Au nanoparticles on graphitic petal arrays for surface-enhanced Raman spectroscopy

Journal Article · Mon Sep 27 00:00:00 EDT 2010 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3493656· OSTI ID:21466940

Rout, Chandra Sekhar; Kumar, Anurag; Guoping, Xiong; Fisher, Timothy S ^[1]; Irudayaraj, Joseph ^[1]

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1. Birck Nanotechnology Center and School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907 (United States)

We report a unique substrate for surface-enhanced Raman scattering (SERS) based on Au nanoparticle-decorated, thin graphitic petals. The petals were grown on Si substrates by microwave plasma chemical vapor deposition without catalyst, followed by Au nanoparticle decoration on the oxygen plasma-treated petals by electrodeposition. The substrates possess high surface area and sharp nanoscale features that enable high SERS sensitivity to detect 1x10{sup -7} M rhodamine 6G in methanol solution. The obtained SERS enhancement is comparable to the best values reported in the literature and is determined to result from high surface area and increased density of Au nanoparticles on the petal surfaces.

• OSTI ID: 21466940
• Journal Information: Applied Physics Letters, Vol. 97, Issue 13; Other Information: DOI: 10.1063/1.3493656; (c) 2010 American Institute of Physics; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
36 MATERIALS SCIENCE
CATALYSTS
CHEMICAL VAPOR DEPOSITION
DYES
ELECTRODEPOSITION
FABRICATION
GOLD
GRAPHITE
METHANOL
MICROWAVE RADIATION
NANOSTRUCTURES
OXYGEN
PARTICLES
PLASMA
RAMAN EFFECT
RAMAN SPECTROSCOPY
SENSITIVITY
SUBSTRATES
SURFACE AREA
SURFACES
ALCOHOLS
CARBON
CHEMICAL COATING
DEPOSITION
ELECTROLYSIS
ELECTROMAGNETIC RADIATION
ELEMENTS
HYDROXY COMPOUNDS
LASER SPECTROSCOPY
LYSIS
METALS
MINERALS
NONMETALS
ORGANIC COMPOUNDS
RADIATIONS
SPECTROSCOPY
SURFACE COATING
SURFACE PROPERTIES
TRANSITION ELEMENTS