Progresses on electrospun metal–organic frameworks nanofibers and their wastewater treatment applications

Liu, Yanan; Lv, He; Liu, Yang; Gao, Yiman; Kim, Hee Young; Ouyang, Yuanming; Yu, Deng‐Guang

doi:10.1016/j.mtchem.2022.100974

Cited by 38 publications

(28 citation statements)

References 178 publications

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“…After a certain time interval, 2 mL of solution was collected out of the flask to measure the RE component concentration. At the same time, 2 mL of deionized water was taken out of the standby flask and added into the test solution to keep the total volume of the test solution constant [ 59 , 60 , 61 , 62 ].…”

Section: Methodsmentioning

confidence: 99%

Electrospun Zein/Polyoxyethylene Core-Sheath Ultrathin Fibers and Their Antibacterial Food Packaging Applications

et al. 2022

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The purpose of this work is to develop a novel ultrathin fibrous membrane with a core-sheath structure as antibacterial food packaging film. Coaxial electrospinning was exploited to create the core-sheath structure, by which the delivery regulation of the active substance was achieved. Resveratrol (RE) and silver nanoparticles (AgNPs) were loaded into electrospun zein/polyethylene oxide ultrathin fibers to ensure a synergistic antibacterial performance. Under the assessments of a scanning electron microscope and transmission electron microscope, the ultrathin fiber was demonstrated to have a fine linear morphology, smooth surface and obvious core-sheath structure. X-ray diffraction and Fourier transform infrared analyses showed that RE and AgNPs coexisted in the ultrathin fibers and had good compatibility with the polymeric matrices. The water contact angle experiments were conducted to evaluate the hydrophilicity and hygroscopicity of the fibers. In vitro dissolution tests revealed that RE was released in a sustained manner. In the antibacterial experiments against Staphylococcus aureus and Escherichia coli, the diameters of the inhibition zone of the fiber were 8.89 ± 0.09 mm and 7.26 ± 0.10 mm, respectively. Finally, cherry tomatoes were selected as the packaging object and packed with fiber films. In a practical application, the fiber films effectively reduced the bacteria and decreased the quality loss of cherry tomatoes, thereby prolonging the fresh-keeping period of cherry tomatoes to 12 days. Following the protocols reported here, many new food packaging films can be similarly developed in the future.

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Section: Methodsmentioning

confidence: 99%

Electrospun Zein/Polyoxyethylene Core-Sheath Ultrathin Fibers and Their Antibacterial Food Packaging Applications

et al. 2022

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“…Thus, increasing the distance between drugs and release medium outside fibers could theoretically prolong drug release. Core–sheath fibers are common and effective materials for sustained-release drugs, in which the unique sheath layer could provide a barrier to prevent drugs from leaching the core [ 75 , 76 , 77 ]. Fortunately, the sheath thickness can be manipulated by adjusting the flow rate of the middle working fluid in modified triaxial electrospinning, as shown in Figure 8 C. The thick sheath of core–sheath fibers indicated long diffusion distance for drug and water molecules, which determined the sustained drug delivery.…”

Section: Resultsmentioning

confidence: 99%

Electrospun Core–Sheath Nanofibers with Variable Shell Thickness for Modifying Curcumin Release to Achieve a Better Antibacterial Performance

et al. 2022

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The inefficient use of water-insoluble drugs is a major challenge in drug delivery systems. Core–sheath fibers with various shell thicknesses based on cellulose acetate (CA) were prepared by the modified triaxial electrospinning for the controlled and sustained release of the water-insoluble Chinese herbal active ingredient curcumin. The superficial morphology and internal structure of core–sheath fibers were optimized by increasing the flow rate of the middle working fluid. Although the prepared fibers were hydrophobic initially, the core–sheath structure endowed fibers with better water retention property than monolithic fibers. Core–sheath fibers had flatter sustained-release profiles than monolithic fibers, especially for thick shell layers, which had almost zero-order release for almost 60 h. The shell thickness and sustained release of drugs brought about a good antibacterial effect to materials. The control of flow rate during fiber preparation is directly related to the shell thickness of core–sheath fibers, and the shell thickness directly affects the controlled release of drugs. The fiber preparation strategy for the precise control of core–sheath structure in this work has remarkable potential for modifying water-insoluble drug release and improving its antibacterial performance.

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“…From different standpoints, electrospinning technology has attracted extensive attention in the application of 1D nanomaterials. Different structural nanofibers, such as porous structures ( Zhang et al, 2022c ), beads-on-string structures ( Liu et al, 2022b ), hollow structures ( Liu et al, 2022c ) and tri-chamber complex nanostructures ( Wang et al, 2020 ), are prepared directly or indirectly (post-treatment) by regulating the electrospinning parameters. For example, a porous structure can be regarded as a core-shell structure with some shell holes and an empty core section that can accelerate the electron transfer along the longitude direction to increase the electron transfer rate.…”

Section: Electrospun Glucose Sensorsmentioning

confidence: 99%

Electrospun nanofiber-based glucose sensors for glucose detection

Zhang

Liu

et al. 2022

Front. Chem.

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Diabetes is a chronic, systemic metabolic disease that leads to multiple complications, even death. Meanwhile, the number of people with diabetes worldwide is increasing year by year. Sensors play an important role in the development of biomedical devices. The development of efficient, stable, and inexpensive glucose sensors for the continuous monitoring of blood glucose levels has received widespread attention because they can provide reliable data for diabetes prevention and diagnosis. Electrospun nanofibers are new kinds of functional nanocomposites that show incredible capabilities for high-level biosensing. This article reviews glucose sensors based on electrospun nanofibers. The principles of the glucose sensor, the types of glucose measurement, and the glucose detection methods are briefly discussed. The principle of electrospinning and its applications and advantages in glucose sensors are then introduced. This article provides a comprehensive summary of the applications and advantages of polymers and nanomaterials in electrospun nanofiber-based glucose sensors. The relevant applications and comparisons of enzymatic and non-enzymatic nanofiber-based glucose sensors are discussed in detail. The main advantages and disadvantages of glucose sensors based on electrospun nanofibers are evaluated, and some solutions are proposed. Finally, potential commercial development and improved methods for glucose sensors based on electrospinning nanofibers are discussed.

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Progresses on electrospun metal–organic frameworks nanofibers and their wastewater treatment applications

Cited by 38 publications

References 178 publications

Electrospun Zein/Polyoxyethylene Core-Sheath Ultrathin Fibers and Their Antibacterial Food Packaging Applications

Electrospun Zein/Polyoxyethylene Core-Sheath Ultrathin Fibers and Their Antibacterial Food Packaging Applications

Electrospun Core–Sheath Nanofibers with Variable Shell Thickness for Modifying Curcumin Release to Achieve a Better Antibacterial Performance

Electrospun nanofiber-based glucose sensors for glucose detection

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