| 光谱学与光谱分析 |
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| SERS of Positive Silver Colloids with Addition of Aggregating Agent |
| SI Min-zhen1, XU Yuan1, WU Rong-guo2, ZHANG Peng-xiang3 |
1. Department of Physics and Electronic Science, Chuxiong Teacher’s College, Chuxiong 675000, China
2. Chuxiong Environmental Monitoring Station, Chuxiong 675000, China
3. IAMPE Kunming University of Science and Technology, Kunming 651000, China |
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Abstract A very strong surface-enhanced Raman scattering (SERS) spectrum was obtained when adding some aggregating agent such as HNO3 and NaNO3 in positive silver colloid reduced by citrate using 633 nm radiation. In aid of characterizing the SERS of this process, SERS from positive silver colloid with the addition of H2SO3, HCl, and NH3 recorded. It was found that the SERS come from the citrate when adding HNO3, NaNO3 and H2SO3, from NH3 and citrate when adding NH3, and only from Ag—Cl when adding HCl through comparing the spectra. Furthermore, the surface layer of positive silver colloid particles could be Ag+, and the diffusion layer could be citrate.
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Received: 2005-11-16
Accepted: 2006-02-26
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Corresponding Authors:
SI Min-zhen
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| Cite this article: |
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SI Min-zhen,XU Yuan,WU Rong-guo, et al. SERS of Positive Silver Colloids with Addition of Aggregating Agent[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(12): 2251-2253.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2006/V26/I12/2251 |
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