Strong Dependence of Surface Enhanced Raman Scattering on Structure of Graphene Oxide Film.

ABSTRACT: Graphene and its derivatives have been demonstrated to be good surface-enhanced Raman scattering (SERS) substrates. However, the literature offers some contrasting views on the SERS effect of graphene-based materials. Thus, understanding the mechanism of the SERS enhancement of graphene is essential for exploring its application as a SERS substrate. In this study, graphene oxide (GO) and chemically reduced graphene oxide (CRGO) films with different morphologies and structures were prepared and applied as SERS substrates to detect Raman dye molecules. The observed enhancement factors can be as large as 10~10³. The mechanism of SERS enhancement is discussed. It is shown that the SERS effect was independent of the adsorption of dye molecules and the surface morphologies of graphene-based film

SUBMITTER: Wang L 

PROVIDER: S-EPMC6073250 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature