Preparation of hollow silver microspheres and their characterization

Hollow silver microspheres have been prepared using modified polystyrene microspheres as hard template. The process of preparation is as follows:polystyrene microspheres with a layer of silver coated on their surface by the chemical planting method were dissolved in tetrahydrofuran, then the hollow silver microspheres were prepared. The properties of silver microspheres were characterized by scanning electron microscopy, transmission electron microscopy and X-ray diffraction. The optical properties of silver microspheres were studied using UV-Vis spectrophotometer. The inside diameter of silver hollow microspheres is 250 nm, the shell thickness is 15 nm, and the absorption peak of nanoparticles can redshift from 600 nm to 900 nm at the range of UV-Vis spectra. These routes realize a faci