Multifunctional TiO2/polyacrylonitrile nanofibers for high efficiency PM2.5 capture, UV filter, and anti-bacteria activity

Enhanced photocatalytic degradation of organic dyes by ultrasonic-assisted electrospray TiO2/graphene oxide on polyacrylonitrile/β-cyclodextrin nanofibrous membranes

“…TiO 2 NPs absorbed UV light when the composite nanofibrous membranes were exposed to UV light, causing the electrons to jump from their VB to their conduction band CB. Photogenerated electrons of the CB react with oxygen to generate ROS, such as superoxide anions, hydrogen peroxide (H 2 O 2 ), and hydroxide radicals (OH), which may inactivate microorganisms by affecting genomes and other intracellular molecules, thus causing cell lysis when irradiated TiO 2 NPs are released and come in contact with microorganisms [69] . It has been reported that the loading of GO material can improve the photocatalytic performance of TiO 2 NPs and further improve the antibacterial activity of fibrous membranes [46] .…”

Characterization of multifunctional PAN/ZnO nanofibrous composite filter for fine dust capture and photocatalytic activity

“…Table 2 shows the filtration performance of various NF filters reported in recent literature. Compared to PAN/TiO2 prepared by Chen et al, 2019, 17 which showed an efficiency of 96.75% and a pressure drop of 88 Pa, PAN/ZnO composite showed a filtration efficiency of 98.8% and a much lower pressure drop of 48 Pa. The significant reduction in pressure drop while maintaining a high‐filtration efficacy resulted in the highest quality factor among the various filtration materials reported.…”

“…15,16 Many polymer-based, electrospun filters have been employed for air filtration. Examples of such polymers are polyacrylonitrile (PAN), 1,[17][18][19] , Nylon (PA6) 19,20 and poly (vinylidene fluoride) (PVDF). 21 PAN is the most commonly used polymer due to its excellent chemical stability and remarkable mechanical properties.…”

“…Therefore, the use of doped polymers and polymer blends has become a major research interest. 6,23 Doping endows filters with additional functions, such as UV-shielding, 17 fire resistance, 24 photocatalytic activity, 15 and antimicrobial activity. 25,26 For instance, modification of NFs by metal oxide nanoparticles (NPs) increases the specific surface area of the fiber and, hence, increases the filtration efficiency.…”

Photocatalytic Activity and Filtration Performance of Hybrid TiO2-Cellulose Acetate Nanofibers for Air Filter Applications

“…Several TiO 2 incorporated nano bers have been of great interest for the removal of air pollutants because of their well-de ned dimensions, high speci c surface areas, and greater photocatalytic activities (Fallah et al 2018;Khan et al 2015;Lin et al 2019). For example, polyacrylonitrile (PAN) nano bers with embedded commercial photocatalysts, P25 and TiO 2 particles, showed an excellent ltration e ciency of 96.75% for PM 2.5 (Chen et al 2019). Dong et al have studied about the effective strategy for in situ growth of high adhesion of TiO 2 to polyvinylidene uoride (PVDF) nano bers via electrospinning coupled with cold plasma pretreatment and hydrothermal processing (Dong et al 2019).…”