Open AccessGreen synthesis of nanosilver‐decorated graphene oxide sheets
Author(s) -
RodríguezGonzález Claramaría,
VelázquezVillalba Pamela,
Salas Pedro,
Castaño Víctor M.
Publication year - 2016
Publication title -
iet nanobiotechnology
Language(s) - English
Resource type - Journals
ISSN - 1751-875X
DOI - 10.1049/iet-nbt.2015.0043
Subject(s) - graphene , raman spectroscopy , materials science , silver nanoparticle , oxide , thermogravimetric analysis , reducing agent , chemical engineering , nanocomposite , graphite oxide , transmission electron microscopy , nanotechnology , scanning electron microscope , dynamic light scattering , graphite , graphene oxide paper , nanoparticle , nuclear chemistry , chemistry , composite material , metallurgy , optics , physics , engineering
A green facile method has been successfully used for the synthesis of graphene oxide sheets decorated with silver nanoparticles (rGO/AgNPs), employing graphite oxide as a precursor of graphene oxide (GO), AgNO 3 as a precursor of Ag nanoparticles (AgNPs), and geranium ( Pelargonium graveolens ) extract as reducing agent. Synthesis was accomplished using the weight ratios 1:1 and 1:3 GO/Ag, respectively. The synthesised nanocomposites were characterised by scanning electron microscopy, transmission electron microscopy, atomic force microscopy, X‐ray diffraction, UV‐visible spectroscopy, Raman spectroscopy, energy dispersive X‐ray spectroscopy and thermogravimetric analysis. The results show a more uniform and homogeneous distribution of AgNPs on the surface of the GO sheets with the weight ratio 1:1 in comparison with the ratio 1:3. This eco‐friendly method provides a rGO/AgNPs nanocomposite with promising applications, such as surface enhanced Raman scattering, catalysis, biomedical material and antibacterial agent.