Research Article
Au-Ag Core-Shell Nanospheres for Surface-Enhanced Raman Scattering Detection of Sudan I and Sudan II in Chili Powder
Figure 2
TEM images of Au@Ag nanoparticles synthesized with 1 mmol/L AgNO3 solution and different amounts of Au seeds including (a) 0.45 mL, (b) 0.9 mL, (c) 1.5 mL, and (d) 4.5 mL and synthesized with 0.9 mL Au seeds and different concentrations of AgNO3 solutions including (e) 0.5 mmol/L and (f) 2 mmol/L.
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