Figure 7From: Hydrogen treatment-improved uniform deposition of Ag nanoparticles on ZnO nanorod arrays and their visible-light photocatalytic and surface-enhanced Raman scattering propertiesSERS spectra of R6G on ZnO@Ag, ZnO-A@Ag, and ZnO-H@Ag. R6G concentration at 10−9 M.Back to article page