Novel 3D arrays of gold nanostructures on suspended platinum-coated carbon nanotubes as surface-enhanced Raman scattering substrates

We report electrochemically controlled fabrications and the corresponding enhancement in Raman scattering of the three-dimensional (3D) gold arrays prepared on the template of platinum-coated carbon nanotubes (CNTs) by electrochemical deposition (ECD). The topography of deposited gold was varied fro...

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Bibliographic Details
Published in:Materials letters 2012-08, Vol.81, p.9-12
Main Authors: Lee, Moon-Keun, Seo, Jeongeun, Cho, Seok Jin, Jo, Youngdeok, Kim, Seonae, Kang, Youngjong, Lee, Haiwon
Format: Article
Language:English
Subjects:
Arrays
carbon nanotubes
Deposition
Electrochemical deposition
electrochemistry
Gold
Gold nanoparticles
Gold nanowires
Nanoparticles
Nanostructure
Nanowires
Raman scattering
Raman spectroscopy
surface area
surface roughness
Surface-enhanced Raman scattering
Three dimensional
Three dimensional networks of carbon nanotubes
topography
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Summary:We report electrochemically controlled fabrications and the corresponding enhancement in Raman scattering of the three-dimensional (3D) gold arrays prepared on the template of platinum-coated carbon nanotubes (CNTs) by electrochemical deposition (ECD). The topography of deposited gold was varied from nanoparticles to nanowires by ECD conditions. The increasing surface area of 3D arrays of gold nanoparticles contributed to increase significantly the sensitivity of surface enhanced Raman scattering (SERS). For the same 3D arrays consisting of gold nanowires but with different surface roughness, much higher SERS activity was obtained when the surface of nanowires was rough. [Display omitted]
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2012.04.124