A facile method to prepare hybrid cellulose acetate nanofibers containing TiO2 (TiO2-CA nanofibers) by emulsion electrospinning technique was developed for the denitrification and filtration of particulate matters (PMs). This work found that hybrid TiO2-CA nanofibers mainly contain the anatase form of TiO2, contributing to the photodecomposition of NO gas under UV irradiation. The TiO2-CA nanofibers also showed an excellent filtration efficiency of 99.5% for PM0.5 and a photocatalytic efficiency of 78.6% for NO removal. Furthermore, the results implied that the morphology of the TiO2-CA nanofibers, such as micro-wrinkles and protrusions, increased the surface hydrophobicity up to 140°, with the increased addition of TiO2 nanoparticles. The proposed TiO2-CA nanofibers, as a result, would be promising materials for highly efficient and sustainable air filters for industrial and home appliance systems.

In this study, we aimed to explore the morphologies of porous poly(lactic acid) (PLA) fibers through liquid–liquid phase separation, and investigate the relationship among pore formation, physical properties, and antibacterial activities of the fibers for identifying their potential as drug delivery carriers. Antibacterial activities of gentamicin-, kanamycin-, and amikacin-loaded PLA fibers against E. coli and S. epidermidis were evaluated. The antibacterial activity of drugs against E. coli showed the following profile: gentamicin > amikacin > kanamycin; however, S. epidermidis growth was almost completely inhibited immediately after the administration of all three drugs. The efficiency of gentamicin can be attributed to the electrostatic interactions between the positively and negatively charged antibiotic and bacterial cell membrane, respectively. Furthermore, gentamicin-loaded porous PLA fibers were evaluated as drug delivery systems. The cumulative amount of gentamicin in porous PLA nanofibers was considerably higher than that in other PLA fibers for 168 h, followed by 7:3 PLA > 6:4 PLA > 5:5 PLA > non-porous PLA. The 7:3 PLA fibers were projected to be ideal drug carrier candidates for controlled antibiotic release in delivery systems owing to their interconnected internal structure and the largest surface area (55.61 m2 g−1), pore size (42.19 nm), and pore volume (12.78 cm3 g−1).

In situ growth of cyclodextrin-based metal-organic frameworks (CD-MOFs) is investigated for the effective fabrication of MOF composites through the vapor diffusion method combined with O 2 plasma treatment. The growth rate of 𝜸-CD-MOFs on poly(ethylene terephthalate) fibers (CD-MOFs-PET) is determined for 136 h, and the CD-MOFs-PET with 24 h growth time shows the highest surface area without crystal deformation. The specific surface area of the CD-MOFs-PET with 24 h growth time is 142.88 m 2 g −1 , which is 235 times higher than the pristine PET fibers. The 24 h CD-MOFs-PET shows removal efficiencies higher than 99% for PM 0.1 and higher than 95% for SO 2 gas. The CD-MOFs-PET demonstrates high recovery of SO 2 adsorption ability by the repeated adsorption-desorption cycles, maintaining up to 90% of initial adsorption performance. This study intends to provide an informative discussion of the applicability of textile-based CD-MOFs and the development of reusable filters for the removal of SO 2 .

Nitrogen doped carbon nanoparticles on highly porous carbon nanofiber electrodes were successfully synthesized via combining centrifugal spinning, chemical polymerization of pyrrole and a two-step heat treatment.

A facile method to prepare hybrid cellulose acetate nanofibers containing TiO2 (TiO2 -CA nanofiber) by emulsion electrospinning technique was developed for denitrification and the filtration of particulate matters (PMs). This work found that hybrid TiO2-CA nanofibers mainly contain the anatase form of TiO2, attributing to the photodecomposition of NO gas under UV irradiation. TiO2-CA nanofibers also showed excellent filtration efficiency of 99.5% for PM0.5 and photocatalytic efficiency of 78.6% for NO removal. Furthermore, the results implied the morphology of TiO2-CA nanofibers, such as micro-wrinkles and protrusions, increased the surface hydrophobicity up to 140° with increased addition of TiO2 nanoparticles. The proposed TiO2-CA nanofibers, as a result, would be promising materials of highly efficient and sustainable air filters for industrial and home appliance systems.