Synthesis and characterization of SiO2@ (Au@Pt), Unique Dual core-shell

Due to the unique properties of core shell nanostructures and the fact that different advantages can be achieved simultaneously, in recent years core-shells has received much attention. The synthesis method presented in this research is based on electrostatic adsorption between the core and the shell, which is a new method in the synthesis of core shell nanostructures. This method has advantages such as simplicity, high speed, high quality, repeatability and no need for complex preparation steps.Silica nanoparticles were synthesized by Stober method and after surface modification by APTES, which is a surfactant; it was used as a mold. The Unique dual core shell nanostructure of the silica-gold-platinum synthesized based on the electrostatic adsorption between the core and the shell.Field emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HR-TEM), elemental mapping, X-ray diffraction (XRD) pattern and Fourier transforms infrared spectroscopy (FTIR employed to characterize the structures.