Green synthesis of nanosilver-decorated graphene oxide sheets

• Published in: IET nanobiotechnology Vol. 10; no. 5; pp. 301 - 307
• Main Authors: Rodríguez-González, Claramaría, Velázquez-Villalba, Pamela, Salas, Pedro, Castaño, Víctor M
• Format: Journal Article
• Language: English
• Published: United States The Institution of Engineering and Technology 01-10-2016
• Subjects: antibacterial agent; atomic force microscopy; biomedical material; catalysis; eco‐friendly method; energy dispersive X‐ray spectroscopy; Geranium; Graphene; graphene oxide sheets; graphite oxide; green facile method; homogeneous distribution; nanocomposites; nanofabrication; Nanoparticles; Nanostructure; Oxides; Pelargonium graveolens; Precursors; Raman spectroscopy; reducing agent; rGO‐AgNP nanocomposite; scanning electron microscopy; Sheets; Silver; silver nanoparticles; surface enhanced Raman scattering; Synthesis; thermogravimetric analysis; transmission electron microscopy; ultraviolet spectra; UV‐visible spectroscopy; visible spectra; X‐ray chemical analysis; X‐ray diffraction; nanofabrication; X-ray diffraction; catalysis; antibacterial agent; rGO-AgNP nanocomposite; nanocomposites; graphene; visible spectra; nanoparticles; energy dispersive X-ray spectroscopy; surface enhanced Raman scattering; reducing agent; transmission electron microscopy; scanning electron microscopy; geranium; biomedical material; UV-visible spectroscopy; green facile method; thermogravimetric analysis; graphene oxide sheets; graphite oxide; atomic force microscopy; Raman spectroscopy; ultraviolet spectra; homogeneous distribution; silver nanoparticles; X-ray chemical analysis; silver; eco-friendly method
• ISSN: 1751-8741; 1751-875X; 1751-875X
• DOI: 10.1049/iet-nbt.2015.0043

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), AgNO3 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.