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

En-Jiang Liu, Jia-Xing Huang, Run-Ze Hu, Xiao-Hui Yao, Wei-Guo Zhao, Dong-Yang Zhang and Tao Chen ()
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En-Jiang Liu: College of Biotechnology and Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang 212018, China
Jia-Xing Huang: College of Biotechnology and Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang 212018, China
Run-Ze Hu: College of Biotechnology and Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang 212018, China
Xiao-Hui Yao: College of Biotechnology and Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang 212018, China
Wei-Guo Zhao: College of Biotechnology and Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang 212018, China
Dong-Yang Zhang: College of Biotechnology and Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang 212018, China
Tao Chen: College of Biotechnology and Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang 212018, China

Sustainability, 2022, vol. 15, issue 1, 1-17

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

Keywords: cellulose; hierarchical porous cellulose sponge; chemical modification; chlorogenic acid; mechanical stability; water disinfection (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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