Synthesis of silver nanoparticles in an aqueous suspension of graphene oxide sheets and its antimicrobial activity

▶ A solution-based approach is adapted to the synthesis of silver (Ag) nanoparticles by chemical reduction of AgNO3 in graphene oxide (GrO) suspension. ▶ The size and shape of the Ag nanoparticles are dependent on the concentration of the AgNO3 solution. ▶ Ag nanoparticle-GrO hybrid materials show a good antimicrobial activity against the Gram negative bacteria E. coli and P. aeruginosa.