| 光谱学与光谱分析 |
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| Electrochemical Character of Gold/Silver Nanoparticles and SERS Studies on Benzidine |
| SUN Ru, GU Ren-ao* |
| College of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006, China |
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Abstract Colloidal gold was prepared by sodium citrate-induced reduction of hydrogen tetrachloroaurate. Colloidal silver was prepared by the reduction of silver nitrate by sodium borohydride respectively. The gold and silver sols were characterized by means of UV-Vis, SEM and CVs. Results show that the gold and silver colloids were a monodisperse suspension with the average size of 16 and 10 nm respectively; Ordered sub-monolayer structure of gold and silver nanoparticles on the ITO was fabricated by self-assembly technique. The CV character of gold and silver nanoparticles features a pair of asymmetrical ox-red peaks separately，moreover, the positions of these peaks are influenced by the concentrations of gold and silver nanoparticles. Ordered double-layer structures of gold/silver nanoparticles on roughened gold substrates were obtained by self-assembly method, where benzidine was used as the coupling molecules. The results of surface-enhanced Raman spectroscopic characterization show that Raman scattering of benzidine molecules during self-assembly is enhanced.
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Received: 2005-08-08
Accepted: 2005-11-16
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Corresponding Authors:
GU Ren-ao
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| Cite this article: |
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SUN Ru,GU Ren-ao. Electrochemical Character of Gold/Silver Nanoparticles and SERS Studies on Benzidine[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(12): 2240-2243.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2006/V26/I12/2240 |
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