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 TiO2-CA mainly contain anatase form TiO2, contributing photodecomposition NO gas under UV irradiation. The also showed an excellent efficiency 99.5% PM0.5 ...