Plasmonic Sensing of Aqueous-Divalent Metal Ions by Biogenic Gold Nanoparticles

Figure 6

(a) DRS UV-Vis spectrum of the cellulosic support decorated with Au nanoparticles. (b) Picture of Au/cellulosic material composites obtained using 0.4 mL of Camellia sinensis aqueous extract.

(a)

(b)