Fig. 1

Scaffold preparation. A Schematic presentation of the ES process of JFNF nanofibers. ESEM images of B JFNF nanofibers, C Au–Ag NPs, E AuNPs, pH 3, F AuNPs, pH 9; all grown on JFNF scaffolds. D XRD spectrum of synthesized Au–Ag NPs. The peaks at 27.8°, 32.2°, 46.2° 54.9°and 57.6° correspond to the lattice planes of (111), (200), (221), (311), (222) respectively and represent the face-centered cubic (FCC) structure of AgCl crystal. The remaining peaks at 38.2°, 66.4°, and 77.2° are attributed to the lattice planes of (111), (220), and (311) also correspond FCC structure of Au–Ag NPs