title: Multifunctional ZnO/Ag nanorod array as highly sensitive substrate for surface enhanced Raman detection.
abstract: 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.
authors.affiliation: Center for Advanced Optoelectronic Functional Materials Research, Northeast Normal University, Changchun, PR China. shangy229@nenu.edu.cn
authors.forename: Guiye
authors.initials: G
authors.lastname: Shan
authors.forename: Shujing
authors.initials: S
authors.lastname: Zheng
authors.forename: Shaopeng
authors.initials: S
authors.lastname: Chen
authors.forename: Yanwei
authors.initials: Y
authors.lastname: Chen
authors.forename: Yichun
authors.initials: Y
authors.lastname: Liu
mesh_terms: D000327:Adsorption; D015374:Biosensing Techniques / Q000379:methods*; D005456:Fluorescent Dyes / Q000737:chemistry; D008027:Light; D008855:Microscopy, Electron, Scanning; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure; D010782:Photolysis; D012834:Silver / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D013499:Surface Properties; D014961:X-Ray Diffraction; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D005456:Fluorescent Dyes; D012834:Silver; D015034:Zinc Oxide