Developing nanofiber membrane materials with dual functionality for VOCs and particulate matter removal

Particulate matter and volatile organic compounds (VOCs) are major sources of air pollution both indoors and outdoors. Recently, air pollution from particulate matter and VOCs has become a significant threat to human health. Nanofiber membranes, known for their high strength, large specific surface area, fine dimensions, and flexibility, offer numerous advantages and are widely used in filtration applications. This study prepared a series of Pt/Co 3 O 4 -CeO 2 @PI nanofiber filters with catalytic properties using electrospinning, wet impregnation, and thermal treatment. The results reveal that the Pt/Co 3 O 4 -CeO 2 @PI nanofiber membrane, produced via electrospinning, has a uniform size distribution of approximately 250–;350 nm, a large pore volume, and a high specific surface area. Nanofiber filter with Pt/Co 3 O 4 -CeO 2 @PI demonstrated highest VOC removal efficiency at room temperature, achieving formaldehyde removal of 88.2% and toluene removal of 87.17%. Additionally, filter exhibits excellent performance for PM 0.3 filtration, reaching 98.13% efficiency at high temperatures.