Photocatalytic Activity and Filtration Performance of Hybrid TiO<sub<2</sub<-Cellulose Acetate Nanofibers for Air Filter Applications

A facile method to prepare hybrid cellulose acetate nanofibers containing TiO<sub<2</sub< (TiO<sub<2</sub<-CA nanofibers) by emulsion electrospinning technique was developed for the denitrification and filtration of particulate matters (PMs). This work found that hybrid TiO&l...
Ausführliche Beschreibung

A facile method to prepare hybrid cellulose acetate nanofibers containing TiO<sub<2</sub< (TiO<sub<2</sub<-CA nanofibers) by emulsion electrospinning technique was developed for the denitrification and filtration of particulate matters (PMs). This work found that hybrid TiO<sub<2</sub<-CA nanofibers mainly contain the anatase form of TiO<sub<2</sub<, contributing to the photodecomposition of NO gas under UV irradiation. The TiO<sub<2</sub<-CA nanofibers also showed an excellent filtration efficiency of 99.5% for PM<sub<0.5</sub< and a photocatalytic efficiency of 78.6% for NO removal. Furthermore, the results implied that the morphology of the TiO<sub<2</sub<-CA nanofibers, such as micro-wrinkles and protrusions, increased the surface hydrophobicity up to 140°, with the increased addition of TiO<sub<2</sub< nanoparticles. The proposed TiO<sub<2</sub<-CA nanofibers, as a result, would be promising materials for highly efficient and sustainable air filters for industrial and home appliance systems. Ausführliche Beschreibung