| 结晶紫在亚微米棒状ZnO表面增强拉曼光谱的研究 | |
| SERS of Crystal Violet Adsorbed on Submicrometer Rod-Like ZnO | |
| 摘要: 通过湿化学法在70 ℃低温条件下,制备了亚微米棒状ZnO。利用紫外可见吸收光谱(UV-Vis),扫描电镜(SEM),X射线粉末衍射(XRD)以及拉曼光谱对棒状ZnO进行了表征。采用密度泛函(DFT/B3LYP)方法,以6-311G*为基组研究了结晶紫(CV)的理论平衡构型,同时以CV作为探针分子,检测了亚微米棒状ZnO的表面增强拉曼(SERS)活性。结果表明:亚微米棒状ZnO为六方纤锌矿结构,具有很高纯度和结晶度。CV在ZnO表面的拉曼增强因子可达1.2×102,其增强机理主要来源于化学增强。 | |
| 关键词: 表面增强拉曼 棒状氧化锌 结晶紫 密度泛函 | |
| 基金项目: 国家自然科学基金(No.50972059)资助项目。 | |
| Abstract: Submicrometer rod-like ZnO was prepared by wet-chemical technique at 70 ℃. The material was characterized by UV-vis spectroscopy (UV-Vis), scanning electron microscopy (SEM), X-ray diffraction (XRD) and Raman spectroscopy. The optimized geometry of crystal violet (CV) was calculated at DFT/B3LYP level with 6-311G* basis set. Meanwhile, the surface-enhanced Raman scattering (SERS) activity of submicrometer rod-like ZnO was investigated using CV as a probe molecular. Results show that the rod-like submicrometer ZnO has high purity and crystallinity, which belongs to the Wurtzite-type structure. The enhancement factor of CV adsorbed on rod-like ZnO is up to 1.2×102, which is attributed to chemical enhancement. | |
| Keywords: SERS rod-like ZnO crystal violet DFT | |
| 投稿时间：2012-09-21 修订日期：2012-11-13 | |
| 摘要点击次数: 1969 | |
| 全文下载次数: 3185 | |
| 孟卫,张玲艳,江晓红,陆路德,汪信.结晶紫在亚微米棒状ZnO表面增强拉曼光谱的研究[J].无机化学学报,2013,29(3):571-576. | |
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