Enhanced the dispersibility and permeability of silver nanoparticles over rGO grafted by positively-charged polyethyleneimine toward broad-spectrum sterilization

Silver nanoparticles (Ag NPs) are used as antimicrobial agents due to their high-efficiency, broad-spectrum disinfection activity. However, the agglomeration and stability problems caused by excessive release of silver ions (Ag+) have severely restricted their developments. Herein, a novel silver/po...

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Bibliographic Details
Published in:Ceramics international 2023-06, Vol.49 (12), p.20351-20356
Main Authors: Rao, Shaosheng, Liu, Qinqin, Li, Bing, Sun, Yangyang, Wang, Yinmao, Gao, Guozhong, Sun, Zhongti, Yang, Juan
Format: Article
Language:English
Subjects:
Antibacterial material
Polyethyleneimine
Reduced graphene oxide
Silver nanoparticles
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Summary:Silver nanoparticles (Ag NPs) are used as antimicrobial agents due to their high-efficiency, broad-spectrum disinfection activity. However, the agglomeration and stability problems caused by excessive release of silver ions (Ag+) have severely restricted their developments. Herein, a novel silver/polyethyleneimine/reduced graphene oxide (Ag/PEI/rGO) antibacterial material featuring good dispersibility and permeability was rationally designed, thus benefiting for the capture of bacteria due to the introducing of highly-cationic PEI modifier and controllable release of biocidal agents (Ag+). Compared with Ag/rGO, the Ag/PEI/rGO has excellent stability and shows a more efficient sterilization efficacy against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) with 100% germicidal efficiency with low orders of dozens of ppm. In addition, the outstanding biocompatibility of this Ag/PEI/rGO antibacterial material endows it with promising potential in sterilization applications, which is expected to solve the infection problem caused by bacterial biofilm formation.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2023.03.159