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Visible-light Induced Reduction of Graphene Oxide Using Plasmonic Nanoparticle
Published on: September 22, 2015
Effect of thiophenol adsorption on the optical properties of Ag nanoparticles supported on graphene/Rh(111)
H Okuyama1, S Yamamoto1, D Yamamoto1
1Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
Abstract:
Single-layer graphene on a transition metal surface forms a moiré structure that has been used as a template to fabricate metal nanoparticle assemblies. Ag nanoparticles were grown on graphene/Rh(111), and their optical absorption due to localized surface plasmon resonance (LSPR) was observed by optical reflectance spectroscopy. In addition, incoherent electron-hole pair excitation in the nanoparticles was observed using electron energy loss spectroscopy. Using these spectroscopies, the effect of thiophenol (C6H5SH) adsorption on the LSPR characteristics of the Ag nanoparticles was investigated.

