| 英文摘要 |
In this study, we try to create a novel and sensitive surface-enhanced Raman scattering (SERS) device, composed of wrinkled surfaces with ZnO nanorods doped with Ag nanoparticles, for quick and accurate detection of pesticides and hormones in the environment. SERS has been explored as a powerful technique for tracing and monitoring dynamic molecular processes. A ZnO precursor solutions will be coated onto the PS sheet, followed by hydrothermal method to obtain ZnO rods. After photoreduction method to reduce silver nanoparticles, ZnO nanorods decorated with Ag nanoparticles on a PS sheet will be synthesized. Through further thermal treatment for dynamic thermal contraction process, wrinkled PS with ZnO nanorods doped with Ag nanoparticles should be generated, serving as wrinkled Ag/ZnO SERS-active devices. Combination of electromagnetic enhancement of Ag nanoparticles and charge transfer effect of ZnO, the wrinkled Ag/ZnO SERS-active devices should give good SERS enhancement effect and higher sensitivity. In addition, the 3D wrinkled structure can provide high-density hotspots, compared with 2D thin film structure. It is expected that the wrinkled Ag/ZnO SERS-active devices will possess excellent SERS properies, such as high sensitivity, stability and reusability. |
