Abstract
Ag nanoparticle–graphene oxide hybrid materials show good antimicrobial activity against E. coli and P. aeruginosa which can be useful in biological as well as materials science research area. [Display omitted]
▶ 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.
A solution-based approach to the synthesis of silver (Ag) nanoparticles by chemical reduction of AgNO3 in a graphene oxide (GrO) suspension is demonstrated. X-ray diffraction and transmission electron microscopy indicate that the Ag nanoparticles, of size range 5–25nm, were decorated on the GrO sheets. The size and shape of the Ag nanoparticles are dependent on the concentration of the AgNO3 solution. Antimicrobial activity of such hybrids materials is investigated against the Gram negative bacteria Escherichia coli and Pseudomonous aeruginosa. The bacterial growth kinetics was monitored in nutrient broth supplemented with the Ag nanoparticle–GrO suspension at different conditions. It was observed that P. aeruginosa is comparatively more sensitive to the Ag nanoparticle–GrO suspension.