Electrospun nanomembranes at the liquid–liquid and solid–liquid interface - a review

Osali, Soheila; Ghiyasi, Yasaman; Esfahani, Hamid; Jose, Rajan; Ramakrishna, Seeram

doi:10.1016/j.mattod.2023.05.005

Cited by 17 publications

(2 citation statements)

References 267 publications

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“…Electrospun nanofiber technology involves spinning a casting solution under high voltage to prepare fibrous membranes. These membranes contain nanofibers with diameters ranging from 10 to 100 nm, demonstrating high porosity, large surface area, tunable pore size, and adjustable surface functionalities. , Since COFs are not inherently soluble in common solvents, the preparation of pure electrospun COF-based nanofibrous membranes remains challenging. Nevertheless, Yan et al successfully developed an electrospun nanofibrous membrane by suspending SNW-1 COF powders at different concentrations (5%, 10%, and 20%) in a PAN matrix .…”

Section: Evaluating the Processability Of Cofs Into Membranesmentioning

confidence: 99%

Covalent Organic Framework Membranes and Water Treatment

Asif,

Kim,

Nguyen

et al. 2024

J. Am. Chem. Soc.

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Covalent organic frameworks (COFs) are an emerging class of highly porous crystalline organic polymers comprised entirely of organic linkers connected by strong covalent bonds. Due to their excellent physicochemical properties (e.g., ordered structure, porosity, and stability), COFs are considered ideal materials for developing state-of-the-art separation membranes. In fact, significant advances have been made in the last six years regarding the fabrication and functionalization of COF membranes. In particular, COFs have been utilized to obtain thin-film, composite, and mixed matrix membranes that could achieve effective rejection (mostly above 80%) of organic dyes and model organic foulants (e.g., humic acid). COF-based membranes, especially those prepared by embedding into polyamide thin-films, obtained adequate rejection of salts in desalination applications. However, the claims of ordered structure and separation mechanisms remain unclear and debatable. In this perspective, we analyze critically the design and exploitation of COFs for membrane fabrication and their performance in water treatment applications. In addition, technological challenges associated with COF properties, fabrication methods, and treatment efficacy are highlighted to redirect future research efforts in realizing highly selective separation membranes for scale-up and industrial applications.

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Section: Evaluating the Processability Of Cofs Into Membranesmentioning

confidence: 99%

Covalent Organic Framework Membranes and Water Treatment

Asif,

Kim,

Nguyen

et al. 2024

J. Am. Chem. Soc.

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“…Electrospinning is a versatile and adaptable method, allowing the creation of materials and composites with nanometer diameters and a fibrous microstructure. 8 In the food and beverage industry, among the various nanomaterial fabrication approaches, electrospraying and electrospinning technologies have gained prominent research interest due to their cost effectiveness and scability. 9 Electrospinning, an electrohydrodynamic technique, uses electromechanical forces to create nanofibers.…”

Section: ■ Introductionmentioning

confidence: 99%

Emerging Applications of Electrospun Nanofiber Membranes for Liquid Foods

Prakash,

Yoha,

Leena Michael

et al. 2024

ACS Food Sci. Technol.

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Among various nanotechnology-linked concepts, given its unique capabilities, electrospinning has gained diverse applications in the food industry. As an electrohydrodynamic process, electrospinning has the unmatched ability to conveniently spin fibers using a range of materials, with diameters in the nano range. This explains a significant improvement in surface area to volume ratio and, accordingly, the prominent changes in functionality. This review focuses on electrospun nanomembranes for applications involving water, beverages, and other liquid foods. The fundamental concepts and background of the fabrication processes of electrospun nanofiber membranes, material selection, and various factors influencing the electrospinning process are summarized. Then, emerging applications are detailed, presenting key findings from recent studies demonstrating electrospun membranes' performance and merits. Particularly, these are performed in comparison with conventional membranes. While a lot of advancements have happened, limitations exist, and the concluding sections present such concerns, highlighting the way forward for future research. Over the past few decades, many bottlenecks have been addressed, and technology is finding broader prospects for commercial-scale application.

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A New Single‐Electrode Generator for Water Droplet Energy Harvesting with A 3 mA Current Output

Meng,

Zhang,

Liu

et al. 2023

Advanced Energy Materials

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Triboelectric nanogenerators (TENGs) based on water droplets can harvest water kinetic energy using triboelectrification and electrostatic induction mechanisms. However, the development of traditional liquid–solid TENGs (L–S TENGs) is severely limited due to their low‐performance output and high device encapsulation requirements for preparation technology. In this work, a single‐electrode mode droplet‐based TENG (D‐TENG) is devised to effectively harvest water kinetic energy by optimizing the interface contact behavior of droplets, increasing the short‐circuit current (ISC) of one drop of water from microamperes to milliamperes levels. In the D‐TENG configuration, the electrode is positioned above the dielectric rather than at the bottom, allowing efficient utilization of generated friction charges and reducing the dissipation of these charges, thereby enhancing the output performance of the TENG. The influencing factors and operational mechanisms of D‐TENG are studied to obtain optimized working conditions to improve its output performance. Under optimal conditions, the D‐TENG can saturate the charge of the PTFE surface with only 8 droplets, achieving an ISC of up to 3.51 mA and an output voltage (VO) of 298.27 V. This work provides a convenient method for efficiently harvesting water kinetic energy based on interfacial behavior control.

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Electrospun nanomembranes at the liquid–liquid and solid–liquid interface - a review

Cited by 17 publications

References 267 publications

Covalent Organic Framework Membranes and Water Treatment

Covalent Organic Framework Membranes and Water Treatment

Emerging Applications of Electrospun Nanofiber Membranes for Liquid Foods

A New Single‐Electrode Generator for Water Droplet Energy Harvesting with A 3 mA Current Output

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