Sulfonated silica-based cation-exchange nanofiber membranes with superior self-cleaning abilities for electrochemical water treatment applications

Swanckaert, Bianca; Loccufier, Eva; Geltmeyer, Jozefien; Rabaey, Korneel; Buysser, Klaartje De; Bonin, Luiza; Clerck, Karen De

doi:10.1016/j.seppur.2022.123001

Cited by 10 publications

(5 citation statements)

References 85 publications

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“…As mentioned in the introduction, nanofiber membranes are dense and coherent structures. Yet, high porosity is present in these structures (>90%) [ 36 , 37 , 38 , 39 , 40 ]. Therefore, the use of membrane width and thickness will typically result in a very low estimate of the stress present in the membrane compared to traditional solid membranes.…”

Section: Methodsmentioning

confidence: 99%

Microscale and Macroscale Deformation Behavior of Electrospun Polymeric Nanofiber Membranes Using In Situ SEM during Mechanical Testing

et al. 2023

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Electrospun nanofiber membranes show high potential in various application fields (e.g., filtration, catalysis, and sensing). Nevertheless, knowledge of the mechanical behavior, and more specifically, the deformation of nanofiber membranes is still limited today which can complicate the appliance of nanofiber membranes in applications where they are mechanically loaded. In this paper, we, therefore, analyzed the mechanical behavior of polymeric nanofiber membranes with different fiber orientations (random and aligned) extensively. Polyamide 6 was used as a representative reference polymer for proof-of-concept. Mechanical tests show that all membranes have a coherent deformation behavior at the macroscale up to the point of fracture. Large variations in stiffness, ultimate strength, and ultimate strain were observed between membranes with different fiber orientations (Random: E-mod: 370 ± 34 MP; UTS: 38.5 ± 6.0 MPa; εmax: 30.0 ± 2.8%; Parallel aligned: E-mod: 753 ± 11 MPa; UTS: 55.4 ± 0.8 MPa; εmax: 12.0 ± 0.1%; Perpendicular aligned: E-mod: 24.1 ± 3.7 MPa; UTS:/; εmax: >40%). This shows the versatility and tunability of the mechanical behavior of these nanofiber membranes. At the microscale, the fibrous structure results in deformation mechanisms that resist failure formation and progression when the membrane is mechanically loaded. This results in a high fracture resistance, even for pre-damaged membranes. Realignment of the fibers along the loading direction causes crack tip blunting, locally reinforcing the membrane.

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Section: Methodsmentioning

confidence: 99%

Microscale and Macroscale Deformation Behavior of Electrospun Polymeric Nanofiber Membranes Using In Situ SEM during Mechanical Testing

et al. 2023

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“…Several technologies have been developed for water treatment, including wastewater purification and recycling, including precipitation [ 10 , 11 ], oxidation [ 12 ], membrane filtration [ 13 , 14 , 15 ], adsorption [ 16 , 17 , 18 , 19 , 20 , 21 , 22 ], biological treatments [ 23 , 24 , 25 ], advanced oxidation processes [ 26 , 27 , 28 , 29 , 30 , 31 , 32 ], etc. However, some of these technologies are expensive, complex, have high energy consumption, or even low efficiency.…”

Section: Introductionmentioning

confidence: 99%

Chitosan Hydrogels for Water Purification Applications

Chelu,

Musuc,

Popa

et al. 2023

Gels

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Chitosan-based hydrogels have gained significant attention for their potential applications in water treatment and purification due to their remarkable properties such as bioavailability, biocompatibility, biodegradability, environmental friendliness, high pollutants adsorption capacity, and water adsorption capacity. This article comprehensively reviews recent advances in chitosan-based hydrogel materials for water purification applications. The synthesis methods, structural properties, and water purification performance of chitosan-based hydrogels are critically analyzed. The incorporation of various nanomaterials into chitosan-based hydrogels, such as nanoparticles, graphene, and metal-organic frameworks, has been explored to enhance their performance. The mechanisms of water purification, including adsorption, filtration, and antimicrobial activity, are also discussed in detail. The potential of chitosan-based hydrogels for the removal of pollutants, such as heavy metals, organic contaminants, and microorganisms, from water sources is highlighted. Moreover, the challenges and future perspectives of chitosan-based hydrogels in water treatment and water purification applications are also illustrated. Overall, this article provides valuable insights into the current state of the art regarding chitosan-based hydrogels for water purification applications and highlights their potential for addressing global water pollution challenges.

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“…Inorganic nanofibers offer the advantages of a higher thermal and chemical resistance than most polymeric nanofibers [12]. Additionally, via the direct electrospinning of a sol-gel mixture, chemically tunable nanofibers can be produced, resulting in inorganic nanofiber membranes with a wide range of properties and a broad potential application field [15]- [17].…”

Section: Introductionmentioning

confidence: 99%

Chemical and structural induced ductile-to-brittle transition in electrospun silica nanofiber membranes

Swanckaert

Verschatse

Loccufier

et al. 2023

Ceramics International

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Sulfonated silica-based cation-exchange nanofiber membranes with superior self-cleaning abilities for electrochemical water treatment applications

Cited by 10 publications

References 85 publications

Microscale and Macroscale Deformation Behavior of Electrospun Polymeric Nanofiber Membranes Using In Situ SEM during Mechanical Testing

Microscale and Macroscale Deformation Behavior of Electrospun Polymeric Nanofiber Membranes Using In Situ SEM during Mechanical Testing

Chitosan Hydrogels for Water Purification Applications

Chemical and structural induced ductile-to-brittle transition in electrospun silica nanofiber membranes

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