Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 351, Issue 2, Pages 343-347Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2010.08.004
Keywords
Surface-enhanced Raman scattering; Silver nanoparticles; Single-walled carbon nanotubes; 4-Aminothiophenol
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Funding
- National Natural Science Foundation of China [20671032, 20971040]
- Ministry of Education of China [708029]
- Province Natural Science Foundation of Heilongjiang Province [ZJG0602-01]
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A simple method of the fabrication of silver nanoparticles/single-walled carbon nanotubes (Ag/SWNTs) composite for surface-enhanced Raman scattering was presented. The morphology of Ag/SWNTs composite was characterized by scanning electron microscopy and X-ray diffraction. The performance of the Ag/SWNTs composite as surface-enhanced Raman scattering (SERS) active substrate was evaluated via using 4-aminothiophenol (PATP) as the probe molecule. Compared with PATP on AgNPs film, the SERS signal of PATP was obviously improved on the Ag/SWNTs composite. Then, by examining the relative enhancement of the nontotally symmetric (b(2)) modes of PATP, this effect was shown to arise from a charge-transfer contribution between molecule and metal. (C) 2010 Elsevier Inc. All rights reserved.
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