文献类型：期刊文献

英文题名：Antibacterial hydrogel filters via in situ growth of Ag-doped ZIF-8 on cellulose nanofibers: A novel strategy for biofouling control in water treatment

作者：He, Jinrong[1] Peng, Limin[1] Zhang, Zhipeng[1] Wu, Yuzhang[1] Qu, Wei[1]

第一作者：He, Jinrong

机构：[1] Research Institute of Wood Industry, Chinese Academy of Forestry, Xiangshan Road, Beijing, 100091, China

年份：2025

卷号：368

外文期刊名：Carbohydrate Polymers

收录：EI(收录号：20253218948250);Scopus(收录号：2-s2.0-105012624236)

语种：英文

外文关键词：Bandpass filters - Biofouling - Cellulose - Chemical bonds - Cost effectiveness - Disinfection - Escherichia coli - Filters (for fluids) - Hydrogels - Ion exchange - Microfiltration - Nanofibers - Oxygen - Public health - Reactive oxygen species - Silver compounds - Silver nanoparticles - Water treatment

摘要：Developing a green and highly efficient antibacterial filter for water disinfection was considered crucial to public health. Here, we first synthesized necklace-like Ag/Z@CNF nanofibers by in situ growth of ZIF-8 on T-CNF, followed by loading silver nanoparticles in the Z@CNF via ion exchange and chemical reduction. Finally, an anti-biofouling hydrogel filter was developed using an injection-driven filtration system that combining the Ag/Z@CNF and CNF hydrogel films. This unique necklace-like structure of Ag/Z@CNF enhanced interfacial bonding, reduced ZIF-8 aggregation and defects, and ensured long-term stability. The cellulose-based nanofiber substrate also provided excellent biocompatibility and sustainability, forming a three-dimensional porous hydrogel network. The antibacterial properties of the hydrogel film were evaluated using inhibition zone assays and Live/Dead fluorescence staining. The Ag/Z@CNF hydrogel film demonstrated higher antibacterial rates, with rates of 98.2 % against E. coli and 99.1 % against S. aureus, compared to the 79.95 % and 83.08 % antibacterial rates of the Z@CNF hydrogel film, respectively. Notably, the ·OH signal intensity generated by Ag/Z@CNF was 2.70-fold greater than that observed for Z@CNF. In dynamic antibiofouling experiments, the Ag/Z@CNF hydrogel film showed only a 14 % decline in flux, effectively inhibiting biofouling and leading to the formation of a loose and thin biofilm. The Ag/Z@CNF hydrogel films exhibited multiple synergistic antibacterial mechanisms, combining sustained Zn2+ and Ag+ release with visible-light-induced reactive oxygen species generation. This work has great potential for large-scale antibacterial filtration membranes, providing an efficient, sustainable, and cost-effective approach to water disinfection. ? 2025 Elsevier Ltd