Premium
Biosynthesis of graphene‐metal nanocomposites using plant extract and their biological activities
Author(s) -
Wen Jing,
Salunke Bipinchandra K,
Kim Beom Soo
Publication year - 2017
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.5140
Subject(s) - graphene , nanocomposite , materials science , raman spectroscopy , nanotechnology , nanoparticle , nuclear chemistry , photothermal therapy , sonication , silver nanoparticle , reducing agent , transmission electron microscopy , chemical engineering , chemistry , organic chemistry , engineering , physics , optics
BACKGROUND Recently, numerous studies have utilized graphene/nanoparticle hybrid materials in bioapplications such as biosensing, bioimaging, photothermal therapies, delivery of drugs and genes, and stem cell and tissue engineering applications. In this study, we demonstrate a new, simple, low cost, environmentally safe process for the biosynthesis of graphene/silver ( GN /Ag) and graphene/gold ( GN /Au) nanocomposites using Xanthium strumarium plant extract. RESULTS After synthesis of Ag or Au nanoparticles by treatment of an aqueous solution of AgNO 3 or HAuCl 4 with Xanthium strumarium plant extract, graphite was added to the synthesized nanoparticle solution and sonicated in the ultrasonication bath. The synthesized nanocomposites were characterized by UV ‐visible spectroscopy, transmission electron microscopy, scanning electron microscopy, X‐ray photoelectron spectroscopy, X‐ray diffraction, Raman spectroscopy, and energy dispersive X‐ray spectroscopy. GN /Ag and GN /Au nanocomposites showed higher antimicrobial activity and higher peroxidase‐like activity, respectively, than individual nanoparticles, graphene alone, or reaction product without plant extract. CONCLUSION The present results show that GN /Ag and GN /Au nanocomposites can be ecofriendly synthesized using Xanthium strumarium leaf extract. The graphene/metal nanocomposites produced may be less‐toxic, biocompatible, and useful for bioapplications. © 2016 Society of Chemical Industry