This work is focused on the preparation of a multifunctional compound consisting of silver nanoparticles (AgNPs) embedded in a matrix of amorphous carbon previously loaded with Fe3C magnetic particles. The objective is to use the antibacterial properties of the AgNPs for environmental purposes, in such a way that the AgNPs can be recovered by physical means (magnetic separation).

The synthesis method was direct from ferrocene, silver nitrate and polyethylene glycol placed in a reaction tube and pyrolyzed by a plasma produced under vacuum conditions. For this, a conventional microwave oven was used. The compound obtained is a black powder, with similar consistency to graphite, but it responds strongly to the application of magnetic fields.