An active surface enhanced Raman scattering substrate using carbon nanocoils

作者: Dawei Li , Lujun Pan , Shifa Wu , Shuai Li , None

DOI: 10.1557/JMR.2013.212

关键词: Materials scienceCarbonNanotechnologyRaman spectroscopyDeposition (law)Raman scatteringChemical engineeringSubstrate (chemistry)Sputter depositionSpin coatingRhodamine 6G

摘要: A novel surface enhanced Raman scattering (SERS) substrate was produced by combining Ag nanoparticles (AgNPs) and carbon nanocoils (CNCs). Three different methods were developed for loading AgNPs on CNCs, which include (i) direct deposition of CNCs radio-frequency magnetron sputtering (RFMS) to form an Ag–CNC hybrid, (ii) a TiO2 film RFMS, followed photoinduced growth Ag–TiO2–CNC hybrid (called A-substrate), (iii) spin coating then B-substrate). Experimental SERS results showed that B-substrates exhibited the highest enhancement with factor over 107 rhodamine 6G. The as-prepared substrates also much higher signal than ordinary planar in our system. This mainly due unique three-dimensional structure where large area available more densely packed contribute abundant hot spots.

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