From waste to wealth: a cellulose-based fibrous membrane from recycled cigarettes supported with dual perovskite for formaldehyde degradation at room temperature

Formaldehyde, as a hazardous indoor contaminant following house decoration, is essential to its efficient removal at room temperature. This paper reports an eco-friendly approach for extracting cellulose acetate (CA) from waste cigarette filters construct nanofibrous composite membrane formaldehyde degradation ambient A was fabricated by salable electrospinning of and La2CoMnO6/CeO2 (LC), followed hydrolysis potassium doping with KOH. The demonstrates excellent catalytic activity (97.56% conversion), super stability (95.35% conversion after 50 h) long service life (93.96% 3 catalysis cycles), which ascribed the synergistic effect double perovskite rapid hygroscopic properties cellulose. In addition, obtained has higher moisture regain (7.82%) than that LC/CA (2.21%), commercial air filter using polypropylene (PP) fiber (near zero), accelerating adsorption fastening water removal, thereby allowing long-term positive progress oxidation reaction. work provides encouraging guidance further exploration into degradation, promising application in cleaning.