Abstract
This study focuses on the synthesis and characterization of Ag nanoparticle-decorated reduced graphene oxide (RGO) nanocomposites (Ag-RGO), which were obtained via a facile, green and efficient one-pot hydrothermal method. TEM results showed that the silver nanoparticles (20-50 nm) were uniformly attached onto RGO sheets with C/O ratio of 6.4 and 80% of sp2 carbon, obtained from XPS analysis. Compared with GO and RGO, the prepared Ag-RGO composites possessed significant antibacterial property; the minimum inhibitory concentration of Ag-RGO was just 31.25 μg/mL against Gram-positive bacteria S. aureus and Gram-negative bacteria E. coli. Particularly, the Ag-RGO nanocomposites released more Ag+ in acidic condition, promoting the produce of reactive oxygen species, which are acknowledged as disruption to the membrane integrity of the bacteria. Moreover, the Ag-RGO nanocomposites effectively dispersed and eliminated the maturely formed biofilm, showing superior advantages in responding to public health threats posed by biofilm-related infections.
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The authors are grateful for the National Nature Science Foundation of China (No. 51902141, 51872129), the Natural Science Foundation of Jiangsu Province (No. BK20191038, BK20181041), the Talent Introduction Project of Jiangsu University of Technology (No. KYY17021), the Social Development Project of Jiangsu Province (No. BE2016657) and the Major Project of Natural Science Research in Universities of Jiangsu Province (No. 16KJA430007).
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Wu, J., Zhu, B., Zhao, Y. et al. One-Step Eco-Friendly Synthesis of Ag-Reduced Graphene Oxide Nanocomposites for Antibiofilm Application. J. of Materi Eng and Perform 29, 2551–2559 (2020). https://doi.org/10.1007/s11665-020-04742-9
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DOI: https://doi.org/10.1007/s11665-020-04742-9