Green Synthesis of Ag NPs Using Ustilago maydis as Reducing and Stabilizing Agent

Figure 3

UV-Vis spectrum of Ag NPs obtained under 0.1 g or 0.9 g of U. maydis at pH 9 and pH 11 after (a) 100 seconds of sunlight exposure at room temperature, (b) 100 seconds of sunlight exposure and 10 min of reaction in the dark, and (c) 100 seconds of sunlight exposure and 6 days of reaction in the dark.

(a)

(b)

(c)