Studium modifikace grafen-oxidu stříbrnými nanočásticemi

Abstract

This thesis deals with the preparation and characterization of thin films of modified graphene oxide with bio-nano-silver. Graphene oxide prepared by the modified Hummers method, and its subsequent modification with silver nanoparticles were precursors for the formation of thin films from pure and modified graphene oxide. The films differ in the flow rate of the silver nanoparticle reactant during their biosynthesis in the microfluidic reactor and the thickness of the films. The resulting materials were characterized by basic and instrumental analytical methods, namely XRD, STEM, FTIR and DSC. The individual films of the modified GO were compared with each other and compared with reference pure GO films. Comparison of prepared materials and confrontation with commercial material reduced GO, it was found that modification with nanosilver even in such a small content has an effect on the properties of the material. The film prepared from Ag-modified GO is more temperature stable, its surface is smoother and strong hydrophobicity was observed.