Surface chemical bonds, surface-enhanced Raman scattering, and dielectric constant of SiO2 nanospheres in-situ decorated with Ag-nanoparticles by electron-irradiation

摘要: Nanostructures of dielectric materials decorated with metal nanoparticles are great scientific interest; however, the involved synthesis methods complicated and require multistep chemical processing, including functionalization surfaces. In present work, without processes, silver average sizes in range 11 to 15 nm were in-situ synthesized on SiO2 nanospheres a single step process by irradiating solution (AgNO3–polyvinylpyrrolidone (PVP)–SiO2 nanospheres) 6 MeV electrons at 1.5 × 1015 e−/cm2, 3.0 × 1015 e−/cm2, 4.5 × 1015 e−/cm2 fluences. The electron irradiated solutions characterized different surface other techniques. results revealed that uniformly Ag nanoparticles, prominent bonds Ag–O, Si–O–Ag, Si–Ag. Moreover, decoration density could be tailored varying fluence. Su...