characterization and performance results of the hybrid PVDF/Ag@FeBTC UF membrane clearly demonstrated its potential use for water treatment applications.

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Section: Resultsmentioning

confidence: 99%

Section: Antifouling Abilitymentioning

confidence: 99%

Highly hydrophilic and antifouling poly(vinylidene fluoride) hybrid ultrafiltration membranes incorporated with silver‐loaded iron‐based metal–organic frameworks

Rameesha,

Rana,

Nagendran

2023

J of Applied Polymer Sci

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“…The permeability-selectivity trade-off relationship is the important property in enhanced UF membranes preparation. 173 Permeability is an important parameter of UF membranes that affects the selection of transmembrane pressure, purification efficiency, and operation cost. As a pressure-driven membrane process, the permeability increase is directly determined by the transmembrane operating pressure, which is described by eq 1: 174…”

Section: Permeability-selectivitymentioning

confidence: 99%

“…The permeability-selectivity trade-off relationship is the important property in enhanced UF membranes preparation . Permeability is an important parameter of UF membranes that affects the selection of transmembrane pressure, purification efficiency, and operation cost.…”

Section: Main Challenges Of Uf On Ion Removalmentioning

confidence: 99%

Progress of Ultrafiltration-Based Technology in Ion Removal and Recovery: Enhanced Membranes and Integrated Processes

et al. 2023

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Toxic ions from industrial wastewater entail important challenges to the environment. Ultrafiltration (UF) with low operation pressure and high permeability has been widely used for macromolecules and suspended solids separation. However, UF cannot be directly used to separate ions from wastewater due to the large pore size of UF membranes. Recently, the design of enhanced UF membrane structures and UF-based integrated processes expands the application of UF for ion removal. This review aims to summarize the latest developments of UF membranes preparation as well as integrated UF processes in ion removal. First, the advanced materials for UF membranes preparation are discussed, with specific attention on active nanomaterials including inorganic materials, organic materials, and biomaterial-based materials. The design principles such as pore size control and composite thin layer fabrication of enhanced UF-based membranes for ion removal are illustrated. Next, integrated processes such as micellar-enhanced UF, polymer-enhanced UF, electro-driven UF, and other UF-based combined processes are reviewed. Finally, current application limitations and future perspectives in the enhanced UF membrane for ion removal are discussed. This review presents potential approaches for the preparation and application of enhanced UF membranes in sustainable ion removal from wastewaters.

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“…However, there is a need to tailor the membrane surface due to limits such as selectivity and permeability trade-offs and high-pressure requirements. [39][40][41][42] A literature survey revealed no focused review based on surface modifications for UF and NF membranes for the selective removal of groundwater-contaminating heavy metals and inorganic contaminants. However, few reviews focus on improving the permeability and fouling resistance of membranes and improving the salt rejection capabilities of NF and RO membranes.…”

Section: Introductionmentioning

confidence: 99%

Surface-modified ultrafiltration and nanofiltration membranes for the selective removal of heavy metals and inorganic groundwater contaminants: a review

Koli,

Singh

2023

Environ. Sci.: Water Res. Technol.

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Composite PVDF ultrafiltration membrane tailored by sandwich-like GO@UiO-66 nanoparticles for breaking the trade-off between permeability and selectivity

Cited by 35 publications

References 67 publications

Highly hydrophilic and antifouling poly(vinylidene fluoride) hybrid ultrafiltration membranes incorporated with silver‐loaded iron‐based metal–organic frameworks

Highly hydrophilic and antifouling poly(vinylidene fluoride) hybrid ultrafiltration membranes incorporated with silver‐loaded iron‐based metal–organic frameworks

Progress of Ultrafiltration-Based Technology in Ion Removal and Recovery: Enhanced Membranes and Integrated Processes

Surface-modified ultrafiltration and nanofiltration membranes for the selective removal of heavy metals and inorganic groundwater contaminants: a review

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