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Graphene Oxide Sheath on Ag Nanoparticle/Graphene Hybrid Films as an Anti-Oxidative Coating and Enhancer of Surface-Enhanced Raman Scattering.
MedLine Citation:
PMID:  23143878     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Surface enhanced Raman scattering (SERS) has been extensively investigated since its discovery on rough Ag surface because of high sensitivity and resolution. Ag nanostructures are considered highly active for SERS but their liability to oxidization impedes their practical applications as a SERS-based sensing platform. Here, we show that graphene oxide (GO) coating on the surface immobilized Ag nanoparticles (AgNP) on reduced GO (RGO) films (GO/AgNP/RGO, sandwich structure) protect AgNPs from oxidation under ambient condition for prolonged time up to 72 days with increased and reproducible SERS signals and fast adsorption kinetics of rhodamine 6G, a model Raman probe molecule. The present strategy for GO coating on top of the immobilized AgNPs will be useful for the development of an efficient SERS-based chemical and bio-sensor because of its simplicity, cost-effectiveness, long-term stability and high reproducibility.
Authors:
Young-Kwan Kim; Sang Woo Han; Dal-Hee Min
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-11
Journal Detail:
Title:  ACS applied materials & interfaces     Volume:  -     ISSN:  1944-8252     ISO Abbreviation:  ACS Appl Mater Interfaces     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-12     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101504991     Medline TA:  ACS Appl Mater Interfaces     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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