Layer cellulose-based sandwich sponge with directionally aligned channels for rapid removal of polystyrene nanoplastics and TBBPA
Nanoplastics can adsorb organic pollutants and facilitate their transport in water environments, thereby increasing potential risks to ecosystems and human health. However, most porous adsorbents have an even structure, making it difficult to combine rapid pollutant capture with stable retention. Herein, a layer cellulose-based sandwich (PCP) sponge with directionally aligned channels was fabricated through directional freezing and chemical cross-linking of cellulose fibers with chitosan and…