▎ 摘　　要

In this study, silver nanoparticles (Ag NPs) were anchored on the surface of reduced graphene oxide (rGO) nanosheets during the co-reduction. Ag formed small nucleation centers, and then grew into Ag NPs on the surface of rGO. The prepared rGO-Ag was dispersed in poly (epsilon-caprolactone) (PCL) solution to obtain a homogeneous suspension under the help of ultrasonication. The mixture was then electrospun into fibrous membrane using the segmented electrospinning method to avoid the precipitation of rGO-Ag. The incorporation of rGO-Ag improved the electrical conductivity of the fibrous membrane, increased charges and stretching force of the solution, and narrowed the average diameter of the fibers and size distribution. Compared with pure PCL fibrous membrane, the addition of rGO-Ag (2 wt% to PCL) enhanced the mechanical properties of the hybrid fibrous membrane which increased the tensile strength, Young's modulus, and elongation at break to 153 %, 142 %, and 88 %, respectively. In addition, the incorporation of rGO and Ag NPs greatly enhanced the antibacterial activities of the hybrid fibrous membranes with 99.55 % and 99.46 % bacterial reductions of Staphylococcus aureus and Escherichia coli O157:H7, respectively.