▎ 摘　　要

In this study, reduced graphene oxide with immobilized silver nanoparticles cotton fabric (Ag/rGO/cotton) was produced by the dip-coating cotton in silver immobilizing onto graphene oxide (Ag/GO) suspension to prepared Ag/GO/cotton material followed by the addition of vitamin C (VC) as an environmentally friendly reducing agent. The characteristics of Ag/GO and modified cotton were investigated by Fourier transform infrared spectroscopy, X-ray diffraction, Raman spectroscopy, transmission electron microscopy, scanning electron microscope, X-ray photoelectron spectroscopy, and energy-dispersive X-ray spectroscopy. Silver nanoparticles (AgNPs) were uniformly distributed on the surface of graphene oxide (GO) sheets with an average size of 10-15 nm, while the cotton surface was evenly covered by Ag/rGO. The zone of inhibition against Staphylococcus aureus (S. aureus), Pseudomonas aeruginosa (P. aeruginosa), and Escherichia coli (E. coli) bacteria indicated that Ag/rGO/cotton possessed the highest antibacterial activity when compared to other modified cotton. Moreover, the Ag/rGO/cotton also exhibited effective hydrophobicity with a wetting angle of 103.85 degrees +/- 0.75 degrees, which supported the prevention of bacterial infection and adherent on the cotton surface. To confirm the low cytotoxic property of Ag/rGO/cotton for human use, the cell viability of HepG2, A549, and Hek293 cell lines were evaluated when contacted with the material, while the low amount of leached Ag+ from Ag/rGO/cotton was under the accepted limit. All results of the study confirmed that Ag/rGO/cotton possesses significant potential for several antibacterial applications such as protective equipment. [GRAPHICS]