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

TitleSynthesis of silver nanoparticles in an aqueous suspension of graphene oxide sheets and its antimicrobial activity
Publication TypeJournal Article
Year of Publication2011
AuthorsDas, MR, Sarma, RK, Saikia, R, Kale, VS, Shelke, MV, Sengupta, P
JournalColloids and Surfaces B-Biointerfaces
Volume83
Issue1
Pagination16-22
Date PublishedMAR
ISSN0927-7765
KeywordsAntimicrobial activity, Escherichia coli, graphene oxide, Pseudomonous aeruginosa, Silver nanoparticle
Abstract

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 5-25 nm, 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. (C) 2010 Elsevier B.V. All rights reserved.

DOI10.1016/j.colsurfb.2010.10.033
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

3.456

Divison category: 
Physical and Materials Chemistry