Fast and simple synthesis of triangular silver nanoparticles under the assistance of light

Herein, the fast and simple formation of triangular silver nanoparticles (T-Ag NPs) was systematically studied by a chemical reduction process with the assistance of light irradiation. The effects of sodium borohydride (NaBH4) concentration, pH medium, and light source irradiation are investigated via the localized surface plasmon resonances (LSPRs) detection of silver nanoparticles (Ag NPs). Results indicated that pH and light source are the two primary factors for the morphology of Ag NPs while NaBH4 plays an important role to control the formation rate of T-Ag NPs. Moreover, the photoreduction time for synthesis of T-Ag NPs is 180 min, and this method can be easily synthesized in any laboratory.