Photocatalytic and Surface-Enhanced Raman Scattering (SERS) Activity of Bjosynthesized Anisotropic Gold Nanoparticles

摘要

Synthesis of anisotropic nanoparticles is challenging to researchers due to the fascinating shape dependent properties and diverse potential applications in plasmonics, sensors, biodiagnostics and surface-enhanced Raman scattering (SERS) spectroscopy. We have synthesized highly stable gold nanotriangles using the flower extract of Neolamarckia cadamba at room temperature. The biosynthesized anisotropic gold nanoparticles were characterized by UV-Visible spectroscopy, XRD, TEM and FTIR techniques. The synthesized nanoparticles were exploited both as a photocatalyst to enhance the formation of hydroxyl radicals generated from photolysis of H_2O_2 and also as an efficient SERS-active substrate for methylene blue as Raman probe molecule.