Electrospun nanofiber affinity membranes for water treatment applications: A review

HMTShirazi, Romina; Mohammadi, Toraj; Asadi, Amir; Tofighy, Maryam Ahmadzadeh

doi:10.1016/j.jwpe.2022.102795

Cited by 39 publications

(14 citation statements)

References 185 publications

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“…These novel chitosan-based nanomaterials have been shown to effectively remove a range of pollutants from wastewater to permissible levels [95]. Other biobased polymer and polymeric support includes porous resins, polyaniline, polyacrylamides, cellulose acetate, cellulose or carboxymethyl cellulose, chitosan, alginate, eggshells, nanofibers and cellulose nanofillers (CNFs) [19,96]. CNFs potentially hold an important role in the advancement of the development of polymer nanocomposites.…”

Section: Polymeric Membrane and Biopolymersmentioning

confidence: 99%

“…Molecular sieving and filtration rejects any solutes larger than the membrane's pore size when water-containing solutes come into contact with the active layer of the membrane (Figure 8). Smaller solutes will pass through the active layer and into the support layer, which acts as an adsorption microsphere [19,102]. These solutes then react/bind to form a tight internal spherical complex, resulting in filtered water permeating from the adsorptive membrane that meets the requisite standards [103].…”

Section: Polymeric Membrane and Biopolymersmentioning

confidence: 99%

“…Polymer nanocomposites possess unique synergistic features that are not possible to achieve with individual components functioning alone [17]. Inorganic nanofillers such as nanoclays, metal-oxide nanoparticles, carbon nanomaterials, and metal nanoparticles, can be introduced into a polymer matrix to create a PNC with better properties for a specific application [18,19]. Polymer nanocomposites have gained scientific prominence due to their broad range of applications in environmental remediation and treating various environmental challenges [16,20].…”

Section: Introductionmentioning

confidence: 99%

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Advanced Polymeric Nanocomposites for Water Treatment Applications: A Holistic Perspective

Adeola

Nomngongo

2022

Polymers

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Water pollution remains one of the greatest challenges in the modern era, and water treatment strategies have continually been improved to meet the increasing demand for safe water. In the last few decades, tremendous research has been carried out toward developing selective and efficient polymeric adsorbents and membranes. However, developing non-toxic, biocompatible, cost-effective, and efficient polymeric nanocomposites is still being explored. In polymer nanocomposites, nanofillers and/or nanoparticles are dispersed in polymeric matrices such as dendrimer, cellulose, resins, etc., to improve their mechanical, thermophysical, and physicochemical properties. Several techniques can be used to develop polymer nanocomposites, and the most prevalent methods include mixing, melt-mixing, in-situ polymerization, electrospinning, and selective laser sintering techniques. Emerging technologies for polymer nanocomposite development include selective laser sintering and microwave-assisted techniques, proffering solutions to aggregation challenges and other morphological defects. Available and emerging techniques aim to produce efficient, durable, and cost-effective polymer nanocomposites with uniform dispersion and minimal defects. Polymer nanocomposites are utilized as filtering membranes and adsorbents to remove chemical contaminants from aqueous media. This study covers the synthesis and usage of various polymeric nanocomposites in water treatment, as well as the major criteria that influence their performance, and highlights challenges and considerations for future research.

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Section: Polymeric Membrane and Biopolymersmentioning

confidence: 99%

Section: Polymeric Membrane and Biopolymersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Advanced Polymeric Nanocomposites for Water Treatment Applications: A Holistic Perspective

Adeola

Nomngongo

2022

Polymers

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“…When a membrane’s functional portion has poor mechanical qualities or its dimensions prevent it from operating at high pressures, one approach is to support it on porous reinforcing substrates of appropriate mechanical stability, hence forming so-called composite membranes [ 7 ]. The mechanical behavior of the active layer of the composite, as the supported CNM is termed, as well as of the whole composite membrane, is of increased interest [ 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Nanomechanics of Ultrathin Carbon Nanomembranes

et al. 2023

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Ultrathin carbon nanomembranes (CNMs) are two−dimensional materials (2DM) of a few nm thickness with sub−nm intrinsic pores that mimic the biofiltration membranes found in nature. They enable highly selective, permeable, and energy−efficient water separation and can be produced at large scales on porous substrates with tuned properties. The present work reports the mechanical performance of such CNMs produced by p−nitrobiphenyl phosphonic acid (NBPS) or polyvinylbiphenyl (PVBP) and their composite membranes of microporous supporting substrates, which constitute indispensable information for ensuring their mechanical stability during operation. Measuring the nanomechanical properties of the ultrathin material was achieved by atomic force microscopy (AFM) on membranes both supported on flat substrates and suspended on patterned substrates (“composite membrane”). The AFM analysis showed that the CNMs presented Young’s modulus in the range of 2.5–8 GPa. The composite membranes’ responses were investigated by tensile testing in a micro−tensile stage as a function of substrate thickness and substrate pore density and diameter, which were found to affect the mechanical properties. Thermogravimetric analysis was used to investigate the thermal stability of composite membranes at high temperatures. The results revealed the structural integrity of CNMs, while critical parameters governing their mechanical response were identified and discussed.

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“…Desalination is an inevitable choice for solving the global freshwater scarcity crisis, which has been a hotspot of scientific research over recent years [ 1 , 2 , 3 ]. A number of techniques have been put into industrial application, such as multi-effect distillation, multi-stage flash, membrane distillation, reverse osmosis, nano/ultrafiltration, etc.…”

Section: Introductionmentioning

confidence: 99%

A Novel Dual-Ion Capacitive Deionization System Design with Ultrahigh Desalination Performance

et al. 2022

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Capacitive deionization is an emerging desalination technology with mild operation conditions and high energy efficiency. However, its application is limited due to the low deionization capacity of traditional capacitive electrodes. Herein, we report a novel dual-ion capacitive deionization system with a lithium-ion battery cathode LiMn2O4/C and a sodium-ion battery anode NaTi2(PO4)3/C. Lithium ions could enhance the charge transfer during CDI desalination, while NaTi2(PO4)3/C provided direct intercalation sites for sodium ions. The electrochemical capacities of the battery electrodes fitted well, which was favorable for the optimization of the desalination capacity. The low potential of the redox couple Ti3+/Ti4+ (−0.8 V versus Ag/AgCl) and intercalation/deintercalation behaviors of sodium ions that suppressed hydrogen evolution could enlarge the voltage window of the CDI process to 1.8 V. The novel CDI cell achieved an ultrahigh desalination capacity of 140.03 mg·g−1 at 1.8 V with an initial salinity of 20 mM, revealing a new direction for the CDI performance enhancement.

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Electrospun nanofiber affinity membranes for water treatment applications: A review

Cited by 39 publications

References 185 publications

Advanced Polymeric Nanocomposites for Water Treatment Applications: A Holistic Perspective

Advanced Polymeric Nanocomposites for Water Treatment Applications: A Holistic Perspective

Nanomechanics of Ultrathin Carbon Nanomembranes

A Novel Dual-Ion Capacitive Deionization System Design with Ultrahigh Desalination Performance

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