a, b TEM images of gelatin-Ag–AuNPs with different ratios of silver to gold synthesized at 80°C. a nAg/nAu = 2.4, : 2 mL, : 1 mL; b nAg/nAg = 1.2, : 2 mL, : 2 mL, the inset in b is magnification of the image marked by pane in b; c UV–vis spectra of Ag–AuNPs, AgNPs and AuNPs. (1) AgNPs (Cgelatin: 0.4 wt%, : 2 mL), (2) Ag–AuNPs in Figure 12a, (3) Ag–AuNPs in Figure 12b, (4) AuNPs (Cgelatin: 0.4 wt%, : 2 mL); d XRD of gelatin-Ag–AuNPs film dried at room temperature under vacuum. Peaks marked with stars arise from gelatin organic phase.
Liu et al. Nanoscale Res Lett 2011 6:22 doi:10.1007/s11671-010-9756-1