scholarly journals Electrospun Nanofibers for Chemical Separation

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 982 ◽  
Author(s):  
Mesbah Najafi ◽  
Margaret W. Frey
Keyword(s):  
Chemical Separation ◽  
Electrospun Nanofibers ◽  
Covalent Bonding ◽  
Food Science ◽  
High Porosity ◽  
Light Weight ◽  
Separation And Purification ◽  
Electrospun Nanofiber ◽  
Nanofiber Membranes ◽  
Magnetic Adsorption

The separation and purification of specific chemicals from a mixture have become necessities for many environments, including agriculture, food science, and pharmaceutical and biomedical industries. Electrospun nanofiber membranes are promising materials for the separation of various species such as particles, biomolecules, dyes, and metals from liquids because of the combined properties of a large specific surface, light weight, high porosity, good connectivity, and tunable wettability. This paper reviews the recent progress in the design and fabrication of electrospun nanofibers for chemical separation. Different capture mechanisms including electrostatic, affinity, covalent bonding, chelation, and magnetic adsorption are explained and their distinct characteristics are highlighted. Finally, the challenges and future aspects of nanofibers for membrane applications are discussed.

Electrospun PVDF/PMMA/SiO2 Membrane Separators for Rechargeable Lithium-Ion Batteries

2015 ◽  
Vol 645-646 ◽  
pp. 1201-1206 ◽  
Author(s):  
Xiao Lin Wu ◽  
Jie Lin ◽  
Jian Yan Wang ◽  
Hang Guo
Keyword(s):  
Vinylidene Fluoride ◽  
Lithium Ion ◽  
Electrospun Nanofibers ◽  
Solidification Process ◽  
High Porosity ◽  
Nanofiber Membrane ◽  
Discharge Performance ◽  
Inorganic Particles ◽  
Electrolyte Uptake ◽  
Nanofiber Membranes

In this paper composite nanofiber membranes were prepared by electrospinning technology from poly (vinylidene fluoride) (PVDF)-poly (methyl methacrylate) (PMMA)-SiO2blend solutions with different PMMA and SiO2contents. It was found that the diameter of electrospun nanofibers was greatly increased with the added PMMA content but decreased with the added SiO2content, and when both PMMA and SiO2were added the diameter of electrospun nanofibers was decreased. With a proper ratio of the PMMA and SiO2added, the electrospum nanofiber membrane could have a suitable diameter with high porosity. The XRD results revealed that electrospun nanofiber membranes contained mainly β-phase crystal structure of PVDF, and its crystalline is reduced with the added PMMA and SiO2contents due to the inhibited crystallization of the polymer by the inorganic particles and PMMA during the solidification process. These nanofiber membranes exhibited a high electrolyte uptake, around 300%. Moreover, the incorporation of PMMA and SiO2into the nanofiber membrane improved the ionic conductivity from 1.7×10−3S/cm to 2.0×10−3S/cm at room temperature. Compared with commercial film PE, their cell cycle and charge and discharge performance were also greatly improved.

Plasmonic silver nanoparticle-decorated electrospun nanofiber membrane for interfacial solar vapor generation

2021 ◽  
pp. 004051752110149
Author(s):  
Ye Liu ◽  
Jian Xiong ◽  
Ailin Li ◽  
Rongwu Wang ◽  
Liming Wang ◽  
...  
Keyword(s):  
Light Absorption ◽  
Research Work ◽  
Absorption Efficiency ◽  
High Porosity ◽  
Electrospun Nanofiber ◽  
Nanofiber Membrane ◽  
Vapor Generation ◽  
Ag Nps ◽  
Nanofiber Membranes ◽  
Pan Nanofiber

Interfacial solar vapor generation as an emerging technique has great potential in solving water shortage and pollution problems. Electrospun nanofiber membrane with high porosity, mechanical flexibility, numerous microsized channels for fast water transport, and low thermal conductivity offers an ideal platform for solar vapor generation. In this research work, plasmonic silver nanoparticles (Ag NPs) were utilized as photothermal materials and electrospun polyacrylonitrile (PAN) nanofiber membranes as substrates to fabricate Ag nanoparticles-uniformly decorated PAN (Ag@PAN) nanofiber membranes by electroless plating method. The morphology and chemical composition of the membranes were characterized by field emission scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffractometry. By varying the volume ratios of glucose and silver ammonia solution, the sizes of Ag NPs as well as the light-absorption ability of corresponding nanofiber membrane were regulated. As a result, the optimal Ag@PAN nanofiber membrane demonstrated a high light-absorption efficiency of 92.8% in the range of 280–2500 nm wavelength. The evaporation rate reached 1.34 kg m−2 h−1 and 5.83 kg m−2 h−1 under 1 sun and 5 sun irradiations, respectively. The plasmonic nanofiber membrane also exhibited long-term use stability, without any degradation in solar vapor generation performance even after 10 cycle tests. This work paves the way for the design and development of plasmonic nanofiber membranes as high-performance interfacial solar vapor generators.

Conducting and Biopolymer Based Electrospun Nanofiber Membranes for Wound Healing Applications

2016 ◽  
Vol 12 (2) ◽  
pp. 220-227 ◽  
Author(s):  
Mohammad R. Karim ◽  
Abdurahman Al-Ahmari ◽  
M.A. Dar ◽  
M.O. Aijaz ◽  
M.L. Mollah ◽  
...  
Keyword(s):  
Wound Healing ◽  
Electrospun Nanofiber ◽  
Nanofiber Membranes

scholarly journals Conformal Fabrication of an Electrospun Nanofiber Mat on a 3D Ear Cartilage-Shaped Hydrogel Collector Based on Hydrogel-Assisted Electrospinning

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Jin Yeong Song ◽  
Hyun Il Ryu ◽  
Jeong Myeong Lee ◽  
Seong Hwan Bae ◽  
Jae Woo Lee ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Electrospun Nanofibers ◽  
Cell Delivery ◽  
Complex Geometries ◽  
Two Dimensional ◽  
Uniform Thickness ◽  
Electrospun Nanofiber ◽  
Electrospinning Technique ◽  
Ear Cartilage ◽  
Focused Electric Field

AbstractElectrospinning is a common and versatile process to produce nanofibers and deposit them on a collector as a two-dimensional nanofiber mat or a three-dimensional (3D) macroscopic arrangement. However, 3D electroconductive collectors with complex geometries, including protruded, curved, and recessed regions, generally caused hampering of a conformal deposition and incomplete covering of electrospun nanofibers. In this study, we suggested a conformal fabrication of an electrospun nanofiber mat on a 3D ear cartilage-shaped hydrogel collector based on hydrogel-assisted electrospinning. To relieve the influence of the complex geometries, we flattened the protruded parts of the 3D ear cartilage-shaped hydrogel collector by exploiting the flexibility of the hydrogel. We found that the suggested fabrication technique could significantly decrease an unevenly focused electric field, caused by the complex geometries of the 3D collector, by alleviating the standard deviation by more than 70% through numerical simulation. Furthermore, it was experimentally confirmed that an electrospun nanofiber mat conformally covered the flattened hydrogel collector with a uniform thickness, which was not achieved with the original hydrogel collector. Given that this study established the conformal electrospinning technique on 3D electroconductive collectors, it will contribute to various studies related to electrospinning, including tissue engineering, drug/cell delivery, environmental filter, and clothing.

scholarly journals Electrospun Nanofibers for Sensing and Biosensing Applications—A Review

2021 ◽  
Vol 22 (12) ◽  
pp. 6357
Author(s):  
Kinga Halicka ◽  
Joanna Cabaj
Keyword(s):  
High Surface ◽  
High Surface Area ◽  
Toxic Metal ◽  
Volume Ratio ◽  
Electrospun Nanofibers ◽  
Clinical Diagnostics ◽  
Loading Capacity ◽  
Electrospun Nanofiber ◽  
Sensing Platforms ◽  
Different Types

Sensors and biosensors have found applications in many areas, e.g., in medicine and clinical diagnostics, or in environmental monitoring. To expand this field, nanotechnology has been employed in the construction of sensing platforms. Because of their properties, such as high surface area to volume ratio, nanofibers (NFs) have been studied and used to develop sensors with higher loading capacity, better sensitivity, and faster response time. They also allow to miniaturize designed platforms. One of the most commonly used techniques of the fabrication of NFs is electrospinning. Electrospun NFs can be used in different types of sensors and biosensors. This review presents recent studies concerning electrospun nanofiber-based electrochemical and optical sensing platforms for the detection of various medically and environmentally relevant compounds, including glucose, drugs, microorganisms, and toxic metal ions.

scholarly journals Multifunctional Fibroblasts Enhanced via Thermal and Freeze-Drying Post-treatments of Aligned Electrospun Nanofiber Membranes

2021 ◽  
Vol 3 (1) ◽  
pp. 26-37
Author(s):  
Ya Li ◽  
Qian Shen ◽  
Jing Shen ◽  
Xinbo Ding ◽  
Tao Liu ◽  
...  
Keyword(s):  
Freeze Drying ◽  
Electrospun Nanofiber ◽  
Nanofiber Membranes

AB2 Y-shaped miktoarm star conductive polyaniline-modified poly(ethylene glycol) and its electrospun nanofiber blend with poly(ε-caprolactone)

RSC Advances ◽  
2015 ◽  
Vol 5 (46) ◽  
pp. 36715-36726 ◽  
Author(s):  
Bakhshali Massoumi ◽  
Somayeh Davtalab ◽  
Mehdi Jaymand ◽  
Ali Akbar Entezami
Keyword(s):  
Ethylene Glycol ◽  
Electrospun Nanofibers ◽  
Synthesis And Characterization ◽  
Electrospun Nanofiber ◽  
Poly Ethylene Glycol ◽  
Conductive Polyaniline ◽  
Miktoarm Star ◽  
Poly Ethylene ◽  
Type Ab

The aim of this study is the synthesis, and characterization of novel type AB2 Y-shaped miktoarm star conductive polyaniline-modified poly(ethylene glycol), and preparation of its electrospun nanofibers blend with poly(ε-caprolactone).

scholarly journals Electrospun nanofiber membranes from polysulfones with chiral selector aimed for optical resolution

2012 ◽  
Vol 48 (10) ◽  
pp. 1717-1725 ◽  
Author(s):  
Hiroaki Mizushima ◽  
Masakazu Yoshikawa ◽  
Nanwen Li ◽  
Gilles P. Robertson ◽  
Michael D. Guiver
Keyword(s):  
Optical Resolution ◽  
Chiral Selector ◽  
Electrospun Nanofiber ◽  
Nanofiber Membranes
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