Center for Advanced Optoelectronic Functional Materials Research, Northeast Normal University, Changchun, PR China.
Colloids Surf B Biointerfaces. 2012 Jun 1;94:157-62. doi: 10.1016/j.colsurfb.2012.01.037. Epub 2012 Feb 1.
A multifunctional ZnO/Ag nanorod arrays has been prepared to construct SERS-active and photocatalytic substrate by a hydrothermal method. The morphology, microstructure and optical properties of ZnO/Ag nanorod arrays are characterized by X-ray diffraction spectra, field emission scanning electron microscopy, energy-dispersive, ultraviolet-visible (UV-vis) absorption and photoluminescence measurement to confirm the successful Ag deposition on the ZnO nanorod arrays. Such arrays exhibit strong and reproducible SERS signals of the Raman probe molecules. The mechanism of SERS enhancement was discussed due to the formation of interfacial electric field between ZnO nanorods and Ag. Furthermore, ZnO/Ag nanorod arrays also show catalytic properties by photocatalytic degradation of target molecules adsorbed to the substrate, which provides promising application for detecting and eliminating organic pollutant.
采用水热法制备了一种多功能 ZnO/Ag 纳米棒阵列，以构建表面增强拉曼散射（SERS）活性和光催化基底。通过 X 射线衍射光谱、场发射扫描电子显微镜、能谱、紫外-可见（UV-vis）吸收和光致发光测量对 ZnO/Ag 纳米棒阵列的形貌、微观结构和光学性能进行了表征，以确认 Ag 成功沉积在 ZnO 纳米棒阵列上。这种阵列表现出拉曼探针分子的强而可重复的 SERS 信号。由于 ZnO 纳米棒和 Ag 之间形成了界面电场，讨论了 SERS 增强的机制。此外，ZnO/Ag 纳米棒阵列还通过光催化降解吸附在基底上的目标分子表现出催化性能，这为检测和消除有机污染物提供了有前景的应用。
