Cover Image

One-step size-controlled synthesis of functional graphene oxide/silver nanocomposites at room temperature

A stable aqueous suspension of functional graphene oxide/silver nanocomposite (FGO/Ag) was prepared in an alkaline medium by a simple room temperature stirring method. Functional graphene oxide (FGO) served as substrate, reducing agent and stabilizer for the silver nanoparticles (Ag-NPs). The pH of...

Full description

Saved in:
Bibliographic Details
Main Authors: Vijay Kumar, S., Huang , N.M., Lim, H.N., Marlinda, A.R., Harrison, I., Chia, C.H.
Format: Article
Published: 2012
Subjects:
QC Physics
Online Access:http://eprints.um.edu.my/6320/
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.um.eprints.6320
record_format eprints
spelling my.um.eprints.63202013-07-03T02:41:35Z http://eprints.um.edu.my/6320/ One-step size-controlled synthesis of functional graphene oxide/silver nanocomposites at room temperature Vijay Kumar, S. Huang , N.M. Lim, H.N. Marlinda, A.R. Harrison, I. Chia, C.H. QC Physics A stable aqueous suspension of functional graphene oxide/silver nanocomposite (FGO/Ag) was prepared in an alkaline medium by a simple room temperature stirring method. Functional graphene oxide (FGO) served as substrate, reducing agent and stabilizer for the silver nanoparticles (Ag-NPs). The pH of the solution played a prominent role in the formation of the Ag-NPs. The morphology of the nanoparticles (NPs) could be controlled by adjusting the pH between 9.51 and 12.62 by adding NaOH solution. The aqueous stability of the nanocomposites was greatly improved by the attached functional groups. UV-visible spectroscopy, transmission electron microscopy (TEM) and field emission scanning electron microscopy (FESEM) images suggested the formation of spherical, Ag-NPs with a narrow size distribution at pH 11.40. The nanocomposites showed high bactericidal activity against Escherichia coli bacteria and also enhancement in Raman intensity due to surface enhanced Raman scattering (SERS), which was found to be dependent on the size distribution of the Ag-NPs. This work provides a simple, scalable and environmentally friendly approach to the preparation of a FGO/Ag nanocomposite with promising antibacterial and SERS properties. 2012 Article PeerReviewed Vijay Kumar, S. and Huang , N.M. and Lim, H.N. and Marlinda, A.R. and Harrison, I. and Chia, C.H. (2012) One-step size-controlled synthesis of functional graphene oxide/silver nanocomposites at room temperature. Chemical Engineering Journal, 219. ISSN 1385-8947 10.1016/j.cej.2012.09.063
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QC Physics
spellingShingle QC Physics
Vijay Kumar, S.
Huang , N.M.
Lim, H.N.
Marlinda, A.R.
Harrison, I.
Chia, C.H.
One-step size-controlled synthesis of functional graphene oxide/silver nanocomposites at room temperature
description A stable aqueous suspension of functional graphene oxide/silver nanocomposite (FGO/Ag) was prepared in an alkaline medium by a simple room temperature stirring method. Functional graphene oxide (FGO) served as substrate, reducing agent and stabilizer for the silver nanoparticles (Ag-NPs). The pH of the solution played a prominent role in the formation of the Ag-NPs. The morphology of the nanoparticles (NPs) could be controlled by adjusting the pH between 9.51 and 12.62 by adding NaOH solution. The aqueous stability of the nanocomposites was greatly improved by the attached functional groups. UV-visible spectroscopy, transmission electron microscopy (TEM) and field emission scanning electron microscopy (FESEM) images suggested the formation of spherical, Ag-NPs with a narrow size distribution at pH 11.40. The nanocomposites showed high bactericidal activity against Escherichia coli bacteria and also enhancement in Raman intensity due to surface enhanced Raman scattering (SERS), which was found to be dependent on the size distribution of the Ag-NPs. This work provides a simple, scalable and environmentally friendly approach to the preparation of a FGO/Ag nanocomposite with promising antibacterial and SERS properties.
format Article
author Vijay Kumar, S.
Huang , N.M.
Lim, H.N.
Marlinda, A.R.
Harrison, I.
Chia, C.H.
author_facet Vijay Kumar, S.
Huang , N.M.
Lim, H.N.
Marlinda, A.R.
Harrison, I.
Chia, C.H.
author_sort Vijay Kumar, S.
title One-step size-controlled synthesis of functional graphene oxide/silver nanocomposites at room temperature
title_short One-step size-controlled synthesis of functional graphene oxide/silver nanocomposites at room temperature
title_full One-step size-controlled synthesis of functional graphene oxide/silver nanocomposites at room temperature
title_fullStr One-step size-controlled synthesis of functional graphene oxide/silver nanocomposites at room temperature
title_full_unstemmed One-step size-controlled synthesis of functional graphene oxide/silver nanocomposites at room temperature
title_sort one-step size-controlled synthesis of functional graphene oxide/silver nanocomposites at room temperature
publishDate 2012
url http://eprints.um.edu.my/6320/
_version_ 1643687811281321984
score 13.211869

Similar Items