Gold/palladium and silver/palladium colloids as novel metallic substrates for surface-enhanced Raman scattering
New surface-enhanced Raman scattering (SERS) substrates, composed of gold or silver colloidal nanoparticles doped with palladium, were prepared. These novel colloids are stable and maintain a satisfactory SERS efficiency, even after long aging. The interest in doping the coinage metal nanoparticles...
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Published in | Applied spectroscopy Vol. 59; no. 2; p. 194 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
United States
01.02.2005
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Subjects | |
Online Access | Get more information |
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Summary: | New surface-enhanced Raman scattering (SERS) substrates, composed of gold or silver colloidal nanoparticles doped with palladium, were prepared. These novel colloids are stable and maintain a satisfactory SERS efficiency, even after long aging. The interest in doping the coinage metal nanoparticles with palladium is due to the well-known catalytic activity of this metal. Transmission electron microscopy (TEM) and ultraviolet-visible absorption spectroscopy were used to characterize the shape and size of the metal particles. It was found that these bimetallic colloidal nanoparticles have a core-shell structure, with gold or silver coated with palladium clusters. |
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ISSN: | 0003-7028 |
DOI: | 10.1366/0003702053085034 |