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The interfacing structural effect of Ag/graphene oxide nanohybrid films on surface enhanced Raman scattering

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Abstract

The interfacing structural effect of Ag/graphene oxide (GO) nanohybrid films on SERS was investigated by using Ag nanostructures immobilized on polyallylamine hydrochloride (PAA) functionalized-GO and reduced GO (RGO) films. We found that the electron transfer from Ag nanostructures to GO derivatives dominantly occurred at the interfaces between Ag nanostructures and the sp2 carbon domains of GO and RGO films. By utilizing 4-aminothiophenol (4-ATP) as a Raman probe, it was revealed that this electron transfer process augmented the enhancement factor (EF) of 4-ATP up to ∼1.8 fold on Ag/PAA-RGO nanohybrid films compared to Ag/PAA-GO nanohybrid films with the increasing interfacing area between Ag nanostructures and the sp2 carbon domains of GO derivatives through wet-chemical processes.

Graphical abstract: The interfacing structural effect of Ag/graphene oxide nanohybrid films on surface enhanced Raman scattering

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Publication details

The article was received on 13 Jan 2017, accepted on 05 Apr 2017 and first published on 13 Apr 2017


Article type: Paper
DOI: 10.1039/C7NR00308K
Citation: Nanoscale, 2017, Advance Article
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    The interfacing structural effect of Ag/graphene oxide nanohybrid films on surface enhanced Raman scattering

    Y. Kim, G. Ok, S. Choi, H. Jang and D. Min, Nanoscale, 2017, Advance Article , DOI: 10.1039/C7NR00308K

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