3D Plasmonic Ensembles of Graphene Oxide and Nobel Metal Nanoparticles with Ultrahigh SERS Activity and Sensitivity

Figure 6

(a) UV-vis-NIR spectra of GO/GNRs aqueous solutions with different mass ratio. (b) Zeta potential of GO, GO/GNRs, and GNRs.

(a)

(b)