Figure 2
From: Morphology and composition controlled synthesis of flower-like silver nanostructures
The extinction spectra of the flower-like Ag nanostructures. The extinction spectra of the flower-like Ag nanostructures prepared with PVP and different amounts of catalyzing agent NH3•3H2O. In the legend of the figure, for simplification, the samples are denoted as P200, P400, P600, and P800, respectively. ‘P’ stands for ‘PVP’ and the followed number stands for the volume of NH3•3H2O added.