Core size matters! High Raman enhancing core tunable Au/Ag bimetallic core-shell nanoparticles
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Date
2017
Authors
Paital, D.
Sen, T.
Patra, A.
Haldar, K.K.
Journal Title
Journal ISSN
Volume Title
Publisher
Springer Verlag
Abstract
Bimetallic core-shell nanostructures have been attracted tremendous attention due to their ability to form novel materials with unique chemical, optical, and physical properties. Here, we have studied the influence of core size of Au/Ag bimetallic core-shell nanostructures on the Raman enhancement efficiency with the Raman-active probe methylene blue. The surface-enhanced Raman scattering intensity is increased with increase in the core size of Au/Ag bimetallic core-shell nanoparticles. Interestingly, the enhancement factor is found to be 6.58?נ107 for the Au100/Ag core-shell nanoparticles and allows easy detection of analyte methylene blue. Thus, surface-enhanced Raman scattering properties of the metal nanoparticles are significantly enhanced due to the Au/Ag core-shell structures and the enhancement factor is dependent on the size of the core of the bimetallic nanoparticles. ? 2017, Springer International Publishing AG.
Description
Keywords
Aromatic compounds, Gold, Image enhancement, Metal nanoparticles, Nanoparticles, Nanostructures, Raman scattering, Surface scattering, Bimetallic, Bimetallic core-shell nanoparticles, Bimetallic nanoparticles, Core shell, Core-shell nanoparticles, Raman, SERS, Surface enhanced Raman Scattering (SERS), Shells (structures)
Citation
Paital, D., Sen, T., Patra, A., & Haldar, K. K. (2017). Core size matters! High Raman enhancing core tunable Au/Ag bimetallic core-shell nanoparticles. Gold Bulletin, 50(4), 313-317. doi: 10.1007/s13404-017-0220-1