title: Fabrication and SERS properties of Ag/Cu2S composite micro-nanostructures over Cu foil.
abstract: A new kind of Ag/Cu2S composite micro/nanostructures has been prepared via a convenient galvanic reduction method. SEM images of these micro/nanostructures showed that Ag nanoparticles with the size of around 50-100 nm were well deposited on the surface of Cu2S micro/nanostructures. The SEM images also indicated that the Ag nanoparticles were preferentially grown on the big polygonal Cu2S microstructures, which could be explained by a localization of the electrons on the surface of the polygonal Cu2S microstructures after the electron transfer step. Owing to the introduction of Ag nanoparticles on the surface of Cu2S micro/nanostructures, the resulting Ag/Cu2S composite micro-nanostructures could be used as a versatile substrate for surface enhanced Raman scattering.
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Qianjin Street 2699, Changchun 130012, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Song
authors.forename: Jinjie
authors.initials: J
authors.lastname: Wang
authors.forename: Zhu
authors.initials: Z
authors.lastname: Mao
authors.forename: Weiqing
authors.initials: W
authors.lastname: Xu
authors.forename: Bing
authors.initials: B
authors.lastname: Zhao
mesh_terms: D003300:Copper / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D010084:Oxidation-Reduction; D010316:Particle Size; D012834:Silver / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D013499:Surface Properties
chemical_list: D012834:Silver; D003300:Copper; C017846:cupric sulfide