| Ag/ZIF-90自组装薄膜的制备及SERS活性研究 |
| Preparation of Ag/ZIF-90 Self-Assembled Membrane and Its High SERS Performance |
|
| 摘要: 合成了金属有机框架化合物沸石咪唑框架-90(ZIF-90)溶胶和ZIF-90晶体薄膜, 分别以这2种材料为基底, 制备出了Ag@ZIF-90复合材料和Ag/ZIF-90自组装薄膜。通过傅里叶变换红外(FT-IR), X射线衍射(XRD), 扫描电子显微镜(SEM)对产物进行表征, 分析了它们的形貌和结构特征。以罗丹明6G(R 6G)作为检测分子, 对所制备材料的表面增强拉曼散射(SERS)性能进行测试。结果表明制备出的Ag/ZIF-90自组装薄膜具有好的SERS性能, 而ZIF-90本身的拉曼峰并不会对Ag/ZIF-90自组装薄膜对目标分子的SERS检测效果产生影响。这种材料可以作为一种良好的SERS检测基底, 在农药残留检测方面具有很好的应用前景。 |
| 关键词: 沸石咪唑框架 Ag@ZIF-90复合材料 Ag/ZIF-90自组装薄膜 表面增强拉曼散射(SERS) |
| 基金项目: 国家自然科学基金(No.21163007, 21165009, 21465011), 江西省主要学科学术和技术带头人计划(No.20133BCB22007)和江西省自然科学 基金(No.20132BAB203012)资助项目。 |
| Abstract: Zeolitic imidazolate framework-90 (ZIF-90) sol-gel and ZIF-90 crystal membrane were prepared. Then silver nanoparticles(Ag NPs) were hosted in the ZIF-90 sol-gel or on the ZIF-90 crystal membrane to form Ag@ZIF-90 composite or Ag/ZIF-90 self-assembled membrane. The Ag@ZIF-90 composite and Ag/ZIF-90 self-assembled membrane were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and scanning electron microscopy (SEM) to show their morphorogies and structural features. Rhodamine 6G (R 6G) was used as a detection molecule to test the surface enhanced Raman scattering (SERS) performance of Ag@ZIF-90 composite and Ag/ZIF-90 self-assembled membrane. The SERS signal of R 6G on Ag/ZIF-90 self-assembled membrane was much higher than that on Ag@ZIF-90 composite and the background peak of ZIF-90 did not affect the SERS detection. The Ag/ZIF-90 self-assembled membrane was a promising active SERS substrate, which can be applied in the trace detection of pesticide residue. |
| Keywords: zeolitic imidazolate frameworks Ag@ZIF-90 composite Ag/ZIF-90 self-assembled membrane surface enhanced Raman scattering (SERS) |
| 投稿时间：2014-08-16 修订日期：2014-11-07 |
| 摘要点击次数: 1814 |
| 全文下载次数: 1786 |
| 郑龙珍,亢晓卫,纪忆,邹志君,王益民,陈计芳.Ag/ZIF-90自组装薄膜的制备及SERS活性研究[J].无机化学学报,2015,31(3):465-471. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
