Electrospun Cellulose Air Filter Coated with Zeolitic Imidazolate Frameworks (ZIFs) for Efficient Particulate Matter Removal: Effect of Coated ZIFs on Filtration Performance

Recently, electrospun nanofibers have gained attention because they are capable to capture PM pollutants. In this work, we developed bio-based air filters, which called cellulose@ZIFs, by dip-coating electrospun cellulose nanofibers with three synthesized zeolitic-imidazolate frameworks (ZIFs), coding as, ZIF-8, ZIF-67 and Zn/Co-ZIF. It was found that all cellulose@ZIFs improved PM filtration perfomance. Among of these, cellulose@ZIF-8 exhibited the best PM removal efficiency (97.7 %) with the highest quality factor. In addition, a double-layer of cellulose@ZIF-8 showed an enhanced efficiency to 99.07 %. Considering the high performance, green and low-cost fabrication, the cellulose@ZIF-8 is a promising air filter for PM capture.