Journal
COLLOID AND POLYMER SCIENCE
Volume 290, Issue 5, Pages 401-409Publisher
SPRINGER
DOI: 10.1007/s00396-011-2555-0
Keywords
Monodispersion; Polystyrene/silver composite microspheres; Silver nanoparticles; Catalytic properties
Categories
Funding
- National Natural Science Foundation of China [20971089]
- National ST Major Project [2009ZX02038]
Ask authors/readers for more resources
This article presents a facile method for the preparation of polystyrene/silver (PS/Ag) composite microspheres. In this approach, monodisperse PS spheres were synthesized via dispersion polymerization and modified by sulfonation to obtain sulfonated PS spheres with sulfonic acid groups on the surfaces, and then adsorbed Sn2+ ions by electrostatic interaction and used as templates. PS/Ag composite microspheres were prepared successively by addition of [Ag(NH3)(2)](+) complex ions to the templates dispersion, adsorbing to the surfaces of templates, and then reduction of [Ag(NH3)(2)](+) complex ions to Ag nanoparticles by sodium potassium tartrate. The results showed that monodisperse PS spheres with sulfonic acid groups on the surfaces were coated by an incomplete and nonuniform coverage of Ag nanoparticles in the absence of Sn2+ ions. In the presence of Sn2+ ions, however, complete and uniform Ag nanoparticles coatings were obtained on the entire PS sphere. And the deposition density and size of Ag nanoparticles can be controlled by [Ag(NH3)(2)](+) concentration. The resulting PS/Ag composite microspheres were characterized by SEM, TEM, XRD, TGA, and UV-vis. Preliminary catalytical tests indicated these PS/Ag composite microspheres showed good catalytic properties.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available