In-situ formation of Ag-containing nanoparticles in thin polymer films
摘要
A polymeric material containing Ag nanoparticles was formed by thermal annealing of silver nitrate dissolved in a polymer. Polyvinylalcohol and polyvinylpyrrolidone were used as polymer matrix. The composite material was prepared as thin films by spin coating. UV/VIS spectroscopy was used to monitor the preparation. The formation of a sharp band at 425 nm in the UV/VIS-spectra and ultrastructural changes (as revealed by SEM and SFM) indicated the generation of nanoparticles.