A Hierarchical Porous Cellulose Sponge Modified with Chlorogenic Acid as a Antibacterial Material for Water Disinfection

Water contaminated by microorganisms will seriously endanger public safety, as many diseases are caused microorganisms, and water disinfection materials offer an effective method to solve this problem. In work, a hierarchical porous structure cellulose sponge (CS) was constructed the filter substrate, where “long−chain” served skeleton construct major pores, “short−chain” filled gaps between minor pores. After CS covalently modified chlorogenic acid (CGA) fabricate cellulose–chlorogenic (C−CGAS), retained. Due structure, C−CGAS showed good mechanical stability (2.84% unrecoverable strain after 1000 compression cycles). Furthermore, also antibacterial antifungal abilities due antimicrobial ability high flux, could eliminate 95% of E. coli within 0.5 h in test. stable covalent modification CGA its stability, no breakage, even nine consecutive use cycles, properties were almost unchanged. Thus, is reusable highly efficient material. This study provides new approach for preparation recyclable, safe, materials.