Study on particulates and volatile organic compounds removal with TiO₂ nonwoven filter prepared by electrospinning

Porous nanofibers were synthesized by electrospinning technology with TiO₂. TiO₂/nanofibers showed a large surface area, high porosity, and small pore size, leading to an obvious enhancement of the photocatalytic activity. The degradation efficiency for the removal of acetone was > 99% with light source at UV-254 nm. At higher wavelengths, with light source at UV-365 nm, the degradation efficiency of acetone with photocatalytic reaction decreased with the increasing initial acetone concentrations and increased with increasing retention time. The removal efficiency of particulate matter with nanofiber decreased with the increasing gas pressure. The removal efficiency of particulate matter can be > 98% with nanofibers.