Surface Enhanced Raman Scattering Study of Benzonic Acid by Nano-Sliver-Particles Doped Sol-Gels
碩士 === 逢甲大學 === 光電研究所 === 94 === This thesis deals with SERS(Surface Enhanced Raman Scattering) of benzoic acid(BA) by various amounts of silver particles doped inside the sol-gels which were prepared under various thermal processes, from room temperature up to 60℃、100℃、269℃. All Raman spectra of B...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2006
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| Online Access: | http://ndltd.ncl.edu.tw/handle/37107661954353327202 |
| Summary: | 碩士 === 逢甲大學 === 光電研究所 === 94 === This thesis deals with SERS(Surface Enhanced Raman Scattering) of benzoic acid(BA) by various amounts of silver particles doped inside the sol-gels which were prepared under various thermal processes, from room temperature up to 60℃、100℃、269℃. All Raman spectra of BA’s 1003 cm-1 vibrational mode along with methanol’s 1033 cm-1 vibrational mode were obtained by using the excitation laser light of 488 nm focusing on the Ag-doped sol gels’ inserted in the diluted BA’s methanol solutions at the concentration of 10-2M.
Since only the BA molecules that are approaching the silver nano-particle have the chance to react to SERS effect, the analysis of our Raman spectra can reveal the dependences of SERS on the sol-gels’ local structures and the doping amount of silver. In addition to the heating processes, our results showed that the SERS of this vibrational mode would be affected by the time of exposing to the laser beam due to the local heating effect to the frame of sol-gels, the silver particles and the solutions being studied.
The results of this research can make us further understand how to control the complicated sol-gel reactions and the appropriate Ag doped -concentration which lead to the optimal effect of SERS and will also do good to the study of the Ag-doped-sol-gel as the tool of detecting scarce elements.
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