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Surface Enhanced Raman Spectroscopy Using Silver Nanoparticles: The Effects of Particle Size and Halide Ions on Aggregation |
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| Authors: | Garry?P?Glaspell Chen?Zuo |
| Institution: | (1) Department of Chemistry, West Virginia University, Morgantown, WV, 26506;(2) Department of Chemistry & Geochemistry, Colorado School of Mines, Golden, CO, 80401 |
| Abstract: | A surface enhanced Raman spectroscopy (SERS) investigation of the aggregation of silver nanoparticles formed via LVCC with diameters in the range 5–50 nm were studied. It was found that with 647.1 nm excitation maximum enhancement is observed using particles with 11 nm diameters. Upon addition of sodium halides, enhancement is proportional to the polarizability of the anion. Maximum enhancement was observed when the concentration of the anion is approximately equal to the concentration of the adsorbate. |
| Keywords: | SERS silver nanoparticles aggregation halide |
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