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

Figure 7

FESEM images at different magnifications (a, b) of the surface of cellulosic fibers coated with Au biogenic nanoparticles. The inset shows the EDS spectrum collected in (b). (c) Elemental mapping of the Au/biocomposite showing the distribution of Au nanoparticles.