Electrospun PVP/TiO2 Nanofibers for Filtration and Possible Protection from Various Viruses like COVID-19

Abstract

In this study, TiO2 nanofibers were prepared with Polyvinylpyrrolidone (PVP) polymer using sol-gel method via electrospinning technique. Owing to the advantages of small fiber diameter, tunable porosity, low cost, large surface to volume ratio, structure control, light-weight, and less energy consumption, electrospun nanofibers are evolving as an adaptable material with a number of applications, in this case for filtration and environmental/virus protection. Different samples of TiO2/PVP nanofibers have been prepared by changing the parameters to achieve the best result. As the polymer concentration was increased from 6 to 8 wt.% of PVP, diameter of the resultant fibers was seen to be increased, implying decrease in the pore-size of the fibers up to 1.4 nm. Surface morphology has been checked via Scanning Electron Microscope (SEM) images. Crystalline nature has been analyzed by X-ray Crystallography. Using the Bruanauer-Emmett-Teller (BET) test, surface area and porosity has been checked for the suitable application. The synthesized TiO2/PVP nanofibers have tremendous practical potentials in filtration and environmental remediation applications.

Engineering of Vaginal Lactobacilli to Express Fluorescent Proteins Enables the Analysis of Their Mixture in Nanofibers

“…Nanofibers are produced by electrospinning, which is based on the drying of a thin liquid jet that is formed from a drop of polymer solution in a strong electric field [19] and are used in numerous applications [20,21]. They also represent an effective material for delivering different types of drugs to the nasal, oral, and vaginal mucosa [22], while at the same time, they protect drugs from environmental factors [23].…”

An overview on electrospinning and its advancement toward hard and soft tissue engineering applications

“…This is in response to encounter COVID-19, where nano-filtered face mask was developed with nanofibers (in the diameter range of 100-500 nm) arranged in orthogonal/unidirectional directions to relieve the challenges. For instance, PVP/TiO 2 nanofibers have been electrospun for potential application toward filtration and environmental remediation com/ compa ny/ beiji ng-landi ngji-engin eering-tech-co. ,-ltd China [140]. In addition, antimicrobial nanoparticles were also introduced into the nanofibers to increase the filtration efficacy and which is possible only through electrospinning.…”

Antiviral effects of coinage metal-based nanomaterials to combat COVID-19 and its variants

“…The nanoporosity (1.44–4.08 nm) of the electrospun nanofibers was confirmed by BET assay and believed to be effective for protective masks as well as air and water filtration of viruses. 169…”

“…The nanoporosity (1.44-4.08 nm) of the electrospun nanofibers was confirmed by BET assay and believed to be effective for protective masks as well as air and water filtration of viruses. 169 Similarly, ZnO-based nanomaterials have been reported to be effective against SARS-CoV-2 as ZnO-based surfaces and coatings minimize the infectivity of SARS-CoV-2 to about 99.9 in 1 h. 170,171 Gouda and team members studied the effect of hesperidin-mediated ZnO NPs against hepatitis A virus and thought these particles might be effective against COVID-19. This study revealed the antiviral potential of hesperidinmediated ZnO NPs compared to hesperidin alone.…”