Ag nanoparticles as multifunctional SERS substrate for the adsorption, degradation and detection of dye molecules

▸ A simple method was used to synthesize the silver Ag NPs. ▸ Change the reaction condition to obtain the best plasmon peak of Ag NPs. ▸ The multifunction of Ag NPs was analyzed for using as SERS substrate, adsorbent, and photocatalyst. ▸ Endows a new value of the SERS technique of monitoring the photocatalytic processes.