Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 430, Issue -, Pages 103-109Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2013.04.012
Keywords
Ag@Au-graphene nanocomposites; Noble metal nanoparticles; Surface enhanced Raman spectroscopy; Hybrid materials
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Funding
- National Natural Science Foundation of China [60678050]
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A wet chemical approach to synthesize Au-graphene (Au-G), Ag-G and Ag@Au-G hybrid nanocomposites in the water-vitamin C system using graphene oxide and noble metal nanoparticles (NPs) is reported in this paper. AFM, TEM, UV-vis absorption, Raman spectroscopy and XRD are employed to characterize the morphology, optical properties and analyze crystal characteristics. Ag@Au-G nanocomposites have stronger surface enhanced Raman scattering (SERS) activity than that of pure Au G and Ag-G. So the Ag@Au-G nanocomposites can be used not only for SERS, but also to exhibit good compatibility in biological detection. It is expected that these hybrid materials can be used as new functional building blocks to assemble novel three-dimensional (3D) complex multicomponent nanostructures, which are believed to be useful for nanodevices. (C) 2013 Elsevier B.V. All rights reserved.
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