Facile route to the synthesis and characterization of novel core-shell and Ag/Ru allied nanoparticles

The synthesis of polyvinylpyrrolidone (PVP) and dodecanethiol (DT) seed mediated Ag/Ru allied bimetallic nanoparticles were successfully carried out by the simultaneous reduction of the metal ions in aqueous and non-aqueous solutions with ethylene glycol (EG), diethylene glycol (DEG), glycerol (GLY) and pentaerythritol (PET). The TEM images of the AgRu NPs passivated by DT/DEG; DT/GLY; DT/EG (200 °C, 3 h) and PVP/PET (90 °C, 4 h) revealed novel well-ordered core-shell structures with particle sizes in the range of 8.2±0.7, 10.0±3.2, 11.4±1.3 and 18.89±6.83 nm respectively. The analysis of the nanocomposites using X-ray photoelectron spectroscopy and X-ray diffraction suggests dominance of the face-centred cubic structure with 2θ reflections slightly shifted from the silver peaks.