Figure 3From: Hydrogen treatment-improved uniform deposition of Ag nanoparticles on ZnO nanorod arrays and their visible-light photocatalytic and surface-enhanced Raman scattering propertiesPhotocatalytic degradation of R6G in the visible light region without and with different photocatalysts. ( a ) Remaining percentage of R6G vs. irradiation time. ( b ) ln (C/C0) vs. irradiation time. Initial R6G concentration at 10−5 M; temperature of 25°C.Back to article page