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A facile route to synthesis silver nanoparticles into polyvinylpyrrolidone (PVP) or silica (SiO2) matrices using sol-gel method has been developed. The influence of matrices on the size and optical properties of silver nanoparticles were studied. Because the particle size increases at different rate with silver nitrate (AgNO3) concentration in different matrices, there is an up-limit for AgNO3 concentration...
A new synthetic method of Ag-Fe2O3 core-shell composite nanoparticles is reported. The silver nanoparticles used as the seeds was synthesised by an in situ method in the presence of p-toluenesulfonic acid-doped polyaniline. Then the Fe2O3 was coated on the surface of silver nanoparticles in the dimethylformamide solution. The core-shell structure of Ag-Fe2O3 composite nanoparticles was confirmed by...
Ion beam mixing of silver-covered oxide films by 400 keV argon ions induces the formation of silver nanoparticles on the oxide surface. Using consecutive conformal dielectric deposition and ion beam mixing, multiple layers of the nanoparticles can be fabricated. By means of diffusive reflection and absorption spectroscopy, surface plasmon resonances of silver nanoparicles are investigated in SiO2,...
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