Synthesis of silver nanoparticles in an aqueous suspension of graphene oxide sheets and its antimicrobial activity.
A solution-based approach to the synthesis of silver (Ag) nanoparticles by chemical reduction of AgNO(3) 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 AgNO(3) 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.
Materials Science Division, North East Institute of Science & Technology, CSIR, Jorhat 785006, Assam, India. mnshrdas@yahoo.com
Manash R
MR
Das
Rupak K
RK
Sarma
Ratul
R
Saikia
Vinayak S
VS
Kale
Manjusha V
MV
Shelke
Pinaki
P
Sengupta
D000890:Anti-Infective Agents / Q000138:chemical synthesis* / Q000494:pharmacology*; D004926:Escherichia coli / Q000187:drug effects / Q000254:growth & development; D006108:Graphite / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008826:Microbial Sensitivity Tests; D010087:Oxides / Q000737:chemistry*; D010316:Particle Size; D011550:Pseudomonas aeruginosa / Q000187:drug effects / Q000254:growth & development; D012834:Silver / Q000737:chemistry* / Q000494:pharmacology*; D013056:Spectrophotometry, Ultraviolet; D013535:Suspensions; D014961:X-Ray Diffraction
D000890:Anti-Infective Agents; D010087:Oxides; D013535:Suspensions; D012834:Silver; D006108:Graphite