A de novo sacrificial-MOF strategy to construct enhanced-flux nanofiltration membranes for efficient dye removal

Yang, Fan; Sadam, Hussain; Zhang, Yanqiu; Xia, Jianzhong; Yang, Xiaobin; Long, Jun; Li, Songwei; Shao, Lu

doi:10.1016/j.ces.2020.115845

Cited by 112 publications

(30 citation statements)

References 45 publications

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“…Recently, polymer membranes are being used widely and commonly due to their uses in many industries such as desalination, 1 oily wastewater treatment, 2,3 industrial waste water, 4 dairy industries, 5‐7 transportation industries, 8 dye removal 9 and biotechnology 10 . Moreover, their fabrication and their flexibility are easier than ceramic membranes 11 …”

Section: Introductionmentioning

confidence: 99%

“…Yang et al 9 designed a new metal organic framework sacrificial strategy to synthesize anefficient dye removal nanofiltration membrane, which is highly selective. In their work Gallic Acid/sZIF‐67/pristine polypyrrole composite nanofiltration membrane demonstrated 99.19% rejection along with a permeance of 12.57 L h −1 m −2 bar −1 for 500 ppm Congo Red dye solution.…”

Section: Introductionmentioning

confidence: 99%

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Manipulating of polyacrylonitrile membrane porosity via SiO₂ and TiO₂ nanoparticles: Thermodynamic and experimental point of view

Hamta

Ashtiani

Karimi

et al. 2020

Polymers for Advanced Techs

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In this work, the membrane formation of the polyacrylonitrile (PAN) was investigated in the presence of different solvents named N‐methyl‐2‐pyrrolidone (NMP) and dimethylformamide (DMF). In this way, two ternary systems water/NMP/PAN and water/DMF/PAN were studied and compared both experimentally and thermodynamically. According to the binodal data, changing the solvent from NMP to DMF could expand the two‐phase region, which was proved by Hansen solubility parameters. The binodal data were predicted and the results showed that the Flory‐Huggins results are in good agreement with experimental data with less than 2% deviation, which is important to have a rational design of porous membrane and appropriate prediction of its morphology. Furthermore, the effects of TiO2 and SiO2 nanoparticles were investigated on dope solution viscosity, thickness, porosity and contact angle of the membranes in both solvents. The results showed that the pattern of changes in characteristics was similar using each nanoparticle. Lower concentrations of nanoparticles enhance the porosity of the membranes and above the optimum amount, adding the NPs leads to decrement the porosity of the nanocomposite membranes. Finally, the fluxes of the manufactured membranes in both cases were examined using distilled water or oil‐in‐water emulsion as feed. The initial permeate flux of oil‐in‐water emulsion was increased from 62 to 73 L m−2 hr−1 using the membrane fabricated by DMF instead of NMP and this fact showed that the PAN membranes potentially can be used for oil/water separation due to the low fouling and hence, the low flux drop during the time.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Manipulating of polyacrylonitrile membrane porosity via SiO₂ and TiO₂ nanoparticles: Thermodynamic and experimental point of view

Hamta

Ashtiani

Karimi

et al. 2020

Polymers for Advanced Techs

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“…According to the results, the PAN/40%PANI@40°C membrane had a very low flux loss after 15 cycles, indicating its excellent anti‐fouling and performance in similar applications. The membrane surface hydrophilicity has a remarkable effect on permeability and anti‐fouling capability 63 . Therefore, the superhydrophilic surface of PAN/40%PANI@40°C could adsorbs water molecules and forms a water layer, which prevents from the adsorption of oils.…”

Section: Resultsmentioning

confidence: 99%

Development of a superhydrophilic nanofiber membrane for oil/water emulsion separation via modification of polyacrylonitrile/polyaniline composite

Shakiba

Nabavi

Emadi

et al. 2020

Polymers for Advanced Techs

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In this research, polyaniline (PANI) was used to modify polyacrylonitrile (PAN) electrospun nanofibers for separating oil/water (O/W) emulsions due to its hydrophilic amino groups and simple synthesis. The fabrication of PAN/PANI membranes was carried out by two different methods: blending of PANI with PAN in pre‐electrospinning solution and coating of PANI on the PAN electrospun nanofibers using in situ polymerization of aniline. The effect of PANI composition (10, 20, 30 and 40 wt% with respect to the weight of PAN) and electrospinning temperature (25°C, 40°C and 55°C) was investigated in PAN/PANI membrane fabrication. The prepared membranes were characterized by Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM), water and under water oil contact angle (WCA and UOCA) measurement and mechanical tensile test. Regarding the results, PAN/40%PANI nanofibers prepared at 40°C was considered as the superhydrophilic nanofibers (WCA < 5°) and the most suitable membrane among the samples for separation of O/W emulsions. Separation studies revealed a flux of 1300 Lmh (pure water) under gravity and an efficient oil rejection of about 98.8% for PAN/40%PANI@40°C membrane. Hence, the PAN/40%PANI@40°C membrane was subjected to additional tests including separation of different industrial oils, emulsion separation with surfactant agent, separation under harsh acidic/basic conditions and fouling test. The results confirmed an efficient performance of the obtained superhydrophilic membrane for O/W separation, which make it a potential candidate for the purification of water from industrial organic pollutant.

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“…Such changes in substratum surface properties may influence microfoulants adhesion in different ways. [ 41–43 ] Actually, many organic macromolecules have extensive hydrophobic domains in their structure, such as proteins. If the hydrophobic character predominates, then the molecule will be expelled from the bulk water phase and accumulate at solid–liquid interfaces.…”

Section: Biomimetic Antifouling Surface Technologiesmentioning

confidence: 99%

Recent Progress of Biomimetic Antifouling Surfaces in Marine

Yan

et al. 2020

Adv Materials Inter

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2000966 (4 of 18) www.advmatinterfaces.de Figure 9. a) Experimental results of biofilm streamers expanded rapidly and caused clogging over a short time. Reproduced with permission. [154] Copyright 2013, National Academy of Sciences. b) Under no-flow conditions, the bacteria exhibited circular swimming trajectories, and when the flow was changed to a moderate shear rates, the bacteria quickly aligned facing upstream and swimming toward upstream continuously. Reproduced with permission. [151] Copyright 2012, Biophysical Society. c) Kymograph of microscope images of an attached bacterium moving against flow, and conceptual illustration showing the changes in the structure of pili for uncoiling and the two regimes in bacterial retraction. Reproduced with permission. [152]

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A de novo sacrificial-MOF strategy to construct enhanced-flux nanofiltration membranes for efficient dye removal

Cited by 112 publications

References 45 publications

Manipulating of polyacrylonitrile membrane porosity via SiO₂ and TiO₂ nanoparticles: Thermodynamic and experimental point of view

Manipulating of polyacrylonitrile membrane porosity via SiO₂ and TiO₂ nanoparticles: Thermodynamic and experimental point of view

Development of a superhydrophilic nanofiber membrane for oil/water emulsion separation via modification of polyacrylonitrile/polyaniline composite

Recent Progress of Biomimetic Antifouling Surfaces in Marine

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A de novo sacrificial-MOF strategy to construct enhanced-flux nanofiltration membranes for efficient dye removal

Cited by 112 publications

References 45 publications

Manipulating of polyacrylonitrile membrane porosity via SiO2 and TiO2 nanoparticles: Thermodynamic and experimental point of view

Manipulating of polyacrylonitrile membrane porosity via SiO2 and TiO2 nanoparticles: Thermodynamic and experimental point of view

Development of a superhydrophilic nanofiber membrane for oil/water emulsion separation via modification of polyacrylonitrile/polyaniline composite

Recent Progress of Biomimetic Antifouling Surfaces in Marine

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Manipulating of polyacrylonitrile membrane porosity via SiO₂ and TiO₂ nanoparticles: Thermodynamic and experimental point of view

Manipulating of polyacrylonitrile membrane porosity via SiO₂ and TiO₂ nanoparticles: Thermodynamic and experimental point of view