Method of immobilization of silver nanoparticles in solid substrates

摘要

The method of immobilization of silver nanoparticles in solid substrates characterized in that the immobilization occurs in two steps, where in the first step the selected substrate is modified by polyethyleneimine (PEI) with branched structure by simple immersion of the selected substrate in a bath that It consists of an aqueous solution of this polymer and then, the excess is washed from the surface of the substrate after its removal from the bath and the modified PEI substrate is immersed in the second step in silver salt solution where the production of the nanoparticles proceeds Due to the reduction properties of the functional groups, -NH and -NH2, present in the polymer and the nanoparticles remain covalently immobilized in the PEI adhesive layer of primarily deposited polyethyleneimine.