Chitosan/polyvinylpyrrolidone/polyvinyl alcohol/carbon nanotubes dual layers nanofibrous membrane constructed by electrospinning-electrospray for water purification

Wu, Shuping; Li, Kanghui; Shi, Weijian; Cai, Jiawei

doi:10.1016/j.carbpol.2022.119756

Cited by 57 publications

(24 citation statements)

References 60 publications

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“…Incorporation of CNTs in the polymer matrices leads to better thermal, mechanical, electrical, and rheological properties, even at low concentrations [ 213 , 215 , 216 ]. However, CNTs usually aggregate together because of van der Waals interactions, thus the efficient fabrication of these matrices is critical in order to optimize the performance of these nanocomposites [ 217 ]. Shawky et al synthesized nanocomposite membranes by grafting a PA substrate with multiwalled carbon nanotubes (MWCNTs).…”

Section: Incorporation Of Nps In Tfncs/mmmsmentioning

confidence: 99%

“…Optimized UF thin-film membranes exhibited a water flux of 1533.26

, which is comparable to commercial PVDF UF membranes. These membranes also achieved excellent dye rejection (malachite green (MG), 87.20%; MB, 76.33%; CV, 63.39%) and heavy metal removal (Cu 2+ , 95.68%; Ni 2+ , 93.86%; Cd 2+ , 88.52%; Pb 2+ , 80.41%), in addition to having enhanced antifouling properties [ 217 ].…”

Section: Incorporation Of Nps In Tfncs/mmmsmentioning

confidence: 99%

“…CS has a similar structure to cellulose, with C-2 acetamido groups and amine groups replacing the C-2 secondary hydroxyl groups. This allows for an abundance of amino and hydroxy groups, which can chelate with positively charged metal ions, cationic molecules, and negatively charged metal oxyacid ions via electrostatic interactions; therefore, it is widely used in heavy metal removal [ 217 , 348 , 349 , 350 ]. CS has been employed in various forms for water treatment, such as NPs [ 351 ], fibers [ 352 ], coatings [ 353 ], flakes [ 354 ], nanorods [ 355 ], membranes [ 356 ], and hydrogels [ 357 ], among others.…”

Section: Incorporation Of Nps In Tfncs/mmmsmentioning

confidence: 99%

“…Wu et al fabricated an electrospun porous support layer of CS/PVP/PVA, on which an active layer coating of SWCNT/CS/PVP was performed using the electrospray method, and was finally crosslinked by glutaraldehyde vapors. Optimized UF thin-film membranes exhibited a water flux of 1533.26

comparable to a commercial PVDF UF membrane, a high dye rejection (MG, 87.20%; MB, 76.33%; CV, 63.39%), heavy metal removal (Cu 2+ , 95.68%; Ni 2+ , 93.86%; Cd 2+ , 88.52 %; Pb 2+ , 80.41%), and enhanced antifouling properties [ 217 ]. Montaser et al developed antimicrobial activity in CS by reacting CS with salicylaldehyde as a crosslinker using Schiff base reaction which resulted in salicylimine-functionalized CS that formed a metal complex with TiO 2 NPs to form the nanocomposite membrane.…”

Section: Incorporation Of Nps In Tfncs/mmmsmentioning

confidence: 99%

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Advanced Polymeric Nanocomposite Membranes for Water and Wastewater Treatment: A Comprehensive Review

Sahu¹,

Dosi

Kwiatkowski

et al. 2023

Polymers

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Nanomaterials have been extensively used in polymer nanocomposite membranes due to the inclusion of unique features that enhance water and wastewater treatment performance. Compared to the pristine membranes, the incorporation of nanomodifiers not only improves membrane performance (water permeability, salt rejection, contaminant removal, selectivity), but also the intrinsic properties (hydrophilicity, porosity, antifouling properties, antimicrobial properties, mechanical, thermal, and chemical stability) of these membranes. This review focuses on applications of different types of nanomaterials: zero-dimensional (metal/metal oxide nanoparticles), one-dimensional (carbon nanotubes), two-dimensional (graphene and associated structures), and three-dimensional (zeolites and associated frameworks) nanomaterials combined with polymers towards novel polymeric nanocomposites for water and wastewater treatment applications. This review will show that combinations of nanomaterials and polymers impart enhanced features into the pristine membrane; however, the underlying issues associated with the modification processes and environmental impact of these membranes are less obvious. This review also highlights the utility of computational methods toward understanding the structural and functional properties of the membranes. Here, we highlight the fabrication methods, advantages, challenges, environmental impact, and future scope of these advanced polymeric nanocomposite membrane based systems for water and wastewater treatment applications.

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Section: Incorporation Of Nps In Tfncs/mmmsmentioning

confidence: 99%

“…Optimized UF thin-film membranes exhibited a water flux of 1533.26

Section: Incorporation Of Nps In Tfncs/mmmsmentioning

confidence: 99%

Section: Incorporation Of Nps In Tfncs/mmmsmentioning

confidence: 99%

Section: Incorporation Of Nps In Tfncs/mmmsmentioning

confidence: 99%

See 2 more Smart Citations

Advanced Polymeric Nanocomposite Membranes for Water and Wastewater Treatment: A Comprehensive Review

Sahu¹,

Dosi

Kwiatkowski

et al. 2023

Polymers

View full text Add to dashboard Cite

show abstract

“…However, electrospinning has been used to obtain fibers with submicrometric to nanometric diameters. 25,27 This technique has produced membranes capable of removing large amounts of dyes, metals, 28,29 and bisphenol A from water, 28 in addition to filtering oil/water emulsions. 30,31 Although the data presented in the literature show these membranes' tendency to remove satisfactory amounts of EDC from the water, there is a lack of information on the application of membrane electrospun in filtration and SME techniques for environmental contaminants.…”

Section: Introductionmentioning

confidence: 99%

Electrospun polymeric membranes: Potential removal of endocrine disrupting compounds using solid membrane extraction and filtration processes

Nectoux

Medeiros

Leão

et al. 2022

J of Applied Polymer Sci

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The present study aims to prepare polymeric membranes by electrospinning to apply in the removal of estrone (E1), 17β‐estradiol (E2), and 17α‐ethinylestradiol (EE2) in aqueous samples. Polymeric membranes of polyamide‐6 (PA6), polycaprolactone (PCL), polylactic acid (PLA), and poly (butylene adipate‐co‐terephthalate) (PBAT) were obtained, characterized, and tested as sorbent material in processes of solid membrane extraction (SME) and membrane filtration. The efficiencies of the membranes after washing and/or conditioning processes were compared. The characterizations showed membranes with nanometer‐diameter threads (between 250 and 1200 nm, on average). The four membranes' morphology, chemical composition, and thermal stability were like previous works. PBAT membranes were considered the most effective SME technique as a differential, with 44%–71% removal. For the membrane filtration process, the highest removal values were obtained for the PBAT membrane (82%–91%), which was also efficient in filtering a surface water sample from River Guaíba. PBAT polymeric membrane effectively removes and recovers the studied hormones, lowering production costs and allowing internal and external modifications. These aspects demonstrate that the obtained membranes offer an efficient material in extracting E1, E2, and EE2, of high simplicity, low cost, and green chemistry.

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One‐Step Fabrication of Nanofiber/Nanosphere Composite Membranes by Airflow/Electrostatic Method

Zheng,

Zhang,

Liu

2024

Adv Eng Mater

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A fabrication technology and equipment for nanofiber/nanosphere composite membranes (NNCMs) is proposed and named as the airflow/electrostatic method (AEM). AEM uses both air flow and induced electric field to stretch the jets. The AEM working mechanisms are proposed and verified. The electric field laws of AEM are obtained by finite‐element simulation and theoretical deduction. Compared with the airflow method (AM), the average fiber diameter, standard deviation of fiber diameter, and NNCMs, porosity of AEM can be reduced by 38.8%, 71.1%, and 87.3%, respectively. AEM can also overcome the shortcoming of the AM that cannot receive nanospheres. Compared with the electrostatic method (EM), AEM can not only fabricate NNCMs with randomly distributed nanofibers and nanospheres in one step, but also greatly improve the yield. The injection speeds of solution X and solution Y of AEM can be increased by 24 000% and 1920%, respectively, compared with that of EM. The diameters of AEM nanospheres and nanofibers increase with the increase of injection speed of solution X and solution Y, respectively. The distance between needle and receiver has little effect on the diameters of nanofibers and nanospheres. AEM NNCMs with excellent quality and high yield will be widely used in many fields.

show abstract

Chitosan/polyvinylpyrrolidone/polyvinyl alcohol/carbon nanotubes dual layers nanofibrous membrane constructed by electrospinning-electrospray for water purification

Cited by 57 publications

References 60 publications

Advanced Polymeric Nanocomposite Membranes for Water and Wastewater Treatment: A Comprehensive Review

Advanced Polymeric Nanocomposite Membranes for Water and Wastewater Treatment: A Comprehensive Review

Electrospun polymeric membranes: Potential removal of endocrine disrupting compounds using solid membrane extraction and filtration processes

One‐Step Fabrication of Nanofiber/Nanosphere Composite Membranes by Airflow/Electrostatic Method

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