Layer-by-layer self-assembly of oppositely charged Ag nanoparticles on silica microspheres for trace analysis of aqueous solutions using surface-enhanced Raman scattering.

Abstract

A layer-by-layer (LbL) self-assembly strategy involving oppositely charged Ag nanoparticles was used to deposit a nanoshell of Ag nanoparticles on silica microspheres for trace chemical measurements in aqueous solutions by means of surface-enhanced Raman scattering (SERS). Positively charged Ag nanoparticles were produced by reduction of Ag nitrate in a… (More)

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