Hyper-branched dendritic structure modified PVDF electrospun membranes for air gap membrane distillation

Kebria, Mohammad Reza Shirzad; Rahimpour, Ahmad; Salestan, Saeed Khoshhal; Seyedpour, S. Fatemeh; Jafari, Arman; Banisheykholeslami, Fatemeh; Kiadeh, Naser Tavajohi Hassan

doi:10.1016/j.desal.2019.114307

Cited by 31 publications

(13 citation statements)

References 41 publications

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“…Although PVDF has been widely used as hydrophobic substrate for MD process, it can be modified to become hydrophilic or superhydrophilic substrate. In other words, its useful properties can be used in other side of technology to have high water wettability characteristics [24,[83][84][85][86]. In a study, Zhou et al fabricated a Janus membrane by changing a hydrophobic PVDF membrane to superhydrophilic membrane by initiation of vinyltriethoxysilane cross-linking reaction that converted it into a superhydrophilic PVDF substrate.…”

Section: Multi-step Coating Methodsmentioning

confidence: 99%

Janus membranes for membrane distillation: Recent advances and challenges

Afsari

Shon

Tijing

2021

Advances in Colloid and Interface Science

101

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Membrane distillation (MD) is a promising hybrid thermal-membrane separation technology that can efficiently produce freshwater from seawater or contaminated wastewater.However, the relatively low flux and the presence of fouling or wetting agents in feed solution negate the applicability of MD for long term operation. In recent years, 'two-faced' membranes or Janus membranes have shown promising potential to decrease wetting and fouling problem of common MD system as well as enhance the flux performance. In this review, a comprehensive study was performed to investigate the various fabrication, modification, and novel design processes to prepare Janus membranes and discuss their performance in desalination and wastewater treatment utilizing MD. The promising potential, challenges and future prospects relating to the design and use of Janus membranes for MD are also tackled in this review.

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Section: Multi-step Coating Methodsmentioning

confidence: 99%

Janus membranes for membrane distillation: Recent advances and challenges

Afsari

Shon

Tijing

2021

Advances in Colloid and Interface Science

101

View full text Add to dashboard Cite

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“…Polymer membranes obtained by electrospinning have a high surface area to pore volume ratio [ 102 ]. Electrospun membranes have been prepared from various polymers, including PVDF [ 103 , 104 , 105 ], PVDF–SiO2 [ 106 ], polystyrene (PS) [ 107 ], PTFE–polyvinyl acetate [ 108 ] and PVDF–HFP/SiNP [ 109 ]. It should be noted that electrospun membranes, as some of the most popular membranes, have been tested in all types of configurations.…”

Section: Membranes For MDmentioning

confidence: 99%

“…Kebria [ 104 ] and others proposed a method for increasing the hydrophobicity of nanofiber PVDF membranes by introducing dendritic structures during electrospinning. Dendritic structures were synthesized by polycondensation between the hydroxyl groups of boehmite and the carboxyl groups of nitriloacetic acid.…”

Section: Membranes For MDmentioning

confidence: 99%

Recent Progress in the Membrane Distillation and Impact of Track-Etched Membranes

et al. 2021

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Membrane distillation (MD) is a rapidly developing field of research and finds applications in desalination of water, purification from nonvolatile substances, and concentration of various solutions. This review presents data from recent studies on the MD process, MD configuration, the type of membranes and membrane hydrophobization. Particular importance has been placed on the methods of hydrophobization and the use of track-etched membranes (TeMs) in the MD process. Hydrophobic TeMs based on poly(ethylene terephthalate) (PET), poly(vinylidene fluoride) (PVDF) and polycarbonate (PC) have been applied in the purification of water from salts and pesticides, as well as in the concentration of low-level liquid radioactive waste (LLLRW). Such membranes are characterized by a narrow pore size distribution, precise values of the number of pores per unit area and narrow thickness. These properties of membranes allow them to be used for more accurate water purification and as model membranes used to test theoretical models (for instance LEP prediction).

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“…The results showed that compared to single PVDF–HFP/CNT layer nanofiber membrane, the DCMD performance has enhanced due to the porous middle layer [ 86 ]. Shirzad Kebria et al [ 87 ] fabricated a hydrophobic electrospun nanofiber membrane produced from polycondensation reaction of hydroxyl groups and carboxyl groups of boehmite and nitrilotriacetic for air gap MD (AGMD) application. The modified electrospun composite nanofiber membrane increased water contact angle from 129 to 139° with water flux of 11 kg/m 2 ·h and 99.9% salt rejection after a 15 h AGMD test [ 87 ].…”

Section: Applications Of Electrospun Nanofiber Compositesmentioning

confidence: 99%

“…Shirzad Kebria et al [ 87 ] fabricated a hydrophobic electrospun nanofiber membrane produced from polycondensation reaction of hydroxyl groups and carboxyl groups of boehmite and nitrilotriacetic for air gap MD (AGMD) application. The modified electrospun composite nanofiber membrane increased water contact angle from 129 to 139° with water flux of 11 kg/m 2 ·h and 99.9% salt rejection after a 15 h AGMD test [ 87 ]. Wang et al [ 88 ] reported a two-layer PEI/PVDF membrane using the electrospinning method to produce an anti-oil-fouling membrane for the MD process.…”

Section: Applications Of Electrospun Nanofiber Compositesmentioning

confidence: 99%

Progress on the Fabrication and Application of Electrospun Nanofiber Composites

et al. 2020

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Nanofibers are one of the most attractive materials in various applications due to their unique properties and promising characteristics for the next generation of materials in the fields of energy, environment, and health. Among the many fabrication methods, electrospinning is one of the most efficient technologies which has brought about remarkable progress in the fabrication of nanofibers with high surface area, high aspect ratio, and porosity features. However, neat nanofibers generally have low mechanical strength, thermal instability, and limited functionalities. Therefore, composite and modified structures of electrospun nanofibers have been developed to improve the advantages of nanofibers and overcome their drawbacks. The combination of electrospinning technology and high-quality nanomaterials via materials science advances as well as new modification techniques have led to the fabrication of composite and modified nanofibers with desired properties for different applications. In this review, we present the recent progress on the fabrication and applications of electrospun nanofiber composites to sketch a progress line for advancements in various categories. Firstly, the different methods for fabrication of composite and modified nanofibers have been investigated. Then, the current innovations of composite nanofibers in environmental, healthcare, and energy fields have been described, and the improvements in each field are explained in detail. The continued growth of composite and modified nanofiber technology reveals its versatile properties that offer alternatives for many of current industrial and domestic issues and applications.

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Hyper-branched dendritic structure modified PVDF electrospun membranes for air gap membrane distillation

Cited by 31 publications

References 41 publications

Janus membranes for membrane distillation: Recent advances and challenges

Janus membranes for membrane distillation: Recent advances and challenges

Recent Progress in the Membrane Distillation and Impact of Track-Etched Membranes

Progress on the Fabrication and Application of Electrospun Nanofiber Composites

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