Green synthesis of silver/silica nanocomposite in seconds at room temperature using reducing agents obtained from silicon nanoparticles

摘要: In this work, we present a single step, highly stable, energy efficient, green and economically scalable room temperature method for the synthesis of silver/silica (Ag/SiO2) nanocomposite. The Ag/SiO2 nanocomposites are synthesized from silver nitrate solution using extracts silicon nanoparticles. nanoparticles, which prepared through laser ablation in ethanol with polyvinylpyrrolidone,are used as reducing agent. have been characterized by ultraviolet–visible spectroscopy, x-ray diffraction pattern Fourier transform infrared spectrum. absorption spectrum colloidal shows surface plasmon peak at 424 nm. nanocomposite powder only contains structures, thus SiO2 nanoparticles amorphous. nonlinear properties studied Z-scan method. value is measured 17 × 10−3 cm W−1 positive sign, illustrates two photon phenomena. large near resonance frequency Ag