Structural modulation of Cu-BTC/PS nanofiber membrane and its low resistance antimicrobial air filtration application

Increasing air pollution poses a serious challenge to human beings. In view of the contradiction between filtration efficiency and pressure drop and the single function of traditional air filtration materials, the present study synthesized Cu-BTC by room temperature solvent method, and then based on the strategy of in-situ modification of Cu-BTC, Cu-BTC/PS-2 composite membranes with low filtration resistance and antibacterial resistance were constructed by modulating the pore structure of polystyrene (PS) fibre membranes. The composite membrane achieved 99.79 % filtration efficiency against PM 0.3 with a pressure drop of only 50.1 Pa. The stability of the composite membrane was significantly better than that of the commercial electret melt-blown filters, and the antimicrobial rate of the composite membrane against E. coli was greater than 99.9 %. This study provides a new material design strategy for the development of a new generation of high-efficiency, low-resistance and antibacterial air filtration materials.